Software Engineer, Back End Leaning (Tech Lead Level)

At Synthesia, we are redefining the future of communication through our leading AI video platform, embraced by over 90% of Fortune 100 companies. Established in 2017 and headquartered in London, our presence spans across Europe and the United States, with a diverse team dedicated to innovation.As the AI landscape evolves, we are committed to enhancing visual communication and fostering enterprise skill development, ensuring that individuals are empowered to excel and remain integral to the success of their organizations.After a successful Series E funding round that secured $200 million, our valuation has reached $4 billion, with total funding exceeding $530 million from esteemed investors like Accel, NVentures (Nvidia's venture capital), Kleiner Perkins, GV, and Evantic Capital, as well as founders and executives from Stripe, Datadog, Miro, and Webflow.About the RoleYou will take on an end-to-end role, contributing to our client application built in React and our robust monolithic backend developed in Python, while ensuring secure feature releases to our customer base.You will own long-term projects that require breaking down complex challenges into manageable, iterative steps for delivery and validation.Collaboration with the product manager will be key, allowing you to ideate solutions focused on commercial problems and shape product direction.Your work will be evaluated through established data pipelines and frameworks to assess the impact of your features on our business objectives, enabling you to pivot as needed.You will also be tasked with considering the team's long-term direction, ensuring we build the engineering capabilities necessary to tackle future challenges over the next 6-12 months. What We're Looking For:A minimum of seven (7) years of experience in software engineering, with at least 3 years in a senior or lead role.Experience in a high-performing engineering team, whether in a scale-up environment or an established organization recognized for its outstanding engineering culture.Strong capability across the tech stack, with in-depth knowledge of server-side development and backend technologies. Backend-focused experience is acceptable if you're willing to assist on the frontend occasionally.Proficiency in relevant engineering practices and tools that enhance productivity and performance.

Join Synthesia, the premier AI video platform revolutionizing business communication, trusted by over 90% of Fortune 100 companies. Since our inception in 2017, we've grown into a global leader, headquartered in London with teams across Europe and the US.As AI continues to redefine our professional landscape, Synthesia is at the forefront, crafting innovative products that enhance visual communication and foster enterprise skill development, empowering individuals to excel within their organizations.Following our successful Series E funding round, securing $200 million, we are now valued at an impressive $4 billion, with total funding exceeding $530 million from top-tier investors, including Accel, NVentures (the venture arm of Nvidia), Kleiner Perkins, GV, and Evantic Capital, alongside founders and operators from Stripe, Datadog, Miro, and Webflow.About the RoleIn this role, you will engage in end-to-end development, contributing to our client application built in React and our monolithic backend in Python, ensuring the seamless and safe deployment of your features to our user base.You will take full ownership of long-term projects, adeptly breaking down complex challenges into manageable steps that can be iteratively delivered and validated.You will collaborate directly with the product manager to brainstorm and focus on the commercial challenges you are addressing, giving you a significant role in shaping the product's trajectory.Utilizing our established data pipeline and frameworks, you will assess the impact of your work on our business objectives and adjust your approach as necessary.You will contribute to the long-term strategy of the team, ensuring we develop the engineering capabilities required to tackle future challenges over the next 6-12 months.

Back End Engineer - New VenturesJoin us in a hybrid capacity at iwoca, located in London, United Kingdom (minimum one day in the office per week).About the Role:As a Back End Engineer on the Credit Compass team, you will play a pivotal role in designing and developing scalable, high-performance services that enhance small businesses' understanding of their credit health. You will work with rich data sources, including Open Banking and credit reports, to provide actionable insights that empower business owners.About iwoca:At iwoca, we recognize that small businesses need fast and flexible finance solutions. Our cutting-edge technology, data science, and exceptional customer service have already aided over 100,000 businesses with more than £4 billion in funding. We are on a mission to empower one million SMEs with the financial tools they need to thrive, making a lasting impact on the communities they serve.The Team:Join a dynamic and collaborative Credit Compass team dedicated to transforming complex financial data into clear, actionable insights. Our cross-functional group of engineers, product managers, designers, and analysts work closely to deliver outstanding features that enhance our customers' experience.

Fraud Alert:Beware of scammers creating fake job listings on other platforms. To ensure your application is considered, please submit your application exclusively through Sensor Tower's official website or through postings directly associated with Sensor Tower on platforms like LinkedIn, Indeed, BuiltIn, or Hackajob. Sensor Tower will never request payment, credit card, or bank account details as part of the application process. All official communications from Sensor Tower will come from email addresses ending in sensortower.com. Interviews will be conducted via phone or Zoom, and we will not transition to other email services or texts. If you encounter any issues, please reach out to us. Remember to attach your resume when applying.Notice to Recruitment Agencies:Sensor Tower does not accept unsolicited resumes from third-party agencies. Please refrain from sending resumes to our job alias, Sensor Tower employees, or any other company location. We will not be liable for any fees related to unsolicited resumes and will not pay any agency or company without a signed agreement.About This Role:Are you passionate about developing products that leverage real-world, large-scale data? At Sensor Tower, we process vast amounts of data to provide insights for thousands of customers. We are seeking enthusiastic, early-career engineers eager to enhance their skills while collaborating with us to create fast, reliable systems that simplify data access and understanding.You will collaborate closely with seasoned engineers, contribute to impactful features from day one, and gain insights into the design, construction, and optimization of large-scale systems in a production environment.If you thrive on learning, problem-solving, and delivering real software that users depend on, we would love to hear from you. We have a strong history of rapidly advancing talented juniors, and this position offers a unique opportunity to work closely with senior leadership.Our Engineering Culture:We believe that "Simplicity is a prerequisite for reliability." We seek engineers who resonate with our core values:- Simplicity: We avoid unnecessary complexity, favoring existing tools and straightforward solutions over trendy new technologies.- Quality: We write code that is enjoyable to read, understanding that code is often read more than it is written. We do not cut corners and strive for high standards before deployment.

Senior Back End Engineer - German MarketJoin us in a hybrid role based in London or work remotely from anywhere in the UK.About the RoleWe are seeking a skilled Senior Back End Engineer to develop and enhance the systems that drive iwoca's operations in the German market. You will collaborate within a dynamic, cross-functional engineering team tasked with building proprietary tools such as our CRM system, utilized daily by our German operations team. You will spearhead significant projects from inception to delivery, leveraging your technical expertise to enhance our services for small businesses while fostering the growth of the overall engineering team.Company OverviewAt iwoca, we understand the fast-paced world of small businesses. Opportunities can arise unexpectedly, and cash flow challenges can emerge overnight. That's why we offer flexible and responsive financial solutions tailored to the needs of SMEs. Our advanced technology, data science, and exceptional customer service empower business owners to act swiftly and confidently when it matters most. With over 100,000 businesses supported and more than £4 billion in funding provided, our dedicated team is on a mission to help one million SMEs thrive, making a lasting impact on their communities and economies.The TeamOur DE Tech team is an expanding group of engineers divided into three cross-functional teams. Together, we build and maintain essential systems—including underwriting, notifications, and account management tools—that empower over 300 colleagues in sales, credit, and collections. As our German business scales, these teams are innovating beyond incremental improvements to fundamentally enhance operational workflows, ensuring that we can respond quickly and reliably to the needs of our customers.Your ContributionsIn this role, you will engineer systems vital to both internal and external teams in delivering outstanding customer service. You will oversee engineering processes from problem identification to implementation, witnessing the direct impact of your work in everyday applications. Your designs will underpin back-end services that facilitate core operational tasks, including customer communications and underwriting.

Join CUR8 as a Back-end EngineerAt CUR8, we are on a transformative mission to reshape the carbon removal landscape. With the pressing need to eliminate 5-10 Gigatonnes of CO₂ by 2050, our innovative platform empowers organizations worldwide to meet their carbon neutrality goals.As part of our dedicated Risk Engine squad, you will play a pivotal role in evaluating and refining high-quality carbon removal projects, ensuring our clients have access to reliable insights and data.Your collaboration with our Lead Software Engineer, Senior AI Engineer, and scientists will be vital in converting scientific criteria into robust, scalable software solutions.Key ResponsibilitiesDevelop Application Logic: Craft the code that manages data flow, from document ingestion to model result handling.Translate Science into Code: Work closely with Carbon Scientists to understand project criteria and develop corresponding code logic.Manage Unstructured Data: Create systems that can transform complex real-world inputs into structured, actionable data.Deliver Insights: Design APIs and data structures that present findings to customers in an intuitive user interface.Our Technology StackCore Back-end: GoData Stack: PythonDatabase: PostgreSQLInfrastructure: Google Cloud Platform, TerraformAI Tools: Claude, Gemini, GPTWhile expertise in both Go and Python is not essential, a willingness to engage with both is necessary.Your Technical ExpertiseExperience: A minimum of 2 years in building and maintaining backend software.Language Proficiency: Comfortable with a statically typed language (preferably Go).

About Marcura:Marcura stands at the forefront of maritime technology and operations, playing a pivotal role in facilitating nearly one-third of the global seaborne commodity trade. Our innovative platforms, which encompass software solutions, data intelligence, and payment processing, are integral to the digital transformation journey within the maritime sector. We are currently on the lookout for a Senior Back-End Software Engineer to join our dynamic and impactful team, contributing to the success of one of the industry's most innovative organizations.Role Overview:In the position of Senior Back-End Software Engineer, you will take charge of the architecture, design, development, and testing of scalable Compliance and RegTech solutions. Your mission will be to construct and maintain secure, high-performance applications utilizing Django REST Framework and Python (backend) to enhance counterparty onboarding, risk assessment, and regulatory screening processes.Your responsibilities will include overseeing code and tests to ensure the robustness of APIs, seamless integrations, and adherence to industry standards such as GDPR and ISO 27001. You will champion secure coding practices, implement embedded testing (shift-left), and drive automation efforts, collaborating closely with product managers, UX designers, and compliance specialists to ensure alignment between technology and business objectives. Staying abreast of industry trends, you will introduce innovative solutions in full-stack development, AI, and compliance automation.Key Responsibilities:Develop and manage APIs that facilitate onboarding, screening, and entity intelligence, ensuring optimal performance, version management, and traceability.Enhance product capabilities by integrating new data-driven features (such as search, risk scoring, relationship mapping) while maintaining system stability.Incorporate ElasticSearch for superior query performance and analytics on a large scale.Collaborate with data and other platforms/services to support risk assessment and compliance automation.Work in close partnership with product teams, UX designers, and compliance experts to ensure technical solutions align with business strategies.Adopt a shift-left testing methodology, embedding unit, integration, and end-to-end tests within the development lifecycle, minimizing dependence on external QA resources.Implement industry best practices for secure coding, data privacy (GDPR), and compliance automation, ensuring regulatory adherence.Ensure security, scalability, and maintainability of full-stack applications.Establish best practices for data modeling, ETL processes, and regulatory compliance (GDPR, ISO 27001) in data-centric applications to guarantee data integrity, consistency, and security.Stay updated on emerging technologies in full-stack development, AI, and compliance automation, proposing innovative ideas to elevate products and processes.

Fraud Alert:At Sensor Tower, we prioritize your safety during the application process. To be considered for a position, please apply exclusively through our official website or directly through recognized platforms like LinkedIn, Indeed, BuiltIn, or Hackajob. We will never request payment or sensitive information such as credit card or bank details for job applications. All communications from us will originate from email addresses ending with sensortower.com. Interviews will be conducted via phone or Zoom, and no communication will occur through unverified email or text. If you encounter any suspicious activity, please let us know. Remember to attach your resume when applying.Recruitment Agency Notice:Sensor Tower does not accept unsolicited resumes from third-party recruitment agencies. Please refrain from sending resumes to our job alias, employees, or any other company locations. Sensor Tower will not be liable for any fees related to unsolicited resumes and will only pay agencies with a signed agreement.Role Overview:We are on the lookout for a talented Back End Engineer to join our team. You will play a crucial role in scaling our database operations and managing vast amounts of data (up to tens of terabytes). Your creativity and technical skills will be essential in deriving valuable insights and data.As a member of the Sensor Tower engineering team, you will contribute to developing top-notch products and features that enhance our user experience. In our agile and flat organizational structure, your input will directly influence the direction and execution of our projects.A Day in the Life:Interviewee: Engineering Team Lead - Sasha YelkovenkaDescribe a typical day as a Software Engineer.My role involves working extensively with large datasets, which are continuously growing. My primary responsibility is ensuring our customers can access this data swiftly and providing them with user-friendly tools for data utilization. I appreciate the culture of ownership at Sensor Tower.How do you collaborate with your remote team?We foster an excellent remote work environment, frequently collaborating via Zoom to leverage each other's expertise for improved outcomes.

At Solve Intelligence, we are not merely developing features; we are shaping the foundational infrastructure that aims to revolutionize the global legal and IP landscape. The Role: Full-Stack Engineer (Back-End Focus)We seek an exceptionally skilled engineer to assist in the rapid development of both the front-end and back-end of our innovative products. You will join a lean, highly talented engineering team based in London.Key Responsibilities:Foundation Scaling: Design and construct robust and scalable backend systems from the ground up to cater to a vast global market.User-Centric UI: Collaborate on planning and refining our React-based front-end to ensure our sophisticated AI systems are user-friendly and widely embraced.Product Development: Work alongside the founders to derive insights from customer feedback and translate them into actionable technical solutions.Culture Building: Contribute to establishing the engineering culture and play a critical role in building a top-tier technical team. About Solve IntelligenceWe are a rapidly growing startup redefining how IP professionals operate.Growth: Enjoying a 20-30% month-over-month revenue increase while serving over 100 IP teams (ranging from DLA Piper to premier tech boutiques).Proven Efficiency: Users report efficiency improvements ranging from 50-90%.Investment: Recently highlighted in Sifted following our $40M Series B funding round, bringing our total funding to $55M from notable investors including Y Combinator, 20VC, Visionaries, and others. Your TeamYou will collaborate directly with a founding team comprising AI PhDs and systems specialists:

About Methods Business and Digital Technology Limited Methods Business and Digital Technology Limited is an established IT services consultancy based in the UK, with more than 30 years of experience. The company works closely with central government departments and agencies to improve public sector operations. With annual revenue exceeding £100M, Methods is known for delivering business and technical solutions that focus on people, safety, and long-term readiness. Methods takes a human-centric approach, aiming to create value and sustainability for clients, employees, communities, and the environment. The company emphasizes collaboration, continuous improvement, and a culture where people enjoy their work while striving for excellence. While Methods primarily serves the public sector, it is also building a private sector client base. Since joining the Alten Group in early 2022, the company has continued to grow and innovate. Role Overview: Senior Java Back-End Developer This London-based position focuses on back-end Java development within a team that supports both public and private sector clients. The role involves contributing technical expertise, collaborating with colleagues and clients, and helping deliver solutions that meet high standards for quality and safety.

Kaluza is looking for a Software Engineer II with a focus on front end development. This role is available in Bristol, Edinburgh, or London. Key responsibilities Collaborate with cross-functional teams to design and build features for Kaluza’s platforms. Develop responsive, high-performing user interfaces. Contribute to scalable applications that enhance the user experience. Work locations Bristol, England, United Kingdom Edinburgh, Scotland, United Kingdom London, England, United Kingdom

Join Synthesia, the preeminent AI video platform revolutionizing business communication, utilized by over 90% of Fortune 100 companies. Established in 2017 and headquartered in London, we have expanded our footprint with teams across Europe and the US.As AI continues to reshape our daily lives and work environments, Synthesia is at the forefront, developing innovative products that elevate visual communication and enhance enterprise skill development. Our mission is to empower individuals and organizations to thrive in a dynamic world.With our recent Series E funding of $200 million, our valuation has soared to $4 billion, bringing our total funding to over $530 million from esteemed investors, including Accel, NVentures (Nvidia’s VC arm), Kleiner Perkins, GV, and Evantic Capital, alongside the founders of Stripe, Datadog, Miro, and Webflow.Role OverviewAs a key member of our Video Platform team, you will be instrumental in building and optimizing the critical infrastructure that drives Synthesia's video generation capabilities.Your primary focus will be on enhancing the resilience and scalability of our video generation pipeline.You will develop comprehensive monitoring and debugging tools to ensure the seamless performance of our video pipeline.Owning projects of significant duration, you will break down complex problems into manageable steps for iterative delivery and validation.You will assess your contributions, utilizing our established data pipeline and frameworks to evaluate the impact of your features on our commercial goals, adapting strategies as needed.You will contribute to the long-term vision of the team, ensuring we cultivate the engineering capabilities necessary to navigate anticipated challenges over the next 6-12 months.

Join our dynamic team at Faculty as a Lead Software Engineer, where you will spearhead innovative projects and mentor a talented group of developers. You will play a vital role in shaping our software solutions while collaborating with cross-functional teams to deliver high-quality products. Your leadership will help drive our mission to revolutionize the tech landscape.

Join Faculty: Pioneering AI InnovationFounded in 2014, Faculty believes that artificial intelligence (AI) is the transformative technology of our era. We have partnered with over 350 global customers, driving performance improvements through human-centric AI solutions. Discover our impactful projects here.At Faculty, we prioritize innovation over trends. Our mission is to develop and implement responsible AI that truly makes a difference. Our team brings unmatched expertise in technology, product development, and delivery to various sectors, including government, finance, retail, energy, life sciences, and defense.As our reputation grows, we seek individuals who share our curiosity and commitment to creating a lasting positive impact through technology.AI is a game-changing technology. Join us to explore its most powerful applications and bring them to life.Role OverviewAs a Lead Software Engineer within our Customer Development team, you will not only develop software but also spearhead the deployment, customization, and scaling of our innovative Frontier platform for enterprise clients.As we broaden the reach of our platform, you'll have the distinct opportunity to create a scalable AI-focused product while remaining attuned to real-time customer feedback and setting the standard for technical excellence.This role immerses you in the deployment of Frontier in complex environments, addressing real-world challenges with cutting-edge technology. Your work will optimize multinational supply chain logistics, expedite clinical trial timelines, and support sustainability initiatives, enabling organizations to make informed decisions through AI-enhanced insights.Embark on this thrilling journey of transforming decision-making with AI and machine learning, revolutionizing business success through Decision Intelligence.

About Clear Street:At Clear Street, our mission is to empower sophisticated investors with seamless access to every asset across various markets, all through a unified platform designed for speed, transparency, and scalability.We equip our clients with cutting-edge technology, tools, and services that were once exclusive to the largest financial institutions, all rebuilt on modern infrastructure. Our cloud-native, end-to-end capital markets platform not only supports investor growth today but is also revolutionizing their interactions with markets for the future.Discover more at https://clearstreet.io. The Role:As a Senior Front-end Software Engineer, you will play a pivotal role in developing our flagship product, Clear Street Studio, offering a state-of-the-art prime brokerage experience. You will confront challenging problems that require careful trade-offs to deliver clean and efficient solutions. Your expertise will elevate our standards in providing exceptional solutions that enhance user experience and maintain high service level agreements (SLAs).This position is integral to engineering the next iteration of our advanced Studio (portal) tailored for a diverse clientele, including hedge funds, traders, and portfolio managers.

About EdraAt Edra, we tackle one of the most complex challenges in enterprise AI: while AI models are broadly applicable, company processes are uniquely tailored. Our innovative AI agents learn the intricacies of these processes and optimize their operations accordingly.As a Series A startup backed by Sequoia and other top venture capital firms, we're rapidly expanding our teams in New York and London. Our engineering team consists of highly skilled engineers, AI researchers, and strategic thinkers who share the conviction that extraordinary talent is the cornerstone of groundbreaking innovations.The RoleWe are on the lookout for Product Engineers who are passionate about the art of software development. Ideal candidates will excel in strong typing, thoughtful API design, and robust data modeling, ensuring our systems are enjoyable for other engineers to engage with. As an early member of the engineering team at Edra, you will not only influence product development but also help shape our engineering culture, tooling, and foundational technologies.Our approach is both intentional and thorough. We believe there should be no divide between building and shipping; you will transition from the drawing board to production and assume full responsibility for the results. We prioritize crafting robust solutions over hastily delivering fragile outputs, and we view speed and quality as mutually reinforcing, rather than opposing factors.What You'll DoDevelop high-quality user-facing product experiences primarily using TypeScript and React.Engage in frontend architecture decision-making.Collaborate closely with design teams to contribute to product direction and design, articulating clear rationale behind interface decisions.Take ownership of your projects: gather context, manage dependencies, and drive tasks to completion autonomously.Adapt to various roles as necessary, whether building a component library, collaborating with designers, or debugging issues at the API level.Work collaboratively within a cross-functional team of engineers and AI specialists.Shape the technical direction by selecting tools, establishing patterns, and setting conventions that the team will rely on for years to come.Commit to continuous personal growth and knowledge sharing within the team.While primarily focused on frontend development, a solid understanding of backend systems will be necessary for troubleshooting.

Join a Transformative OrganizationAt Palantir, we create groundbreaking software that revolutionizes data-driven decision-making and operations. Our platforms empower partners to develop life-saving medications, anticipate supply chain disruptions, locate missing children, and much more by delivering crucial data to those who need it most.About the RolePalantir Foundry is an all-encompassing platform designed for data-driven decision-making. We are redefining how organizations securely integrate their data, enabling them to construct reliable and essential applications on a unified foundation. Our clients utilize Foundry to conduct in-depth analyses that drive core operational strategies. They can also develop sophisticated applications such as operational dashboards, alert management systems, and resource allocation tools powered by advanced machine learning models.As a Senior Front End Software Engineer specializing in application development for Foundry, you will play a key role in designing the tools employed by thousands of users to create the advanced applications that fuel their businesses. Your responsibilities will include architecting and developing user interfaces, managing state, and implementing access patterns to facilitate data-intensive workflows that are both powerful and user-friendly. One day, you may engage with users to gain insights into their needs and pinpoint product enhancements; the next, you could collaborate with your teammates to address intricate UX challenges by integrating customer feedback and insights from various industries.You will routinely tackle complex technical challenges that require you to outline solution designs and identify incremental steps for delivering new features. This includes owning the APIs and schemas that underpin your frontend code and collaborating with backend engineers to develop them.We seek engineers who are dedicated to solving real-world issues and enabling both developers and end-users to achieve optimal results. If you are passionate about creating reliable, high-performance, and scalable systems, as well as designing robust APIs and primitives, this role offers a unique opportunity to significantly influence our products and the individuals who utilize them.Frontline OpportunityFoundry Software Engineers may have the chance to participate in Frontline, a distinctive program that offers a short-term assignment with customers. This immersive experience allows you to work directly with users, gaining valuable insights into how our products are applied and the challenges faced by our clients. Unlike traditional engineering roles, Frontline exposes you to complex, ambiguous problems, empowering you to innovate solutions that directly enhance user experiences.

We are seeking a dynamic and experienced Engineering Lead to join our innovative team at dev2. In this pivotal role, you will spearhead engineering projects, mentor a talented group of engineers, and collaborate with cross-functional teams to drive the success of our cutting-edge solutions.The ideal candidate will possess a proven track record in engineering leadership, demonstrating both technical expertise and a passion for fostering a collaborative team environment. You will play a crucial role in shaping our engineering practices and ensuring the delivery of high-quality products.

About Blockchain.com Blockchain.com connects people to the world of cryptocurrency. Since 2011, the company has supported over 90 million wallet holders and more than 40 million verified users, processing more than $1 trillion in transactions. Role Overview The Institutional team at Blockchain.com is looking for a Front-End Engineer based in London. This group focuses on building tools and experiences for institutional clients in the crypto space. What You Will Do Collaborate with colleagues to deliver front-end solutions for institutional products Contribute to a culture that values courage, productivity, and continuous improvement Work to optimize processes and deliver results that matter Grow your skills by learning from others and sharing knowledge What We Look For Strong interest in front-end engineering and digital assets Team player who values collaboration and learning Commitment to high standards and impactful work Based in London or willing to work from the London office

Join us at Magentic as a Front-end Product Engineer and play a pivotal role in revolutionizing how professionals at leading global companies utilize AI in their everyday tasks. Here, you will have the opportunity to influence the core product experience for enterprise users as they collaborate with advanced AI agents to achieve unprecedented outcomes.If you are passionate about exploring the latest advancements in human-computer interaction, this is the place for you.We are at the forefront of AI innovation, developing next-generation agentic systems capable of managing comprehensive procurement workflows. Our mission is to fortify global manufacturing supply chains, tapping into a $3 trillion market opportunity.Excitingly, we are backed by renowned investors including Sequoia Capital, and you will be collaborating with a remarkably talented team comprised of experts from OpenAI, Meta, Revolut, NASA, and McKinsey.