Software Engineer, Backend (London)

Join Us as a Senior Backend Software EngineerAt Freetrade, our mission is clear: to simplify investment for everyone. Investing shouldn’t be a convoluted or costly endeavor that deters individuals from maximizing their savings. We’re here to change that narrative!As we expand our team, we are searching for passionate individuals eager to redefine how our customers invest and enhance their wealth. If you are motivated by solving intricate problems and crafting innovative products, you will thrive in our environment.With a significant milestone approaching in 2026, following our transformative agreement to join the IG Group, we will continue to operate independently while benefiting from the resources and expertise of a leading player in the industry.This year marks a pivotal moment for us as we accelerate our product roadmap, introducing exciting new features including mutual funds, bonds, and family investment tools. We are also exploring the potential of AI to further enhance our customer experience.Our cloud-native infrastructure relies on Google Cloud Platform tools such as Firestore, Google Kubernetes Engine, PubSub, and Cloud SQL, enabling us to deliver a reliable and efficient platform built with Typescript. Here, your contributions will have a direct and positive impact on both customer experience and our overall business strategy. If you are eager to expand your technical expertise, contribute to new product development, and work in a creative, experimental atmosphere, this role is perfect for you!Why You Should Join Our Engineering Team?Become a vital part of a team that is shaping the future of investment. As a Senior Backend Software Engineer, you will lead the comprehensive development of impactful features, demonstrating your passion for independent problem-solving while scaling our next-generation, user-centric products. Our ideal candidate thrives in a dynamic, fast-paced environment and enjoys crafting innovative solutions.

Join Our Innovative Team at FreetradeAt Freetrade, we're on a mission to simplify investing, making it accessible and affordable for everyone. Our goal is to empower individuals to maximize their savings and grow their wealth.We're building an exceptional team of innovators who are passionate about transforming the investment landscape. If you're someone who thrives on tackling challenging problems and crafting cutting-edge products, you will find your place here.The upcoming year, 2026, promises exciting developments for us. Following our partnership with IG Group, we will continue to operate independently while benefiting from their extensive resources and expertise.This year, we aim to elevate our offerings by introducing new features such as mutual funds, bonds, and family investment tools. We're also exploring the integration of AI to enhance our customer experience further.Why You Should Join Our Engineering Team?Become a crucial part of a team that is redefining the investment future. As a Software Engineer, you will be instrumental in creating and maintaining a robust and scalable platform that serves thousands of users daily. We embrace complex technical challenges, foster innovation, and develop solutions that make a tangible difference. Here, your contributions will influence investment decisions throughout the UK. Join us to transform ideas into reality.We are on the lookout for a talented Mid-Level Software Engineer to join our Backend Engineering team.Our Primary Tech Stack:NodeJS/TypescriptGoogle Cloud PlatformPostgreSQLKey Responsibilities:Deliver high-quality software solutions within set timelines, tackling complex problems by proposing multiple solutions and evaluating trade-offs to assist your team in making sound technical decisions.Address technical challenges by providing scalable and maintainable solutions efficiently, considering trade-offs.Understand the core features and KPIs of your product, collaborating closely with the Product Manager to drive product development.Be prepared for on-call responsibilities, effectively responding to high-priority issues and knowing when to escalate them.About You:You have a solid background in software engineering, with experience in the technologies we use.

Join Freetrade as a Staff Software EngineerAt Freetrade, our mission is to simplify investing, making it accessible and affordable for everyone. We believe that investing should not be a complicated endeavor, and we are dedicated to helping our customers maximize their savings and grow their wealth.As we continue to expand our team, we are looking for passionate individuals who are eager to innovate and transform the investment landscape for our users. If you thrive on tackling challenging problems and developing cutting-edge products, we would love for you to join us.With significant developments on the horizon, including our integration into IG Group, we are excited about the future. This collaboration will allow us to maintain our independence while leveraging the resources of an industry leader.We are rapidly advancing our roadmap, introducing exciting features such as mutual funds, bonds, and family investment tools. Additionally, we are exploring the potential of AI to enhance our customer experience further.Why Become Part of Our Engineering Team?You will be at the forefront of shaping the future of investments. As a Staff Software Engineer, you will be instrumental in designing and maintaining a robust, scalable platform that serves thousands of users daily. We embrace complex technical challenges, foster innovation, and create impactful solutions. Your code will drive the investment decisions of individuals throughout the UK. Join us in turning innovative ideas into reality.

Join Freetrade as a Backend Software EngineerAt Freetrade, we are on a mission to revolutionize the investment landscape, making it accessible and affordable for everyone. Investing shouldn’t be a complicated or costly endeavor, and we are here to change that.As we expand our team, we seek passionate individuals eager to redefine how our users invest and enhance their financial growth. If you thrive on tackling intricate challenges and creating innovative solutions, you will be a perfect fit.2026 marks a significant milestone for us as we progress with our partnership with IG Group, which allows us to operate independently while leveraging the expertise of an established leader in the investment sector.This year, we are fast-tracking our development roadmap, introducing exciting features such as mutual funds, bonds, and family investment tools. We are also delving into the potential of AI to elevate our customer experience.Why Join Our Engineering Team?Become part of a transformative team shaping the future of investments. As a Software Engineer, you will be instrumental in developing and maintaining a robust, scalable platform that serves thousands of users daily. We confront complex technical challenges, foster innovation, and create solutions that genuinely matter. Here, your code powers the decision-making of investors across the UK. Join us to bring ideas to life.We are searching for a skilled Software Engineer to join our Backend Engineering team.Our Core Tech Stack:NodeJS/TypescriptGoogle Cloud PlatformPostgresqlKey ResponsibilitiesDeliver high-quality software solutions within deadlines, addressing complex challenges by evaluating multiple solutions and trade-offs to aid your team in making impactful technical decisions.Effectively tackle technical problems, providing scalable and maintainable solutions while balancing competing demands.Gain a thorough understanding of your product’s core features and KPIs, collaborating closely with the Product Manager to drive development.Be prepared for an on-call environment, addressing high-priority issues and knowing when to escalate as necessary.About YouYou hold a degree in Computer Science or a related field (or equivalent experience).You have a solid understanding of software development principles and practices.You are a proactive problem solver with a strong desire to learn and improve.

About FreetradeAt Freetrade, our vision is to simplify investing and make it accessible to everyone. By removing the complexities and high costs associated with investing, we empower millions to maximize their savings.Join us as we transform the investment landscape!We are expanding our team and seeking individuals who are eager to redefine the investment journey for our customers. If you are passionate about solving intricate problems and developing cutting-edge products, you will thrive in our environment.2026 is set to be a transformative year for us. Following our groundbreaking partnership with IG Group, we will continue as an independent entity while benefiting from the backing of a market leader.This year, we are ramping up our product development, introducing exciting features such as mutual funds, bonds, and family investment tools. We are also investigating how AI can enhance customer experiences.If you want to expand your technical expertise, develop new products, and work in a creative and innovative environment, this is the perfect opportunity for you!Why Join Our Engineering Team?Be part of a team that is revolutionizing the investment sector. As a Mobile Engineer, you will play a crucial role in creating and sustaining a scalable platform utilized by thousands daily. We embrace technical challenges, foster innovation, and provide solutions that truly matter. Here, your code will impact investors across the UK. Join us to turn your ideas into reality.The Freetrade Android application offers customers easy access to various investment opportunities in the UK, US, and EU markets.We are seeking a Mobile Engineer (Android) to join our dynamic team at Freetrade.This role requires a solid understanding of the Android platform, strong problem-solving abilities, and a commitment to skill enhancement while collaborating within a team-oriented environment.This is a unique chance to collaborate with experienced mobile engineers across both iOS and Android, enhancing your skills significantly.As part of our mobile engineering team, you will work on implementing new features while ensuring high customer satisfaction by addressing user queries and feedback. Collaborating with design, product, and QA teams, you will create user experiences that delight our customers.

Freetrade aims to make investing simple and affordable for everyone. Many people find investing complicated or costly, which keeps them from making the most of their savings. Freetrade is working to change that by building accessible tools and experiences. In 2026, Freetrade enters a new phase after announcing a major partnership with IG Group last year. This partnership allows Freetrade to remain independent while benefiting from the backing of a leading financial firm. The team is accelerating its roadmap, launching features like mutual funds, bonds, and family investment tools. AI technologies are also under exploration to improve the customer experience. Staff QA Engineer Role Overview The Staff QA Engineer will help define and carry out the quality strategy for Freetrade's software products. This role centers on building and improving automation frameworks with current tools, aiming for a scalable, multi-layered testing approach that supports the company's growth.

About Freetrade Freetrade aims to make investing accessible and straightforward for everyone. Many people find investing intimidating or costly, and we are working to change that. Our recent partnership with IG Group lets us operate independently, while drawing on the resources of an established industry leader. In 2026, we are accelerating our product development, with plans to launch features like mutual funds, bonds, and family investment tools. We are also exploring ways to use AI to improve our customer experience. Role Overview: Mid-level iOS Engineer We are looking for a Mid-level iOS Mobile Engineer to join our London-based team. The Freetrade iOS app helps users access investment opportunities across the UK, US, and EU markets. As part of our mobile engineering group, you will help build and maintain a platform that thousands rely on daily. What You Will Do Implement new features for the Freetrade iOS app, written entirely in Swift Address user feedback and help resolve queries to improve customer satisfaction Work closely with design, product, and QA teams to deliver engaging user experiences Help prioritize platform issues and manage technical debt Contribute to architectural decisions that support a high-quality application and strong developer experience What We Look For Solid understanding of the iOS platform Strong problem-solving skills Interest in growing technical expertise within a collaborative team Willingness to learn from experienced engineers across iOS and Android Our Tech Stack iOS application built entirely in Swift Location This role is based in London.

About Freetrade Freetrade aims to make investing simple and accessible, helping millions manage and grow their savings. With a focus on affordability and clarity, the team is committed to reshaping how people invest in the UK and beyond. After a recent partnership with IG Group, Freetrade continues to operate independently while benefiting from the backing of an established industry leader. The company is rolling out new features in 2026, including mutual funds, bonds, family investment tools, and exploring AI-driven enhancements to the customer experience. Role Overview: Mid-Level iOS Mobile Engineer This position is based in London and focuses on building and improving the Freetrade iOS app, which gives customers access to investment opportunities across UK, US, and EU markets. The engineering team works on a platform used by thousands every day, tackling technical challenges and delivering solutions that matter. The environment encourages growth, collaboration, and innovation, with opportunities to learn from experienced engineers across both iOS and Android. What You Will Do Develop and implement new features for the Freetrade iOS app. Collaborate closely with design, product, and QA teams to create user experiences that meet customer needs. Respond to customer feedback and queries, helping to maintain high satisfaction. Contribute to prioritizing platform issues, technical debt, and architectural improvements. Support the delivery of a high-quality app and a strong developer experience. What We’re Looking For Solid understanding of the iOS platform and mobile development principles. Strong problem-solving skills and a desire to keep learning. Experience working collaboratively within cross-functional teams. Interest in building products that make a real difference for customers. Why Join Freetrade’s Engineering Team? Work on a scalable, impactful platform used daily by thousands. Be part of a team driving product innovation in the investment space. Grow your skills alongside experienced mobile engineers. Help shape the future of investing for a broad customer base.

Join the Freetrade TeamAt Freetrade, we're on a mission to simplify investing for everyone. For too long, the investment landscape has been overly complicated and costly, preventing many from maximizing their savings. We're here to change that.As we expand our team, we seek passionate individuals eager to transform the way our customers invest and build wealth. If you're driven by solving intricate challenges and crafting innovative solutions, you'll thrive here.With significant developments on the horizon for 2026, including our strategic alignment with the IG Group, we will maintain our independence while harnessing the support and resources of an industry leader.This year, we are ramping up our product roadmap, introducing exciting new features such as mutual funds, bonds, and family investment tools, while also exploring AI enhancements to elevate customer experiences.Why Become a Part of Our Engineering Team?As a vital member of our engineering team, you will contribute to shaping the future of investments. You will be instrumental in developing and sustaining a robust, scalable platform utilized by thousands of users daily. We embrace complex technical challenges, foster innovation, and create solutions that have a tangible impact. Here, your code empowers investors across the UK. Join us and turn visionary ideas into reality.We are actively searching for a talented Software Engineer to join our Backend Engineering squad.Our Core Tech Stack includes: NodeJS/TypescriptGoogle Cloud PlatformPostgreSQLKey Responsibilities:Deliver high-quality software within agreed timelines, tackling complex challenges by offering various solutions and evaluating trade-offs to support your team in making informed technical choices.Address technical challenges by efficiently providing scalable and maintainable solutions while balancing various trade-offs.Grasp the core features and KPIs of your product, collaborating closely with the Product Manager to propel the product’s development.Be prepared for an on-call environment, managing high-priority issues and knowing when to escalate matters.About You:You...

Join Apron as a Senior Software Engineer - BackendAt Apron, our mission is to empower small and medium-sized businesses by ensuring their success. We understand that cash flow challenges often stem from the pressure of demand payments on business owners, which can hinder their ability to meet these obligations.We are bridging this gap by modernizing and simplifying the payment processing experience: from capturing invoices to issuing expense cards, and facilitating transactions—all in one seamless platform.As a rapidly growing company, we have expanded our team to approximately 100 talented individuals across the UK, Germany, Spain, and beyond. Backed by notable investors such as Index Ventures, Bessemer Venture Partners, Zinal Grow, and Tony Fadell, we have successfully raised $50 million to fuel our growth.Our Engineering CultureAt Apron, engineers play a pivotal role in our operations. Here's what you can expect:Customer-Centric Development: We utilize cutting-edge technology to create products that genuinely enhance our customers' lives.Ownership of Projects: From planning to execution, we take full responsibility for our work.Complex Financial Challenges: We embrace the intricacies of finance, navigating complex business logic and ensuring every detail is accounted for. Precision and attention to detail are paramount in creating a reliable product.Pride in Our Code: We prioritize building fast, secure, and scalable code that can grow with us.Integration of AI Tools: We leverage the best available technologies to ensure our product is genuinely beneficial.Your ResponsibilitiesWe are looking to expand our Card team, which has just launched. As a Senior Software Engineer, you will:Collaborate Across Teams: Work closely with Frontend Engineers, Product Managers, and Designers to develop innovative features.Design Robust Systems: Develop core financial integrations to ensure the security of customer funds and expedite transactions.Drive Innovation: Share your expertise with the team to foster innovation and proactively suggest improvements.

Join commercetools as a Senior Backend Engineer, where you will play a pivotal role in shaping innovative backend solutions using TypeScript. Collaborate with cross-functional teams to create scalable and resilient microservices that empower our clients to deliver exceptional digital commerce experiences.

alten seeks a Backend Software Engineer for its Space Department in London. This role centers on developing software solutions that contribute to important projects and advance the team's technology. Role overview The Backend Software Engineer will work on building and maintaining systems that support the department's ongoing initiatives. The position involves collaborating with colleagues to deliver reliable and effective backend solutions. Location This position is based in London.

Join our dynamic team as a Senior Software Engineer specializing in Backend development. In this role, you will collaborate within our autonomous agile teams to craft the services that drive the Blacklane platform. Your contributions will enhance our back-office systems and address integration challenges for our business partners.Our Tech Environment: Our technology stack includes Ruby, Go, TypeScript, and Java, all structured using Domain-Driven Design (DDD). These services are deployed on Kubernetes and communicate via domain events using SQS and Kafka. We utilize a variety of data storage solutions including PostgreSQL, MySQL, Elasticsearch, Redis, and DynamoDB. Our cloud infrastructure is primarily based on AWS, with provisioning managed through Terraform.YOUR CHALLENGE:Address unique challenges to customize our products for specific markets.Maintain high standards through thorough test coverage, documentation, code reviews, and knowledge sharing.Dedicate time to optimizing performance, usability, and maintainability of the systems you oversee.Focus on personal development by acquiring new skills and technologies.Collaborate with a motivated, open-minded team committed to enhancing travel experiences for our guests.ABOUT YOU:You are proactive, curious, and a collaborative team player.You have at least 5 years of experience with two or more programming languages.You are proficient in at least one of the following languages: Ruby or Go.You possess knowledge of the HTTP protocol and have experience with REST APIs.You write high-quality, maintainable code and are familiar with the challenges of distributed systems.You are eager to learn more about event-driven architecture and domain-driven design.You have experience with Docker and containerized environments; knowledge of Kubernetes and Terraform is an advantage.

We are seeking an experienced and passionate Senior Backend Engineer specializing in TypeScript to join our dynamic software engineering team at onrunning. In this pivotal role, you will lead the design and development of robust backend systems that power our innovative applications. You will collaborate closely with cross-functional teams to deliver high-quality solutions that meet the needs of our users. If you have a strong background in backend development, a love for building scalable systems, and a desire to drive technical excellence, we want to hear from you!

About Us: At Breakroom (https://www.breakroom.cc), we are on a mission to create a more equitable world by ensuring every job is a good job. We are developing a community-driven rating system for jobs globally, providing essential information to empower individuals in their career advancements while assisting employers in fostering positive work environments.With over 3 million users comparing their jobs and more than 18,000 employers rated across the UK and the US, we are committed to building an inclusive and top-tier team. We welcome applicants from all backgrounds.Position OverviewAs we prepare to launch Breakroom in the US, we are expanding our engineering and product development team. We seek passionate individuals who want to be part of an early-stage team focused on scaling our operations in a new market. Your responsibilities will include:Designing, writing, deploying, and maintaining high-quality codeCreating internal tools and refining our processesProviding your technical expertise to influence product and team decisionsOur technology stack includes Elixir, using the Phoenix web framework, alongside Postgres, Redis, Google Pub/Sub, and Elasticsearch. While familiarity with Elixir/Phoenix is preferred, we are committed to supporting you in learning these technologies on the job.Work CultureWe adopt a lightweight agile methodology in product development, heavily relying on data for informed decision-making while prioritizing user experiences. Our team thrives on collaboration, working closely with designers, product managers, and fellow engineers. To facilitate this teamwork, we operate from our Spitalfields office in London on Tuesdays and Wednesdays. We release updates multiple times a day and encourage engineers to engage fully in the lifecycle of their projects.Key RequirementsTo excel in this role, you should:Be driven by our mission to create equitable workplacesPossess 5+ years of experience in web software developmentHave in-depth knowledge of backend programming languages, including Elixir, Ruby, Python, or Node.jsHave experience with full-stack web frameworks like Phoenix, Ruby on Rails, or DjangoHave a track record of developing complex features and servicesCommunicate complex technical ideas effectively across diverse teamsHave experience managing operations for high-traffic websitesWork well in cross-functional teamsBe available to support Breakroom during off-hours as neededPreferred Qualifications:Experience working on consumer-facing applications

Join Aircall, a revolutionary unicorn in the AI-powered customer communications sphere, trusted by over 22,000 companies globally to enhance revenue, expedite issue resolution, and empower customer-facing teams. We are transforming the landscape of customer communications by integrating voice, SMS, WhatsApp, and AI into a unified workspace.Our growth is driven by a straightforward principle: to enable teams to work smarter, not harder. Our AI Voice Agent automates routine calls, while AI Assist simplifies post-call tasks, and AI Assist Pro provides real-time insights, allowing individuals to excel in their roles. This synergy results in increased revenue, quicker resolutions, and scalable teams.Headquartered in Paris, with a solid presence in North America anchored in Seattle, Aircall also has teams in vibrant cities such as Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our product is beloved by customers, and we are rapidly scaling, supported by top-tier investors and continuous AI advancements across multiple product lines.At Aircall, you'll become part of a dynamic company. We are ambitious, focused on product development, and execution-oriented, with a clear impact, swift decision-making, and genuine growth opportunities.Our Work Culture at Aircall: We prioritize customer satisfaction, leverage data for decision-making, and are dedicated to delivering significant outcomes. We cherish ownership, continuous improvement, and thoughtful agility. If you thrive in a collaborative, fast-paced environment where trust and impact are essential, you will thrive here.Position Overview:As a Senior Backend Software Engineer, you will take charge of designing, developing, deploying, and maintaining essential features that enhance customer value on our voice platform.You will be expected to advocate for best practices, mentor team members, and contribute to the broader Engineering community as part of your daily responsibilities.Quality, excellence, and agility are at the core of our delivery process, and you will play a pivotal role in elevating these standards.Utilizing a diverse array of backend technologies tailored to specific needs, all hosted on AWS, we create resilient services that deliver added value on top of voice while fully integrating with our customers' critical business tools (CRM, Helpdesk, E-Commerce, etc.).

Join Edra: Pioneering Solutions in Enterprise AIAt Edra, we're tackling one of the most challenging issues in enterprise AI: while AI models are inherently generic, company processes are uniquely specific. Our mission is to develop AI agents that comprehend how these processes operate and effectively manage their tasks.As a Series A startup, we are proudly supported by Sequoia and other prestigious venture capital firms. With our teams expanding in New York and London, we are a highly technical group comprising engineers, AI researchers, and strategists who all uphold a rigorous standard for talent. We believe that exceptional individuals are the cornerstone of our future success.Your RoleWe seek dedicated Backend Engineers who are passionate about the art of software development. Your focus will be on implementing strong typing, thoughtful API design, and robust data modeling. You will not be developing AI models; instead, you will construct the surrounding ecosystem: the platform, workflows, interfaces, integrations, and observability that render our AI applicable in real-world scenarios. As one of the early engineers at Edra, you will have the opportunity to influence not only the product but also the engineering culture, tooling decisions, and technical frameworks upon which our company is built.Our approach is intentional and thorough. There is no distinction between 'building it' and 'shipping it'—you will oversee the journey from conceptualization to deployment, taking full ownership of your outcomes. We prioritize thoughtful development over speed, striving for a balance between velocity and quality.Key ResponsibilitiesDesign and implement platform systems utilizing Python (FastAPI), including API contracts, database schemas, and infrastructureDevelop and sustain connectors, integrations, and data pipelines that link our platform to external systemsCreate internal libraries, tools, and interfaces that enhance the productivity of the engineering teamTake full ownership of your work by gathering context, managing dependencies, and driving tasks to completion independentlyEngage in multiple roles across the stack—design a schema in the morning, develop the API layer in the afternoon, and troubleshoot a deployment issue by day’s endParticipate in weekly product meetings, understand user interactions with your creations, and help shape future developmentsCollaborate daily with a small, elite team of engineers and AI specialistsHave a direct impact on the technical direction: select tools, establish patterns, and define conventions for the team

About Freetrade Freetrade aims to make investing accessible and affordable for everyone. The company continues to operate independently after joining IG Group, with a focus on expanding its product lineup and improving the investment experience for customers. Current projects include adding features like mutual funds, bonds, family investment tools, and exploring new technologies to enhance the platform. Role Overview The Quality Assurance Engineer will help ensure the reliability of Freetrade’s software products. This role centers on designing and running automated tests, especially for end-to-end platform coverage and stable releases. The position is based in London. Main Responsibilities Design and integrate automated tests into the CI/CD pipeline for functional, integration, and regression coverage. Develop and maintain automated test scripts for both web and mobile applications. Identify, analyze, and document defects, functional discrepancies, UI issues, and data inconsistencies with attention to detail. Work with cross-functional teams to share feedback from testing and support product quality improvements. Contribute to the team’s knowledge base and promote quality-focused practices. What We’re Looking For Experience implementing testing strategies, creating test cases, and evaluating results to support production readiness. Background in functional testing across the stack, including integration, UI, regression, and REST/GraphQL API testing. Comfortable maintaining and expanding automated test suites with tools such as Playwright, Appium, and Browserstack. Ability to write clear, maintainable test code and validation scripts.

Role overview airapps is hiring a Backend Engineer for its London Metropolitan Area team. This role focuses on designing and building scalable server-side applications that support the company’s products and services. What you will do Work closely with colleagues across different functions to develop backend systems Contribute to the architecture and implementation of server-side features Help ensure backend solutions can scale and perform reliably Location This position is based in the London Metropolitan Area.