Backend Engineer in London

About BraintrustBraintrust is an innovative AI observability platform that seamlessly integrates evaluations and observability into a unified workflow. By providing developers with enhanced visibility into AI performance in production, Braintrust empowers teams to refine and elevate their AI systems.Our platform is trusted by leading companies such as Notion…

Join Braintrust as the Regional Sales Director for EMEA, where you will drive sales strategies and initiatives across the region. You’ll be responsible for leading a dedicated team, developing key client relationships, and achieving sales targets. Your expertise in sales and leadership will play a vital role in our mission to revolutionize the workforce.

Role overview The Developer Support Engineer at Algolia in London helps developers make the most of Algolia’s products and services. This position involves tackling technical questions, guiding users through integration steps, and helping clients overcome any challenges they face with the platform. What you will do Answer technical questions from developers working with Algolia’s APIs and tools Offer clear, actionable advice on integration and implementation best practices Collaborate directly with clients to troubleshoot and resolve technical issues Share feedback and insights with product teams to help improve the developer experience

About ChalkChalk is revolutionizing the data platform landscape, enabling the next generation of machine learning applications. We dismantle the barriers of complexity, latency, and scalability that have historically limited ML capabilities. Our platform boasts Rust-speed performance paired with intuitive tools that developers adore. Leading organizations trust Chalk to tackle challenges such as preventing fraudulent credit card transactions, authenticating identities, and optimizing clean energy utilization. Recently, we secured a $50 million Series A, spearheaded by Felicis.About the RoleAs a Support Engineer at Chalk, you will serve as our primary technical support specialist, ensuring that customers enjoy outstanding experiences with our innovative products. You will engage directly with clients across diverse sectors including finance, healthcare, and e-commerce, assisting them in troubleshooting and optimizing their utilization of Chalk's platform. This position presents a unique opportunity to gain in-depth knowledge of our technology, collaborate closely with our Engineering and Forward Deployed Engineering teams, and make a significant impact on customer satisfaction and product excellence.Your ResponsibilitiesDeliver front-line technical support to Chalk customers, swiftly diagnosing and resolving technical issues.Work in conjunction with Engineering to escalate and efficiently resolve complex issues.Cultivate comprehensive product knowledge to empower customers to derive maximum value from Chalk.Document solutions, develop knowledge-base articles, and share insights to mitigate future issues.Identify and propose enhancements to product reliability, usability, and customer satisfaction.Qualifications We're SeekingA technical background with experience in technical support or software engineering.Proficiency in Python and SQL.Robust troubleshooting, problem-solving, and analytical capabilities.Exceptional written and verbal communication skills.Ability to collaborate effectively with both technical and non-technical teams.Prior experience in customer-facing technical roles is highly desirable.Bachelor's degree in Computer Science or a related field.

Join isomorphiclabs as a Support Engineer, where you will be integral in providing exceptional technical support to our clients. Your expertise will help ensure a seamless experience for users while troubleshooting and resolving issues efficiently.Your role will involve collaborating with various teams to enhance our product offerings while ensuring high-quality service standards. If you are passionate about technology and customer satisfaction, we invite you to apply!

Role overview Version1 seeks an Onsite IT Support Engineer to join the Services Reliability Group in London. This role acts as the initial contact for IT support, helping users resolve technical problems and stay productive. Collaboration with other IT professionals is central to supporting and improving the company’s IT infrastructure. What you will do Troubleshoot hardware and software issues for users onsite Maintain and support IT equipment throughout the organization Work with various departments to implement IT solutions Provide prompt, effective service to ensure users remain operational Who succeeds here Proactive problem-solvers who address issues quickly People who look for ways to improve IT services Team players who communicate clearly and collaborate with colleagues This position is based onsite in London.

Join our team as a Technical Support Engineer at telefonicatech! As a vital member of our Delivery Operations department, you will provide top-tier technical assistance to our clients, ensuring their satisfaction and the seamless operation of our services.Your role will involve troubleshooting technical issues, guiding clients through solutions, and collaborating with our engineering teams to enhance our product offerings. If you have a passion for technology and a strong problem-solving mindset, we want to hear from you!

Join Wintermute as an Infrastructure Support EngineerAt Wintermute, a leading technology unicorn and one of the largest algorithmic trading firms specializing in digital assets, we are on the lookout for passionate individuals to join our infrastructure team. We provide liquidity across various cryptocurrency exchanges, offer a range of OTC trading solutions, and support esteemed blockchain projects and traditional financial institutions transitioning into the crypto realm. Additionally, our Wintermute Ventures arm invests in promising early-stage DeFi projects.Founded in 2017, Wintermute has successfully navigated through various industry cycles. Our culture merges the rigorous technology standards of high-frequency trading firms with the innovative spirit of technology startups. We are committed to harnessing the potential of blockchain technology and taking a leadership role in building a compliant and innovative digital asset market.Role OverviewAs an Infrastructure Support Engineer, you will play a crucial role within our systems administration group. This primarily technical support position focuses on our mixed environment, integrating both physical and virtual computing resources. Your responsibilities will include providing technical support for our automated desktop setup.We seek responsible and enthusiastic candidates eager to launch or advance their careers in infrastructure. This position offers the chance to collaborate with and learn from our senior technologists, enhancing your automation skills, particularly in Python. As our business evolves, your role will be vital in maintaining our networks and computing environments.Wintermute is dedicated to fostering the growth of your automation capabilities.

Join Our Dynamic Team as a Customer Support Engineer At Contentful, our Customer Support Engineers are crucial in guiding customers through the journey of creating stunning websites, applications, and digital experiences using innovative technologies. You will work closely with developers from various organizations, assisting them in overcoming challenges from scaling their projects to initiating new integrations. Through our ticket-based support system, you will diagnose and delve into Contentful-related issues, providing solutions and escalating critical matters to our Engineering team when necessary. By doing so, you empower our large clientele, who depend on Contentful for their public websites, mobile applications, and other essential business functions, ensuring their success.

Travel Support Engineer (Backend)*Fullstack experience is a plus. London (Hybrid - 2 days onsite) Permanent | Visa sponsorship available | Immediate start Experience: Mid–SeniorTransform travel support with your expertiseAt Duffel, our passion for travel drives us to enhance the experience for every traveler. We understand the challenges faced when systems falter, and we are committed to developing innovative, efficient, and user-friendly support tools.In this position, you won't merely be coding; you'll play a key role in developing our first LLM-powered assistant within our support product. Your efforts will automate repetitive processes, allowing our Travel Operations team to tackle more complex issues, while creating enjoyable tools for travelers and colleagues alike. Each line of code you produce will make a significant difference.Key Responsibilities:• Develop full-stack features using React, TypeScript, Next.js, and Elixir that users engage with daily• Collaborate with designers to craft self-service tools that enhance traveler satisfaction• Integrate internal and external systems to deliver a seamless support experience• Streamline repetitive tasks, empowering your colleagues to focus on uniquely human challenges• Explore AI and automation technologies, contributing to the evolution of real-world applicationsIdeal Candidate:• Prioritizes the user experience over mere functionality• Enjoys simplifying complex challenges into clear, effective solutions• Exhibits curiosity about AI and automation, eager to integrate it into tangible products• Communicates technical concepts in a straightforward manner for broad understanding• Is passionate about delivering an exceptional user experiencePreferred Qualifications: Experience in SaaS/B2B, cloud platforms (GCP, Vertex AI), or familiarity with operational or support tooling.Why Join Us?At Duffel, you'll be part of a team that values meaningful work while fostering a fun environment: Competitive salary and potential equity Work From Anywhere – Choose your work location, locally or globally Duffel Travel Allowance – Experience the product you contribute to Generous parental leave Sabbatical programme – 3 months paid leave to recharge Visa sponsorship available Enjoy a vibrant Shoreditch office with regular team gatherings.

Metaview is a pioneering AI company dedicated to revolutionizing the recruitment process. Our innovative AI agents empower leading organizations to hire with unprecedented speed and accuracy, automating tedious tasks and enhancing human capabilities for clients such as Brex, Affirm, Deel, ElevenLabs, and Airtable.Founded by Siadhal and Shahriar, who gained invaluable experience scaling Uber and Palantir, we have successfully raised over $50 million from top-tier investors, with Google Ventures leading our Series B round. Our growth trajectory is impressive, with a 5x year-over-year increase, and our product has garnered enthusiastic feedback from customers. Our journey has been featured in prominent publications like Fortune, Forbes, TechCrunch, and The Times.As we embark on this exciting journey, we invite individuals who are eager to tackle challenging and rewarding work to join our team.How We OperateAt Metaview, we adhere to a core principle: velocity. This translates into:Optimizing our processes to accelerate learning and growth.Pursuing truly great work.Fostering open and direct communication with complete context.All while maintaining our hard-earned reputation for craftsmanship and quality.The RoleWe are establishing our inaugural dedicated technical support function to ensure our customers receive swift, expert troubleshooting and technical assistance on complex issues as we scale. As a Technical Support Engineer, you will become the authoritative expert on the inner workings of Metaview—analyzing logs, identifying patterns, and transforming unique issues into scalable solutions. You will collaborate closely with our Customer Success, Sales, and Engineering teams, taking ownership of internal tools and processes that enhance the efficiency of troubleshooting and promote self-service capabilities over time.Key Responsibilities Include:Assume full ownership of escalated technical issues, ensuring timely investigation and resolution.Utilize internal logs and tools to diagnose problems, pinpoint root causes, and effectively differentiate between configuration, customer environment, and product-related issues.Design and maintain streamlined internal tools that facilitate efficient troubleshooting processes.

About GigsAt Gigs, we are revolutionizing the mobile services landscape with our innovative operating system—a platform that enables tech companies to seamlessly integrate global connectivity into their products.Similar to how Stripe empowers businesses to implement payment solutions swiftly, Gigs allows platforms to effortlessly incorporate connectivity, bridging the gap between traditional telecom and modern technology. From fintech companies launching mobile services to HR platforms providing work phone plans, we streamline provisioning and simplify the complexities of telecom.Our team, consisting of around 100 talented individuals across the US and Europe, is supported by nearly $100 million in funding from illustrious investors such as Ribbit Capital, Google, and Y Combinator. As one of the fastest-growing tech companies, we attract early-stage engineers, product innovators, and business strategists from renowned organizations like Stripe, Airbnb, and Shopify, all working towards overcoming intricate technical and regulatory challenges to make connectivity truly seamless.If you are passionate about curiosity, creativity, and the opportunity to influence the future of telecom, we invite you to apply!Our Core ValuesWe thrive in a complex environment and are determined to solve significant challenges. We seek individuals who rise to the occasion when difficulties arise.Speed. We operate with agility and meet ambitious deadlines, treating every week as an opportunity.Ownership. If you notice an issue, take the initiative to resolve it. We value proactive problem-solving.Customer Obsession. Our customers’ success is our priority.Ambiguity. We are building pioneering technology in a multifaceted domain, relying on sound judgment and instinct for decision-making.First Principles. We question the status quo and strive to understand the reasoning behind established methods.The RoleAs a Technical Support Engineer, you will be the cornerstone of our technical support operations. Your commitment to excellence will shine through in every interaction—whether assisting business clients or end-users—demonstrating your ability to adapt to diverse perspectives. You won’t merely manage the support queue; you will take full ownership to ensure seamless operations.In this position, you will be the primary escalation point for intricate connectivity issues that challenge our Tier 1 partners, navigating the technical landscape with expertise.

At Acturis, innovation is woven into our very fabric. Since our inception in 2000, founded in the humble garden shed of co-founder Theo Duchen, we have revolutionized insurance technology alongside former McKinsey partner David McDonald. From our startup roots, Acturis has evolved into a global leader in SaaS, reshaping the insurance landscape.Today, more than 100,000 users across 40+ countries trust our platform to enhance their business operations. By collaborating with brokers, insurers, and MGAs, we are continuously redefining modern insurance in both personal and commercial sectors.Recognized as a Great Place to Work® in 2026, Acturis blends the agility and innovative spirit of a startup with the robustness and reliability of an industry leader. Joining our team means becoming part of an environment where expertise is honored, ideas are rapidly implemented, and where talented individuals can make a significant impact from day one. As an EcoVadis Committed rated organization, we are dedicated to creating long-term value through sustainable and responsible practices.Your daily responsibilities will include:• Serving as a senior escalation point for resolving complex L2 issues across laptops, VDIs, servers, and enterprise platforms within a hybrid environment.• Enhancing endpoint management and cloud-integrated services using tools such as M365, Intune, PowerShell, and Atlassian platforms.• Implementing intricate system and infrastructure changes, conducting root cause analyses, and providing mentorship to junior engineers through technical guidance and documentation.We offer well-structured professional development, clear advancement opportunities, and genuine ownership, whether it involves leading projects, driving operational enhancements, or mentoring peers. You'll thrive in a collaborative atmosphere where high achievers progress swiftly.What you can look forward to:• A transparent career advancement structure, regular feedback, and annual performance evaluations.• Opportunities to spearhead cross-functional initiatives, influence tooling and support practices, and assist in the growth of junior team members.• Comprehensive onboarding, ongoing professional development, and access to training and certification pathways.

About the Role Algolia is hiring a Junior Developer Support Engineer in London. This role focuses on helping users solve technical problems and get the most out of Algolia’s products. The position offers hands-on experience supporting customers and a chance to build a foundation in the tech industry. What You Will Do Assist customers with troubleshooting and resolving technical issues Help ensure users have a smooth experience with Algolia’s products Work alongside a team that values learning and growth Who This Role Suits This position is well suited to those starting a career in technology and eager to develop new skills in a collaborative setting.

About BraintrustBraintrust is a cutting-edge AI observability platform that revolutionizes the way builders connect evaluations and observability within a single workflow. By providing unparalleled visibility into AI behavior in production, Braintrust empowers teams with the tools necessary to enhance performance and reliability.Our platform is trusted by leading companies such as Notion, Stripe, Zapier, Vercel, and Ramp, enabling them to compare models, test prompts, and identify regressions — ultimately transforming production data into superior AI with every release.Role OverviewWe are seeking a dynamic Enterprise Account Executive to spearhead our business development efforts across the EMEA region. This role will focus on prospecting and securing new clients, leveraging our existing strong customer base that includes notable names such as Stripe, Notion, Instacart, and Airtable.As our primary users are software engineers, a comfort level in engaging with technical audiences is crucial.Key ResponsibilitiesContribute to the foundational sales team by helping to shape our go-to-market (GTM) strategy and successfully close key customer accounts.Oversee the entire sales cycle, including engaging with prospective clients, negotiating and finalizing contracts, ensuring customer retention, and managing renewals.Navigate complex sales processes and build trust through consultative conversations with technical teams.QualificationsMinimum of 5 years of comprehensive sales experience, particularly selling to technical audiences.A proactive attitude and the ability to delve deep into our product to engage in technical discussions with AI teams.Demonstrated readiness to take initiative and drive significant impact to surpass revenue goals.A strong work ethic, competitive spirit, and the ability to inspire and motivate peers.Experience in fast-paced environments with ambiguous definitions, competing priorities, and tight deadlines.BenefitsComprehensive medical, dental, and vision insuranceDaily lunch, snacks, and beveragesFlexible time off policyCompetitive salary and equity optionsAI Stipend for continuous learning

Join the DeepL TeamDeepL is a pioneering AI product and research company dedicated to creating secure, intelligent solutions for intricate business challenges. Our Language AI platform is trusted by over 200,000 business clients and millions of individuals in 228 markets worldwide, facilitating human-like translations, enhanced writing, and real-time voice translation.Established in 2017 by CEO Jaroslaw "Jarek" Kutylowski, our team has grown to over 1,000 enthusiastic employees, backed by prestigious investors like Benchmark, IVP, and Index Ventures.Our mission is to lead globally in reliable, intelligent AI technology, creating products that enhance communication, foster connections, and make impactful changes. We are on the lookout for talented individuals like you to join us on this exciting journey. If you're eager to influence the future of AI and advance your career in a dynamic, purpose-driven setting, DeepL is where you belong.What Makes Us UniqueAt DeepL, we combine state-of-the-art AI technology with meaningful work and a culture that nurtures personal growth. Our team consists of innovators, researchers, and creators united by a common goal: to empower individuals by making work simpler, smarter, and more connected.Feedback from our employees about working at DeepL is overwhelmingly positive, likely due to our technology that enhances communication for millions or the trust, curiosity, and care that define our culture.Joining DeepL means becoming part of a team committed to innovation, growth, and well-being. Explore more about life at DeepL on our LinkedIn, Instagram, and our Blog.About the RoleWe are seeking a Senior Technical Support Engineer to join our Customer Support team. In this role, you will handle our most intricate support cases related to our API and enterprise products. You will act as the escalation point for issues surrounding authentication, provisioning, integrations, and complex product functionalities. As our enterprise business continues to grow, this role will be vital in bridging customer needs with our Engineering and Product teams.

Join Canonical as a Linux Desktop Support Engineer and elevate your career in a dynamic environment. Based in our London office, you will provide exceptional technical support to both employees and customers, ensuring seamless operation of our systems. Your role encompasses troubleshooting, case management, and delivering AV support for office events. You will own your cases from diagnosis through resolution, collaborating with colleagues and senior engineers when necessary. Come be part of a pioneering company in open-source software, where your passion for Linux and customer success can flourish.

At Acturis, innovation is not just a part of our culture; it is truly embedded in our DNA.Founded in the year 2000 by co-founder Theo Duchen in a humble garden shed, alongside former McKinsey partner David McDonald, we embarked on a mission to revolutionize insurance technology. What began as an audacious start-up has now evolved into a leading global SaaS provider trusted by the industry.Currently, our platform is relied upon by over 100,000 users across more than 40 countries. By closely collaborating with brokers, insurers, and MGAs, we continue to shape the market and set new standards in both personal and commercial lines.Acturis is honored to be recognized as a Great Place to Work® for 2026, maintaining a collaborative and innovative start-up culture even as we expand globally. With over 90% of our new hires coming from graduate backgrounds, we have created an environment where early-career talent can flourish. Additionally, as an EcoVadis Committed-rated organization, we are dedicated to creating long-term value through sustainable and responsible operations.Embark on your career in cloud engineering with a role that offers genuine responsibility, cutting-edge technology, and the opportunity to evolve into a future DevOps specialist.In your daily role, you will:Assist colleagues and clients via our cloud helpdesk, troubleshooting technical issues and conducting root cause analyses.Collaborate with developers to deploy code, manage release environments, and construct tools using various programming languages.Continuously monitor and enhance the health, reliability, and performance of our cloud platform.We provide mentorship from day one, a clear path for progression, and significant responsibilities early in your career, as we have cultivated an environment where graduates accelerate their growth and make a real impact.What you can look forward to:A transparent career structure with regular feedback and three annual performance reviews.Hands-on learning of DevOps practices, scripting, and cloud tooling through real-world projects.Exposure to a large-scale international private cloud supporting thousands of users.

Faculty AI develops artificial intelligence solutions for organizations across government, finance, retail, energy, life sciences, and defense. Since 2014, the team has partnered with over 350 clients worldwide, focusing on responsible AI that delivers measurable results. Learn more about Faculty's impact here. Innovation and practical application guide the work at Faculty. Engineers and scientists are encouraged to challenge assumptions and advance AI technology, building products that make a real difference. Role overview Faculty is seeking Software Engineers in London to help develop Frontier, the company’s main Decision Intelligence AI platform. This position focuses on backend development and cloud infrastructure, supporting the platform’s growth and reliability. Engineers in this role help shape a product designed to bring AI-driven insights to real-world decision-making. What you will do Develop and maintain backend services for the Frontier platform Work on cloud infrastructure to enable scalable AI solutions Apply technical best practices throughout the software development lifecycle Tackle complex, real-world challenges using advanced technology Collaborate with colleagues to deliver AI products that have an impact in sectors like healthcare, logistics, and sustainability Impact areas Optimize hospital bed management with AI-driven tools Streamline logistics for military and public sector organizations Support sustainability projects using data-driven insights This role offers the opportunity to influence how organizations make decisions with AI and machine learning. Faculty values engineers who want to build technology that drives positive change.

Join Bloxd as a Game Engine Developer!We are a thriving video game start-up based in London, boasting a community of 11 million monthly players. We are actively seeking talented engineers to join our founding team of 8.About BloxdAt Bloxd, we revolutionize game development, enabling creators to build editable worlds with just 5 lines of code in under 5 minutes. Experience our innovative games at bloxd.io.Your ProfileYou have a deep passion for gaming and are excited about creating exceptional games that connect millions. With a solid grounding in engineering principles and keen product intuition, you are versatile enough to embrace various roles such as game design, UI/UX, and community engagement. You thrive in rapidly evolving environments, continuously learning from user feedback.Qualifications We Seek1 to 4 years of professional experience in software engineering, game engine development, or related fields, including revenue-generating side projects or internships.Demonstrated experience in developing games or game engines through professional roles or personal projects.Potential Projects in Your First 2 Months:Design and manage your own game.Enhance existing games with innovative gameplay systems.Develop new engine features for fellow game developers.Analyze and optimize performance metrics.Create an in-game item marketplace.Enhance partner integrations (e.g., CrazyGames, Discord Activities).Our Technology StackOur codebase is primarily TypeScript-based, utilizing a blend of React, WebGL, and Node.js. This tech stack enables us to deliver an incredibly accessible gaming experience while ensuring a seamless developer experience. Familiarity with these tools is a plus, but enthusiasm to learn is essential.Employee BenefitsComprehensive Healthcare5% pension matching on qualifying earningsA dedicated workspace in our vibrant office