Jobs in United Kingdom

Lead Senior Full Stack Software Engineer 2c Api Experience in United Kingdom

194 active opportunities · Updated October 2026

Explore current lead senior full stack software engineer 2c api experience jobs across United Kingdom. Filter by work mode, employment type, experience, department, date posted and distance.

Hiring demand

56/100

steady · 42 related jobs

Hiring trend

-76.5%

Job postings compared with the previous 30 days

Remote options

7.1%

Share of matching jobs listed as remote

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📍 United Kingdom· Full-time
✓ High-confidence listingCompany trend -100%

From £120K/yr

Quick readStrong listing-quality and freshness signals

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: We are building tools and a global community to make it easier for people to host on Airbnb. Our team focuses on co-hosting and building intuitive, user-facing experiences that enable people to host together as a team, using machine learning where appropriate to address real user needs. The team works collaboratively with cross-functional partners in Design, Product Management, Business and other Engineering teams to quickly brainstorm, prototype, develop, and deliver high quality product experiences. The Difference You Will Make: As the Engineering Manager, within Guest & Host Services, you’ll lead a team of talented, diverse software developers to prototype, build and improve hosting services, balancing the shorter term business outcomes along with longer term technical stability, scalability and flexibility aligning with cross functional partners. A Typical Day: Explore, shape, and develop new product experiences alongside cross-functional partners (design and product); from ideation to implementation at scale Lead investments into new technical capabilities that push the envelope and unlock product innovation Collaborate with engineers to plan and sequence the delivery of new features and capabilities, making necessary trade-offs, while effectively communicating the delivery plans and celebrating successful launches Partner with peer engineering teams to integrate new features that impact different areas within the product Strengthen the team’s partnerships with key stakeholders in Engineering, Design, and Product to make ambitious product feature concepts a reality. R

Machine LearningAIGo
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📍 United Kingdom· Full-time
✓ Quality checkedCompany trend -100%

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies—from the world's largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. About the team The Direct Surfaces Team's mission is to make it delightful for users to manage their money. We're rebuilding and unbundling the core of Stripe so that no matter what the business, the location, or the use case there is a single place that can fulfill all financial needs: Stripe Treasury. This is a 0 → 1 new business at Stripe, so if that sounds exciting we'd love to hear from you. What you'll do Engineers at Stripe are comfortable working on new products under fluid conditions, seamlessly balancing tactical and strategic considerations all in service of our users. Responsibilities Deliver a world-class mobile experience for Treasury users, including working with our partners to design and launch new features and capabilities Scope and lead technical projects, laying the groundwork for our products to iteratively evolve and scale Design, build, expand, and maintain mobile-specific view cross-platform components, backing APIs and their services Align our technical decisions with the broad strategic initiatives at Stripe, while also advocating for needs specific to emerging new businesses Work with engineers across the company to understand when to leverage existing infrastructure versus when building a bespoke solution is prudent Make effective tradeoffs that consider business priorities, user experience, and a sustainable technical foundation Who you are We're looking for someone who meets the minimum requirements to

ReactRestAIGo
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📍 London, Greater London, United Kingdom· Full-time
✓ High-confidence listingCompany trend -100%
Quick readStrong listing-quality and freshness signals

About the Team OpenAI’s Network Security team designs and operates the secure, reliable connectivity behind our offices, labs, campuses, cloud environments, people, and devices. We combine strong network fundamentals with automation, observability, and close partnership across IT, Security, Research, Applied, and business teams. About the Role As a Network Engineer, you will design, operate, troubleshoot, and automate secure, reliable networks across offices, labs, cloud connectivity, and production services. You will balance strategic platform work—architecture, standards, roadmaps, lifecycle planning, and automation—with responsive operations such as incidents, escalations, break/fix, and time-sensitive delivery. We’re looking for broad network engineers who meet users where they are, lead with curiosity, own outcomes end-to-end, move with urgency grounded in security, and iterate with purpose. You will turn operational signals and recurring reactive work into durable systems and standards. In this role, you will: End-to-end ownership of secure enterprise routing, switching, wireless, WAN, network services, and cloud connectivity. A deliberate balance of strategic platform improvement and responsive troubleshooting, change safety, incident response, and operational delivery. Purposeful iteration through software, APIs, Infrastructure-as-Code, Git workflows, testing, and CI/CD that reduces recurring reactive work. You might thrive in this role if you have: End-to-end ownership of secure enterprise routing, switching, wireless, WAN, network services, and cloud connectivity. A deliberate balance of strategic platform improvement and responsive troubleshooting, change safety, incident response, and operational delivery. Purposeful iteration through software, APIs, Infrastructure-as-Code, Git workflows, testing, and CI/CD that reduces recurring reactive work. Compensation, Benefits and Perks This is a position with OpenAI UK Ltd., which controls the hiring and manageme

ReactAWSCI/CDGit
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📍 London, Greater London, United Kingdom· Full-time
✓ Quality checkedCompany trend -100%

About the Team The Applied AI team is responsible for ensuring the safe and effective deployment of Generative AI applications for developers and enterprises. We act as a trusted advisor and thought partner for our customers, working to build an effective backlog of GenAI use cases for their industry and drive them to production through strong technical guidance. As the leader of our ADEs in the Large Enterprise segment, you’ll help companies transform their business through solutions such as customer service, automated content generation, and novel applications that make use of our newest, most exciting models. About the Role We are seeking an Applied AI Engineering leader to ensure the technical success of our most strategic Large Enterprise customers across EMEA. In this role, you will manage the entire implementation journey, ensuring seamless platform integration. As the voice of our customers, you will align technical teams to deliver a consistent and exceptional experience throughout the customer lifecycle. Success will be measured by live production applications, increased API adoption, and impactful customer stories that demonstrate the value of our technology. This role is open in both our London and Munich offices. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees. In this role, you will: Own the strategy and operating model of the Large Enterprise Applied AI team, ensuring alignment with company objectives and the evolving needs of our customers. Lead, build, and mentor a team of high-performing ADEs to deliver exceptional customer outcomes, as demonstrated by production customer applications and increased API adoption. Serve as the technical advocate for our customers, synthesizing their needs to develop the Research and Applied Product/Engineering roadmaps. Act as the primary technical escalation point during development, fostering trust and maintaining direct communication with executive-level

AWSRestAIRust
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📍 London, Greater London, United Kingdom· Full-time
✓ Quality checkedCompany trend -100%

About the Team OpenAI’s mission is to ensure the responsible and widespread adoption of artificial intelligence. In support of that mission, the Ads Solutions team partners closely with advertisers to deeply understand their businesses and needs, helping inform the development of products and solutions that drive meaningful revenue growth and long-term success on the platform—while maintaining strong standards for user trust and platform integrity. About the Role We’re looking for an Ads Solutions Engineer to partner with advertisers and agencies throughout the pre-sales and growth lifecycle, helping them successfully evaluate, launch, and scale on OpenAI’s advertising platform. You will serve as the technical expert in the sales process, translating advertiser objectives into scalable technical solutions across measurement, integrations, data activation, and campaign execution. This role sits at the intersection of sales, product, and engineering. You’ll work closely with Client Partners, Customer Success Managers, Product, Engineering, Policy, and Operations teams to remove technical blockers, accelerate revenue growth, and shape the future of OpenAI’s ads platform. This role is based in London, UK. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees. In this role, you will: Partner with Client Partners during the sales cycle to provide technical expertise that unlocks new business and accelerates deal closure. Lead technical discovery with advertisers and agencies to understand data flows, martech stack, measurement requirements, and activation goals. Design and recommend implementation approaches for pixels, APIs, server-to-server integrations, identity solutions, offline conversions, and measurement frameworks. Guide advertisers through onboarding and launch readiness, ensuring successful setup of tracking, attribution, audience signals, and reporting. Troubleshoot technical issues related to implementati

SQLAWSGitRest
O
📍 London, Greater London, United Kingdom· Full-time
✓ Quality checkedCompany trend -100%

About the team OpenAI’s mission is to build safe artificial general intelligence (AGI) which benefits all of humanity. This long-term undertaking brings the world’s best scientists, engineers, and business professionals into one lab together to accomplish this. In pursuit of this mission, our Go To Market (GTM) team is responsible for helping customers learn how to leverage and deploy our highly capable AI products across their business. The team is made of Sales, Solutions, Support, Marketing, and Partnership professionals that work together to create valuable solutions that will help bring AI to as many users as possible. About the role As an Account Director focused on Life Sciences, you will own executive-level relationships with leading life sciences organizations, including global pharmaceutical manufacturers, medical device companies, and contract research organizations. You’ll help these companies safely and effectively deploy OpenAI’s technology to transform R&D productivity, automate documentation, enhance regulatory workflows, and personalize patient and provider engagement. This role blends scientific literacy, technical depth, business acumen, and relationship-driven enterprise sales. You will collaborate closely with researchers, engineers, and healthcare-focused solution strategists to design secure, compliant, and high-impact AI deployments. This role is based in London. In this role, you’ll: Manage a focused portfolio of large pharmaceutical and life sciences accounts, developing long-term strategic account plans Lead complex, multi-stakeholder sales cycles spanning R&D, medical, regulatory, and commercial functions Partner with solutions and research engineering to design pilots that demonstrate measurable business and scientific impact Collaborate with compliance, privacy, and security teams to ensure responsible deployment of AI in regulated environments Own a revenue and consumption target; manage forecasts and pipeline reporting Monitor

AWSRestAIGo
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📍 London, Greater London, United Kingdom· Full-time
✓ Quality checkedDemand 56/100Company trend -100%

About the Team Our London-based team builds the backend systems that help ChatGPT scale reliably. We work on infrastructure close to the product, partnering with engineering teams to improve the performance, resilience, and operability of critical user-facing systems. Our work combines backend software engineering with distributed systems and production reliability. We build shared capabilities, improve high-traffic workflows, and make it easier to introduce new product functionality without compromising performance or availability. About the Role This role is for software engineers who want to build and evolve backend systems operating at significant scale. You’ll write production code, design shared infrastructure, and solve technical challenges involving performance, distributed systems, and system reliability. You’ll also own how those systems behave in production: how changes are rolled out, how issues are detected and diagnosed, and how recurring operational problems can be addressed through better software and system design. This is a strong fit for backend engineers who enjoy complex systems problems and want a direct connection between the infrastructure they build and the experience of ChatGPT users. In this role, you will: Design, build, and maintain backend systems supporting high-traffic ChatGPT experiences. Develop shared services, APIs, and infrastructure that help product teams build and launch new capabilities safely. Improve the performance, scalability, and efficiency of production systems as usage and product complexity grow. Build and improve systems for asynchronous processing and other large-scale backend workloads. Lead architectural improvements and infrastructure migrations while maintaining correctness, compatibility, and safe rollout and rollback. Strengthen monitoring, alerting, and diagnostics to detect problems early and reduce customer impact. Participate in on-call, incident response, and root-cause analysis, and turn operational lea

AWSRestAIGo
P
📍 United Kingdom· Full-time
✓ Quality checkedCompany trend -100%

Who Are We? Postman is the world’s leading API platform, used by more than 45 million+ developers and 500,000 organizations, including 98% of the Fortune 500. Postman is helping developers and professionals across the globe build the API-first world by simplifying each step of the API lifecycle and streamlining collaboration—enabling users to create better APIs, faster. The company is headquartered in San Francisco and has offices in Boston, New York, Austin, Tokyo, London, and Bangalore - where Postman was founded. Postman is privately held, with funding from Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. Learn more at postman.com or connect with Postman on X via @getpostman. P.S: We highly recommend reading The "API-First World" graphic novel to understand the bigger picture and our vision at Postman. The Opportunity Postman is the world’s leading API platform, helping organizations across every industry collaboratively design, build, test, document, share, and manage their APIs. Our rocket continues to reach new heights, which is why we are looking for an experienced Enterprise Solutions Engineer to support our rapidly growing enterprise customer base in the UKI (UK + Ireland) region. As a Enterprise Solutions Engineer at Postman, you will partner closely with the Sales, Product, and Customer Success teams to deliver technical expertise throughout the sales cycle. You will be a trusted advisor to our customers, helping them understand how Postman’s platform can streamline their API lifecycle, improve collaboration, and drive innovation. You will play a critical role in shaping customers’ API strategies, influencing product adoption, and ensuring technical success. If you are passionate about APIs, software development, and solving complex customer challenges, we would love to have you on the team! What You’ll Do Account Strategy Lead technical discovery sessions to uncover customer challenges, understand pain points, and

AWSAzureGCPCI/CD
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📍 United Kingdom· Full-time
✓ Quality checkedCompany trend -100%

Who Are We? Postman is the world’s leading API platform, used by more than 45 million+ developers and 500,000 organizations, including 98% of the Fortune 500. Postman is helping developers and professionals across the globe build the API-first world by simplifying each step of the API lifecycle and streamlining collaboration—enabling users to create better APIs, faster. The company is headquartered in San Francisco and has offices in Boston, New York, Austin, Tokyo, London, and Bangalore - where Postman was founded. Postman is privately held, with funding from Battery Ventures, BOND, Coatue, CRV, Insight Partners, and Nexus Venture Partners. Learn more at postman.com or connect with Postman on X via @getpostman. P.S: We highly recommend reading The "API-First World" graphic novel to understand the bigger picture and our vision at Postman. Account Strategy Lead technical discovery sessions to uncover customer challenges, understand pain points, and determine where Postman can provide the most value. Build and nurture strong relationships with technical leaders and decision-makers. Provide guidance on best practices for leveraging Postman effectively throughout the entire API lifecycle. Collaborate with customers to set clear success criteria, design and deliver tailored proofs of concept, and bring those goals to life through engaging demos, workshops, and hands-on sessions that highlight Postman’s strengths. Work closely with Sales, Product, and Customer Success teams to ensure alignment across plans and execution, driving outcomes that support customer goals. Customer and Industry Insights Maintain a deep understanding of Postman’s capabilities, the API ecosystem, and industry trends (e.g., AI in API design, DevOps, and API security). Collect and share customer insights with Product and Engineering teams to influence roadmap decisions and enhance overall customer experience. Marketing and Evangelism Represent Postman at industry events, conferences, and webinars. C

AWSAzureGCPCI/CD
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📍 London, Greater London, United Kingdom· Full-time
✓ Quality checkedCompany trend -100%

About Ema Ema is building the world’s leading Agentic AI platform to transform enterprise productivity. We enable organizations to delegate repetitive tasks to Ema, the Universal AI Employee, delivering 10x gains in workforce efficiency, across functions. Founded by former executives from Google, Coinbase, Flipkart, and Okta, our team includes engineers from premier tech companies and graduates of Stanford, MIT, UC Berkeley, CMU, and IITs. We are backed by industry leading investors including Accel, Naspers/Prosus, Section32, and angels like Sheryl Sandberg and Dustin Moskovitz. Headquartered in Silicon Valley and with offices in London, Bangalore and Vancouver, Ema is at the frontier of what Agentic AI can do in production — we ship real systems that run real business processes at scale. Who we are Ema is building the world’s largest agentic AI platform to revolutionize enterprise productivity. Our proprietary technology enables companies to delegate repetitive tasks to Ema, the Universal AI employee, unlocking 10x gains in workforce efficiency. Founded by ex-Google, Coinbase, Flipkart, and Okta executives, we bring deep product and scaling expertise to this mission. Our team includes top engineers from Google, Microsoft Research, Facebook, Square, and Coinbase, and alumni of Stanford, MIT, UC Berkeley, CMU, and IITs. We’ve raised over $90M from top-tier investors including Accel, Naspers/Prosus, Section32, SCB10X, Sozo Ventures, Hitachi Ventures, and prominent angels like Sheryl Sandberg, Jerry Yang, and Dustin Moskovitz. Ema is headquartered in Silicon Valley with hubs in London, Vancouver and Bangalore. Role Overview We are seeking a seasoned AI Strategist to lead strategic enterprise accounts and play a pivotal role in shaping high-impact AI engagements. This role will work closely with our Executive Leadership Team, providing leverage on our most important deals and helping drive transformative AI adoption across major enterprises. The ideal candidate has prev

GitAIGoRust
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📍 United Kingdom· Internship
✓ Quality checkedCompany trend -97.1%

At Snowflake, we are powering the era of the agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator that is core to how you solve problems and accelerate your impact. We look for low-ego individuals who thrive in dynamic and fast-moving environments and move with an experimental mindset — who rapidly test emerging capabilities to discover simpler, more powerful ways to deliver results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. What You'll Do Support the delivery of strategic events across EMEA, including executive programmes, conferences, workshops, and Snowflake owned events. Assist with event logistics, including venue research, supplier coordination, delegate management, registration tracking, catering, signage, branded materials, shipping, run-of-show documents, and on-site support. Help coordinate cross-functional stakeholders, including sales, marketing, communications, partner teams, executives, customer success, agencies, vendors, and external speakers. Contribute to event project plans, timelines, trackers, briefing documents, and status updates to ensure teams remain aligned and deadlines are met. Support attendee experience from invitation through to post-event follow-up, helping ensure every touchpoint feels polished, relevant, and on-brand. Help maintain event data and reporting, including registration lists, attendance tracking, feedback summaries, lead capture, budget updates, and post-event performance analysis. Conduct research into venues, competitors, industry trends, audience segments, event formats, and best practices to help the team continuously improve. Support content and communications for events, including agenda drafts, speaker bios, event descriptions, briefing notes,

RestAIGoRust
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📍 United Kingdom· Full-time
✓ Quality checkedCompany trend -97.1%

At Snowflake, we are powering the era of the agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator that is core to how you solve problems and accelerate your impact. We look for low-ego individuals who thrive in dynamic and fast-moving environments and move with an experimental mindset — who rapidly test emerging capabilities to discover simpler, more powerful ways to deliver results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. The Services Solutions Manager (SSM) is a fully qualified professional responsible for managing complex engagements. This role focuses on the strategic transition of customers from purchasing "hours" to achieving "defined impact" and business value. You will act as a consultative challenger, ensuring that every Statement of Work (SOW) is a rigorous, milestone-driven roadmap linked to specific business outcomes. WHY THIS ROLE? Complex Problem Solving: Work on problems of diverse scope where analysis of data requires evaluation of identifiable factors. Strategic Impact: Own the services lifecycle for high-stakes, complex engagements, ensuring technical discovery is grounded in core product capabilities. Operational Leadership: Implement formal Scope Governance and maintain practice margin health through meticulous SFDC rigor. WHAT YOU’LL DO: Consultative Challenger: Provide the confidence to challenge unrealistic customer requests and offer strategic trade-off options to protect project health and customer success. Scope Governance: Lead deep technical discovery pre-signature and implement formal, auditable change management processes for all scope modifications. Commercial Data Integrity: Own the accuracy of bookings forecasts and financial milestones in SFDC, ensuring the c

S
📍 United Kingdom· Full-time
✓ High-confidence listingCompany trend -97.1%

From $400K/yr

Quick readStrong listing-quality and freshness signals

At Snowflake, we are powering the era of the agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator that is core to how you solve problems and accelerate your impact. We look for low-ego individuals who thrive in dynamic and fast-moving environments and move with an experimental mindset — who rapidly test emerging capabilities to discover simpler, more powerful ways to deliver results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. Observe by Snowflake brings AI-native observability to the Snowflake AI Data Cloud helping engineering and data teams debug, optimize, and understand systems operating at massive scale. Modern systems don’t break at GB/day they break at TB/day. Traditional, index-based observability tools weren’t built for this world. Observe by Snowflake unifies telemetry and business data, applies AI to connect context automatically, and reduces time to resolution from hours to minutes. We’re entering the next phase of growth: scaling to $1B in the next 5 years. We’ve moved successfully upmarket into complex enterprise deals, larger ACVs, and strategic customer relationships. This is a high-impact role for a seller who wants to operate at the intersection of AI, data infrastructure, and modern engineering and help define a new category. WHAT YOU’LL DO Own full-cycle enterprise sales, from self-sourced pipeline through close Build and convert pipeline in a high-velocity, high-ACV environment (now ~$400K+ enterprise deals) Lead technical, consultative conversations around AI-driven observability and data strategy Sell into engineering, SRE, and data leaders solving problems at TB-scale Drive $500K plus land-and-expand motions with multi-million dollar growth potential Work cross-functionall

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📍 United Kingdom· Full-time
✓ Quality checkedCompany trend -97.1%

At Snowflake, we are powering the era of the agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator that is core to how you solve problems and accelerate your impact. We look for low-ego individuals who thrive in dynamic and fast-moving environments and move with an experimental mindset — who rapidly test emerging capabilities to discover simpler, more powerful ways to deliver results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. ABOUT THE ROLE The Snowflake Cortex team is on a mission to bring the transformative power of generative AI and machine learning to enterprise customers, seamlessly and securely within the Snowflake Data Cloud. We are seeking an entrepreneurial and customer-obsessed Product Manager to lead the product vision and execution for our AI Solutions and Services. In this role, you will own the end-to-end product lifecycle for some of our most exciting AI services. You will be responsible for understanding customer needs, defining the product roadmap, and working with a world-class engineering team to deliver innovative solutions that make it easy for any user to leverage AI. You will sit at the critical intersection of customers, our forward-deployed engineering team, core engineering, and GTM strategy, driving the future of AI within the Data Cloud. If you are obsessed with building products that are both powerful and simple, and thrive on turning ambiguity into impact, this is the role for you. AS A STAFF APPLIED AI PRODUCT MANAGER AT SNOWFLAKE, YOU WILL: Own the Product Vision & Roadmap: Define and articulate a clear, compelling strategy for large-scale AI solutions. You will architect and own the end-to-end product lifecycle, from deep discovery and detailed requirements t

Machine LearningAIGoRust
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