26 to 50 of 77 API Design Jobs in London

reliability, and performance of our applications.Design and implement monitoring, alerting, and incident response systems.Collaborate with application software engineers (as needed) to guide their design and ensure it scales for what Carta needs in the long run.Act as an agent of change and push boundaries to incrementally improve our systems … secure, reliable, scalable and performant infrastructure to Carta's customers and developers.We are Software and Infrastructure Engineers who specialize in cloud computing, networking, systems design and architecture, storage, real time data telemetry, associated automation, tooling and processes. We possess a breadth and depth of knowledge about Carta's infrastructure ...

will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important. Responsibilities Working in a team of Front-End engineers Writing clear & concise code Working closely with Back-End engineers Participate … architecture design code reviews API design with the Back-End engineers and other team members to establish more functional, cohesive code Create, maintain documentation while implementing the best coding practices standards Hands-on approach Participation in sprint rituals What you’ll need 6+ years experience developing large ...

engineering and delivery, shaping how apps, services, and systems come together. It’s a varied role that mixes hands-on coding with architectural design and technical leadership. You’ll design and build modern environments, integrate multiple SaaS platforms, and help set the standards for how things are done … code using Terraform and CloudFormation• Docker and Kubernetes• Automation and CI/CD pipelines• GitHub and GitHub ActionsSoftware and Frameworks• React, Node, Next.js, Python• API design and integration• RESTful services and automationData and Platforms• Salesforce• Google Workspace• Atlassian tools such as Jira and Confluence• Databases including DynamoDB, MongoDB ...

across the organisation to build scalable developer platforms, influence engineering strategy and drive the adoption of Generative AI and modern engineering practices.Key ResponsibilitiesDrive the design and delivery of enterprise-scale applications supporting critical business functions and large user populations.Remain hands-on with software architecture, system design, code reviews … using Kubernetes, containers, microservices and event-driven architectures.Strong understanding of distributed systems, resiliency patterns, scalability and performance engineering.Strong knowledge of SQL and NoSQL technologies, API design and integration patterns.Excellent communication and stakeholder management skills with the ability to influence technology decisions across numerous teams and organisations.Growth mindset with ...

security etc). Working within a project management/agile delivery methodology Experience in technical ownership for a product or software solution, covering design, estimation, shaping and user story/requirement creation Documentation of solutions (e.g. architecture, configuration, release, support-handover Collaborate and liaise with other Version … including microservices and message-driven architectures NFR/Non-Functional requirement understanding and experience developing applications with this in mind Application/Digital Services Design experience Experience in software engineering practices like Code Reviews, CI/CD Pipelines and SOLID/DRY principals Hands-on developing/coding role ...

seeking a Principal Engineer in Corporate and Investment Banking to serve as a senior technical authority for AI solutions. This role defines architecture, design, engineering standards, and delivery patterns for secure, resilient, and governed agentic AI systems. In this role you will Serve as a senior technical authority … engineering strategy, architecture, and implementation across complex, multi-domain initiatives. Design, build and guide enterprise-grade AI systems including RAG platforms, agentic workflows, chat experiences, orchestration layers, evaluation pipelines, and reusable AI services. Establish scalable, secure, and compliant architecture patterns for Agentic solutions using industry standard frameworks. Provide hands ...

Overview: Youll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep backend engineering, distributed system design, and high-quality serverless delivery, plus the chance to adopt modern AI-assisted development practices as part of your workflow. What Youll Bring: Senior … ability to architect and lead distributed REST microservices at scale. Strong authority in AWS serverless engineering: Lambda-first mindset, hands-on experience with API Gateway, SQS, Step Functions, EventBridge and IAM. Deep data expertise across Aurora MySQL and DynamoDB: schema design, access patterns, indexing, query tuning, and pragmatic ...

POCs, multi-stakeholder deals, and usage-based commercial models rather than seat-based subscriptions.This is a 0-to-1 build. If you have built API or data products before and want to do it again in a market where the opportunity is wide open, this is it.What … what format, through which channels, and in what order, balancing client demand, data readiness, and commercial potentialDesign the developer experience end-to-end: API design, documentation, developer portal, sandbox/playground, error handling, rate limiting, and versioningWork with analytics engineering and domain teams to define schemas, data models ...

Consultant) to join our Technology Delivery team. In this role, you'll combine deep expertise in AI/ML engineering and software development to design, build, and deploy advanced generative AI and agentic systems for leading financial services clients. You'll work hands-on across the full AI engineering … experience deploying LLMs and multi-modal AI models within enterprise or large-scale production environmentsStrong software engineering expertise in Python, including backend development, API design, and distributed systemsSolid understanding of scalable MLOps, observability, CI/CD practices, and cloud-native AI deployment architecturesExcellent communication, stakeholder management, and problem ...

foundational systems that power our embedded finance platform at global scale. The team owns multi-tenant infrastructure, drives cross-domain product capabilities, and helps design technical solutions for enterprise customers.Key areas of ownership include:Embedded Finance Platform: Build and maintain the infrastructure powering customers like Rippling, Navan, Qantas … management, and career development.Set technical direction for scalable, reliable backend systems and partner with senior engineers on architecture and design.Ensure high standards for system design, code quality, testing, and operational excellence.Drive improvements across reliability, observability, security, and developer productivity.Work cross-functionally with product, design, compliance, sales, and engineering ...

solutions. The ideal candidate is a hands-on architect who can define target state architecture, guide engineering teams, and drive best practices across system design, integration patterns, and platform strategy.Responsibilities:Define and own the architecture for applications and services across the end-to-end commodities trade lifecycle.Lead the design … resiliency, including monitoring, alerting, automated controls, reconciliation frameworks, and reprocessing capabilities.Govern architecture decisions with a focus on performance, scalability, maintainability, security, and cost efficiency.Lead design reviews and provide technical direction to engineering teams, promoting strong engineering standards, reusable patterns, and consistent integration approaches.Drive adoption of modern SDLC and platform ...

Data, AI, and real-time decision-making we turn energy complexity into growth opportunities for our partners. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable and affordable.With teams across Europe, North America, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan … mock services. You move faster than a traditional sprint by using AI to handle the "heavy lifting" of boilerplate and logic generation.Technical Asset Development: Design, build, and maintain reusable mock services in Node.js/TypeScript. You'll implement contract-first APIs (REST/GraphQL), manage AWS deployments (API ...

secure applications, platforms and deployment processes.This is not a traditional vulnerability management role, it is a hands-on Application Security role centred on secure design, CI/CD security, cloud-native technologies, Kubernetes, API security, code analysis, security-as-code and supporting development teams to build secure applications.This … integrating security controls throughout CI/CD pipelines.Strengthening the security of GitHub Actions and comparable continuous integration and deployment platforms.Providing technical guidance on secure API design and protecting externally accessible systems.Supporting the security of Azure cloud infrastructure, including Azure Kubernetes Service (AKS).Assisting with the protection of cloud ...

including authentication and tenant-scoped access patterns Shape how capabilities are exposed through OneSuite (streaming workflows, tool permissions, MCP integrations and stable CLI/API/MCP contracts) Set engineering standards (testing, CI/CD, deployment safety, observability) and mentor senior engineers through reviews, pairing and clear written guidance … QualificationsDemonstrable experince in senior backend, data platform or distributed systems engineering roles, with principal-level ownership across multiple services or teamsExpert Python backend engineering (API design, service boundaries, async/concurrent systems) plus strong SQL and modern testing practicesHands-on Databricks/PySpark experience and lakehouse/medallion ...

creativity and continuous improvement.As a Senior Lead Software Engineer at JPMorgan Chase within the Data Platform & Strategy team within Corporate Risk Technology, you will design, build, and enhance advanced data engineering solutions. You will play a pivotal role in delivering secure, stable, and scalable technology products that support … across multiple technical areas. Your work will help shape the team culture and the impact of our technology solutions.Job Responsibilities:Execute creative software solutions, design, development, and technical troubleshooting to solve complex problemsDevelop secure, high-quality production code for data-intensive applications and review code written by othersIdentify opportunities ...

lead a team of elite engineers who embed directly with Fortune 500 customers to ship deeply integrated AI agents—owning everything from agent design and evaluation to the backend services, data systems, and cloud infrastructure that make them production-ready. You'll partner closely with our Forward Deployed … volume for senior engineering roles.Hands-on fluency with the full AI stack. Deep familiarity with LLMs and agent systems, evaluation frameworks, backend and API design (Python or TypeScript), data systems (PostgreSQL, DynamoDB, MongoDB, or similar), and cloud infrastructure (AWS, Azure, or GCP) including Kubernetes, Docker, and IaC tooling.Experience ...

Software Architect – Retail Wealth Management 100,000 Plus Bonus and Bens 10% Pension Quant Capital is urgently looking for a Technical Architect with REST API Experience to join or well known Fintech client who are a well know wealth management software business. We are looking for a technically strong … architect to help to design and grow a SaaS platform. The company has bold global ambitions. They have a comprehensive microservices architecture in backend and are looking to extend the pattern into an ambitious micro-frontend strategy for user-facing applications. This is a leadership position. You will ...

Experience with AWS or Azure Familiarity with Docker and Kubernetes Experience working in secure or highly regulated environments Strong understanding of software architecture and API design IT WOULD BE NICE FOR THE AI SOFTWARE ENGINEER TO HAVE. Experience with RAG pipelines and vector databases Knowledge of MLOps tooling ...

Experience with AWS or Azure Familiarity with Docker and Kubernetes Experience working in secure or highly regulated environments Strong understanding of software architecture and API design IT WOULD BE NICE FOR THE AI SOFTWARE ENGINEER TO HAVE.... • Experience with RAG pipelines and vector databases • Knowledge of MLOps tooling ...

skilled Java Software Engineer with a growing interest and demonstrated exposure to AI/ML integration. This role is primarily Java-centric — you will design and build cloud-native microservices on our BPA (Beyond Policy Administration) platform — with the expectation that you actively apply AI tooling and patterns … prototype level. Role Details Location: London Experience: 4–7 years of overall software engineering experience Engagement Model: Full-time, Product Engineering Job Responsibilities Design and implement RESTful APIs and microservices using Java 17+ and Spring Boot 3.x. Build and maintain business logic within the BPA platform, ensuring correctness, performance ...

Develop and maintain high-quality software applications using .NET (4.5+/.NET Core) and Python. Collaborate with cross-functional teams to gather requirements and design effective solutions. Provide support to team members and stakeholders to ensure smooth project execution. Liaise with technical and business colleagues to understand functional requirements … deliver solutions that align with business objectives. Utilise your understanding of Web Services (REST, SOAP) to design and document APIs effectively. Work with MS SQL Server, including TSQL, SSIS, SSRS for database management and reporting. Utilise version control tools such as Git/Bitbucket and job scheduling tools like ...

teams to understand how they use the platform, debug their issues, and shape a roadmap that balances immediate needs with long-term architecture.You will:Design and build the sandboxing platform, client library, and API surface for secure code execution across containerized and virtualized environmentsEnsure strong isolation, security … maintain a product roadmap for sandboxing, balancing immediate needs against long-term architectural investmentLead architecture reviews and own projects end-to-end, from design through deployment, in fast-paced cross-functional settingsIdeally you'd have:4+ years of experience building high-performance systems software, with meaningful time spent maintaining ...

working on the underlying systems that make complex visualisations fast, accurate, and scalable. The challenges range from rendering performance and interaction design through to algorithms, graphics, API design, and numerical correctness. What you’ll be doing Designing and building core charting features used by developers around … exceptionally high technical standards High levels of ownership and autonomy Small team, significant impact Opportunity to deepen expertise in performance, graphics, visualisation, and systems design Package Salary up to £200,000 Hybrid working (London) Private healthcare Pension Additional benefits If you’re interested in building the technology behind modern ...

contributing to architecture, delivery, and continuous improvement. This is a hands-on role with strong influence over engineering standards, quality, and technical direction.Key Responsibilities Design, develop, test, and maintain scalable services using C#/.NET (ASP.NET Core) and RESTful APIs.Build responsive, accessible user interfaces using React, TypeScript, HTML … OAuth2/OIDC) and follow secure coding practices.Optimise performance, reliability, and observability (logging, metrics, tracing).Work with relational databases (e.g., SQL Server) including schema design, queries, and tuning.Write automated tests (unit, integration, end-to-end) and participate in code reviews.Collaborate with product, design, and stakeholders to refine requirements ...

with delivery teams to guide implementation and resolve technical challenges. * Conduct architecture reviews for projects and change requests, validating alignment with EA standards. * Design end-to-end integration solutions across the firm's application estate (Aderant, iManage, Intapp, HubSpot). * Define API contracts, message schemas, and integration patterns … build vs buy decisions. * Conduct proof of concepts (POCs) and technical spikes to validate architectural approaches. Required Experience: * Experience in solution architecture, technical design, or senior development roles. * Strong experience designing integration solutions across enterprise applications. * Excellent knowledge of API design, messaging patterns, and integration architectures. * Experience ...