126 to 141 of 141 API Development Jobs in London

company helping clients engage in marketing strategies with audiences in virtual worlds. Your Focus: As a Senior Backend Engineer focused on Data Pipelines and API Optimisation, you’ll be central to our platform's performance and scalability. You’ll design, build, and iterate on the systems that handle data … delivery - ensuring they are scalable, reliable, and performant. You should have a strong background in backend engineering, particularly around distributed systems, database optimisation, and API development. You’ll work with technologies like JavaScript and TypeScript to build robust services that meet high standards for performance and reliability. This role … is ideal for someone experienced, self-driven, and excited about leading backend projects involving large-scale data handling and API improvements. Your technical leadership will help evolve our infrastructure and mentor other engineers as we scale. Skills, Knowledge, and Expertise Experience 5+ years in Backend Software Engineering, with a More ❯

company helping clients engage in marketing strategies with audiences in virtual worlds. Your Focus: As a Senior Backend Engineer focused on Data Pipelines and API Optimisation, you’ll be central to our platform's performance and scalability. You’ll design, build, and iterate on the systems that handle data … delivery - ensuring they are scalable, reliable, and performant. You should have a strong background in backend engineering, particularly around distributed systems, database optimisation, and API development. You’ll work with technologies like JavaScript and TypeScript to build robust services that meet high standards for performance and reliability. This role … is ideal for someone experienced, self-driven, and excited about leading backend projects involving large-scale data handling and API improvements. Your technical leadership will help evolve our infrastructure and mentor other engineers as we scale. Skills, Knowledge, and Expertise Experience 5+ years in Backend Software Engineering, with a More ❯

transform the digital guest experience across its world-renowned attractions. You’ll work at the intersection of architecture, security, DevOps, and cloud, guiding the development of resilient systems while embedding best-in-class security practices throughout. Responsibilities Architect secure, scalable, and resilient microservices systems. Define service boundaries, orchestration strategies … capabilities. Stay ahead of emerging trends in microservices, cloud, and security. Skills & Experience Extensive experience designing and implementing enterprise-grade microservices architectures. Strong software development background (Java, .NET, Python) with architectural leadership. Deep understanding of microservices principles, API design, and domain-driven design. Proficient in cloud platforms (AWS … . Hands-on with observability and monitoring tools (e.g., DataDog, Azure Monitor, AppDynamics). Expert in cyber security practices, identity management, encryption, and secure API development. Familiarity with compliance frameworks such as GDPR and PCI-DSS. Excellent stakeholder management and communication skills, ideally in a global or matrixed environment. More ❯

transform the digital guest experience across its world-renowned attractions. You’ll work at the intersection of architecture, security, DevOps, and cloud, guiding the development of resilient systems while embedding best-in-class security practices throughout. Responsibilities Architect secure, scalable, and resilient microservices systems. Define service boundaries, orchestration strategies … capabilities. Stay ahead of emerging trends in microservices, cloud, and security. Skills & Experience Extensive experience designing and implementing enterprise-grade microservices architectures. Strong software development background (Java, .NET, Python) with architectural leadership. Deep understanding of microservices principles, API design, and domain-driven design. Proficient in cloud platforms (AWS … . Hands-on with observability and monitoring tools (e.g., DataDog, Azure Monitor, AppDynamics). Expert in cyber security practices, identity management, encryption, and secure API development. Familiarity with compliance frameworks such as GDPR and PCI-DSS. Excellent stakeholder management and communication skills, ideally in a global or matrixed environment. More ❯

reshaping our operational DNA to drive innovation, efficiency, and exceptional customer experiences in the new era of analytics and automation. Key Responsibilities: RAG System Development Enhance, build new assistants and maintain existing scalable and modular RAG architectures for data retrieval and generation. Develop APIs and microservices and dbt to … extraction and document processing. Ensure data governance, security, and compliance across all applications. Manage Vector Database (PGVector), including indexing and similarity search optimizations. Application Development: Develop interactive UI components to enable self-serve data access and visualization using React or other web frameworks. Apps examples: generic text to SQL … and data modelling using dbt. Implement query translation and enhancement techniques to improve LLM accuracy and retrieval quality. Use AI to speed up code development e.g. Cursor. Security & Infrastructure Management: Collaborate with Platform Engineering teams to manage apps Kubernetes deployments on our Cloud. Ensure security integrations with Azure SSO More ❯

practices. Troubleshoot, debug and optimize applications for performance and scalability. You're a perfect fit if you have: 4+ years of experience in Java development . Experience with front-end technologies (VueJS) and RESTful API development. Proven experience with Microservices and JWT OAuth 2. Expertise with PostgreSQL Database. More ❯

leading the implementation of technical solutions. These solutions are all SAAS based and require someone who is strong in and around the integration/API layer. Although still relatively "hands-on", the position lends itself to someone who is relatively agnostic in their approach who can steer best practice … around tech adoption. Tech : C# Azure IaC API Design and Development (REST) Devops mindset (Microservices/K8s) Excellent communication skills across Senior Stakeholders and various levels of software engineer Interview Process: 3 stages. Exploratory call with Lead Architect>>Tech test with subsequent discussion with wider team (F2F preferred More ❯

leading the implementation of technical solutions. These solutions are all SAAS based and require someone who is strong in and around the integration/API layer. Although still relatively "hands-on", the position lends itself to someone who is relatively agnostic in their approach who can steer best practice … around tech adoption. Tech : C# Azure IaC API Design and Development (REST) Devops mindset (Microservices/K8s) Excellent communication skills across Senior Stakeholders and various levels of software engineer Interview Process: 3 stages. Exploratory call with Lead Architect>>Tech test with subsequent discussion with wider team (F2F preferred More ❯

platform infrastructure using the DevOps methodology. As part of the DevTools team, you will work with internal and external stakeholders to build and maintain development tooling services used across the firm. Required Qualifications: Degree in Engineering, Computer Science, or a related field. 4+ years of experience in DevOps, SRE … or platform engineering roles. Excellent written and verbal communication skills. Ability to work effectively in a fast-paced environment. Strong experience with software development (e.g., Python, Git). Experience with CI/CD pipelines (e.g., GitLab CI, GitHub Actions, Jenkins). Experience with system administration (e.g., Bash, Linux, Containerization … e.g., Artifactory, JFrog, Nexus). Experience with on-premise deployments of developer platforms (e.g., JupyterHub, GitPod). Experience with advanced software engineering concepts and API development. Experience with build and release systems, including publication, replication, distribution, and lifecycle management of packages and artifacts. More ❯

testable code. Essential Skills: Proven experience delivering and supporting FIX protocol-based solutions in a trading or capital markets environment. Strong C#/.NET development skills with solid understanding of multi-threading, architecture, design patterns, and real-time systems. Python proficiency for scripting and API development. Experience working More ❯

testable code. Essential Skills: Proven experience delivering and supporting FIX protocol-based solutions in a trading or capital markets environment. Strong C#/.NET development skills with solid understanding of multi-threading, architecture, design patterns, and real-time systems. Python proficiency for scripting and API development. Experience working More ❯

teams as an advocate for the customer in the creation of world-class enterprise software products. Structure, write, and update conceptual content, tutorials, and API/SDK developer documentation. Continuously improve the user and developer experience by creating and iterating on world-class technical content. Contribute to tools and … processes that make documentation and software development more efficient, scalable, and collaborative. Mentor other writers and provide leadership in product areas. WHAT WE'RE LOOKING FOR: 10+ years experience writing documentation for a variety of audiences, including software engineers, system administrators, and API developers/integrators, as well … the user. A collaborative, team-oriented approach. Comfort with ambiguity. Familiarity with Java, Node.js, Scala, Python, or C++. Familiarity with Postman, Insomnia or other API testing tools. Comfortable with HTML and CSS. Knowledge of Atlassian Confluence or Jira. Familiarity with cryptocurrency, custody, and security. Experience in the finance or More ❯

position and risk management, post-trading analysis, and performance evaluation. You will collaborate with stakeholders at all levels, delivering solutions across the full software development lifecycle (SDLC). The core platform is built on . NET (C#) with SQL Server and KDB databases, complemented by a strategy platform in … Extensive software engineering experience, ideally in the financial industry, with exposure to capital markets. Strong skills in C#, software architecture, multi-threading, and Python API development. Proficiency with relational databases and SDLC tools like Git and JIRA. Why This Role? Excellent career growth potential and exposure to a dynamic More ❯

position and risk management, post-trading analysis, and performance evaluation. You will collaborate with stakeholders at all levels, delivering solutions across the full software development lifecycle (SDLC). The core platform is built on . NET (C#) with SQL Server and KDB databases, complemented by a strategy platform in … Extensive software engineering experience, ideally in the financial industry, with exposure to capital markets. Strong skills in C#, software architecture, multi-threading, and Python API development. Proficiency with relational databases and SDLC tools like Git and JIRA. Why This Role? Excellent career growth potential and exposure to a dynamic More ❯

platforms, and accounting systems Provide ongoing functional support for system enhancements, troubleshooting, and issue resolution Collaborate with IT teams to manage technical requirements, including API integrations and data migrations User Training & Documentation: Develop and deliver user training programs to ensure seamless adoption of Kyriba by Finance and Treasury teams … finance and accounting principles IT Proficiency: Knowledge of system integrations and data migration processes 3+ years of experience in Java, J2EE and Rest APIs development Familiarity with cloud-based platforms and SaaS environments Ability to interface with IT teams for configuration, troubleshooting, and support Soft Skills: Excellent communication and More ❯

streamline deployments, optimize system performance, and ensure robust security and compliance across all environments. Key Responsibilities: Define, build, and maintain cloud infrastructure for production, development, and test environments. Develop and implement deployment strategies, policies, and standard operating procedures. Select, deploy, configure, and operate alerting and monitoring systems. Optimize system … using CI/CD workflows. Strong troubleshooting and performance optimisation skills. Bonus: Experience with container orchestration (Docker/Kubernetes) and familiarity with back-end API development. If you’re an innovative DevOps Engineer ready to drive efficiency and innovation in a dynamic healthcare environment, we’d love to hear More ❯