351 to 375 of 453 API Design Jobs

joining an established team where you’ll have the opportunity to work alongside other Junior and experienced developers, contributing to the design and development of new applications and features, and help maintain and improve existing systems. Responsibilities: Develop, test, and deploy efficient, scalable, and maintainable applications using C# … . 2 – 5 years of professional experience in backend development. Strong proficiency in C# and .NET Core (latest versions). Solid understanding of RESTful API design and integration. Familiarity with CI/CD pipelines and Git for version control and continuous integration. Excellent problem-solving and analytical skills ...

templates, and agentic workflows, and wire them into application logic that connects with the department's legacy and multi-cloud systems. Prompt Engineering & Evaluation Design, test, and iterate on prompts and retrieval strategies; run structured evaluations to track answer quality, retrieval accuracy, and hallucination rate over time. Responsible … build can be understood and maintained by internal government engineers. Required Skills & Experience Practical experience building applications using LLMs or other foundation models, via API or self-hosted Experience with RAG architectures, vector databases, and embedding-based retrieval Solid general-purpose programming (commonly Python) and API design ...

team that executes complex, multi-leg synthetic strategies on behalf of institutional clients.Role OverviewICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands-on delivery of desktop platform automating and streamlining trading desk workflows. This is a high-visibility player-coach role: you will apply … C#/.NET (LTS): back-end services with ASP.NET Core.Experience designing and delivering event-driven, service-oriented back-end systems (message brokers, async workflows, API design) in a production trading environment.Experience building desktop applications that host web content (e.g., Electron, Tauri, or custom .NET host); comfortable with WebSocket ...

integrations and critical internal systems Influence architecture and drive engineering standards Mentor developers and elevate team capability What we expect from you: Understanding of API design, integration and security Experience with relational databases A track record of delivering complex systems with clean architecture The salary for this Full ...

with support for the teams and scientists who depend on them. Key responsibilities include: Own a group of device controllers end to end, covering API design, implementation, rollout and ongoing operational health. Make services robust against the ways real instruments fail. Bring devices onto our current framework ...

practice scales, we are seeking an experienced AI Architect/Engineer to act as the senior technical authority shaping how we design and deliver next‐generation AI solutions. This is a role for someone who has moved beyond building individual models to architecting entire systems: agentic platforms, LLM‐powered … ambiguous business problems into robust, deployable architectures. As engagements mature, you will provide the technical oversight that keeps delivery teams aligned to the original design intent. Your influence will be felt in pre‐sales conversations, solution blueprints, and the technical standards that define how our practice builds. This ...

focused on building a new platform that sits above its existing search technology stack. The project will involve creating a lightweight abstraction layer and API architecture that simplifies the user experience, whilst providing a foundation for future search platform evolution. This is an opportunity to work on a greenfield … quality solutions. Key responsibilities include: Designing and developing .NET Core services and APIs Building abstraction layers between front-end applications and search technologies Developing API services Working with Azure cloud services Designing and maintaining SQL databases Collaborating with senior stakeholders and engineers to refine requirements Contributing to architecture ...

Commerce Cloud and Order Management capabilities to support Heathrows retail and service operations. You will define technical standards, ensure best practices, and guide the design of integrated solutions that enhance customer experience and operational efficiency. Success in this role means delivering secure, scalable, and high-performing platforms that enable … solutions, ensuring alignment with enterprise standards. Collaborating with business and technical teams to translate requirements into scalable, secure, and high-performing solutions. Leading technical design sessions and providing guidance to development teams on best practices and integration patterns. Defining and maintaining architectural documentation, including data models, integration diagrams ...

JPMorganChase in London is seeking a Sr Lead Software Engineer (Java/Python) to help design, build, and deliver high-performance trading software within Digital Markets Execution Technology. You’ll contribute as a core technical member of an agile team, guiding architecture, coding, testing, and operations to meet ambitious … objectives. The role emphasizes secure, observable, and resilient systems, with leadership in code reviews, API design, and deployment across distributed environments. #J-18808-Ljbffr ...

Expedia Group is seeking a Software Development Engineer II (Backend) to design, develop, and maintain high-throughput pricing services. You will implement caching, contribute to API design and data modeling for scalable microservices, and collaborate with cross-functional teams. Required are 2+ years of backend experience with ...

building an automated lab that lets AI agents run biology experiments. We're entering the era of agentic science where AI models can now design novel proteins, propose hypotheses, and iterate on experimental results. But they can't run the experiments themselves - that's still a manual, months-long … biotech today. Our automated lab is powered by a deep software + hardware stack: lab instruments worth millions of USD reverse-engineered into API-controllable hardware, dozens of devices orchestrated through complex workflows, full observability on everything that happens in the lab, processing pipelines for messy physical-world data ...

development lifecycle. You'll help establish a robust security culture as we unlock Granola for the next 100x users. In this role, you will: Design and implement security features within the Granola app to protect user data and strengthen the product's security posture Leverage AI-assisted tooling … security posture Your background looks something like: Extensive experience building production software, with hands‐on exposure to security‐sensitive work (auth, data handling, API design, encryption or similar) and a genuine interest in going deeper into application security Comfortable with secure coding practices and at least ...

immediate requirement for an experienced C/Linux Software Developer. Key Skills: Software Developer, Software Engineer, C, Linux, Autotools, LDAP, Active Directory, Terraform, OpenTofu, API Location: Hybrid but must be able to reach the office near Lymington - SO41 9AZ Salary: £60,000 - £65,000 + benefits Essential Skills Experience … equitant system initialisation frameworks and how they operate at a low level Understanding of secure configuration delivery and deployment auditability of newly provisioned systems API Design & Implementation (maybe): Experience/Familiarity with: Working with OpenAPI (Swagger) specifications to define service interfaces Implementing APIs in C or similarly ...

immediate requirement for an experienced C/Linux Software Developer. Key Skills: Software Developer, Software Engineer, C, Linux, Autotools, LDAP, Active Directory, Terraform, OpenTofu, API Location: Hybrid but must be able to reach the office near Lymington - SO41 9AZ Salary: £60,000 - £65,000 + benefits Essential Skills Experience … equitant system initialisation frameworks and how they operate at a low level Understanding of secure configuration delivery and deployment auditability of newly provisioned systems API Design & Implementation (maybe): Experience/Familiarity with: Working with OpenAPI (Swagger) specifications to define service interfaces Implementing APIs in C or similarly ...

immediate requirement for an experienced C/Linux Software Developer. Key Skills: Software Developer, Software Engineer, C, Linux, Autotools, LDAP, Active Directory, Terraform, OpenTofu, API Location: Hybrid but must be able to reach the office near Lymington - SO41 9AZ Salary: 60,000 - 65,000 + benefits Essential Skills Experience … equitant system initialisation frameworks and how they operate at a low level Understanding of secure configuration delivery and deployment auditability of newly provisioned systems API Design & Implementation (maybe): Experience/Familiarity with: Working with OpenAPI (Swagger) specifications to define service interfaces Implementing APIs in C or similarly ...

product that blends artificial intelligence, aviation expertise, and seamless mobile user experience while partnering closely with our in-house designers. You'll turn complex design concepts into seamless, shippable code and help steer the future of our digital flight tools. What You’ll Do: Develop scalable, high-performance features … other core Apple frameworks (specifically MapKit or similar mapping SDKs) Experience integrating REST APIs, with enough backend understanding to troubleshoot issues and contribute to API design Strong understanding of iOS build systems, provisioning, certificates, and App Store requirements Strong proficiency in Git Bonus Qualifications: Bachelor’s degree ...

Expedia Group in London seeks a Senior Engineering Manager to lead the Hotels.com Technology team. You will guide design and delivery across high-traffic services, own API design and data models, and mentor engineers in a fast-moving, high-quality environment. You will stay technically hands … contribute to code reviews, and champion safe AI/ML adoption while partnering with product, design, data, and platform teams to drive value for travelers and partners. #J-18808-Ljbffr ...

engineer. The role is hybrid in Nottingham, with responsibilities spanning AWS services and Python-based backend development. The candidate should have extensive Django experience, API design expertise (REST/GraphQL), and a strong grasp of modern development practices including TDD and Agile methodologies. #J-18808-Ljbffr ...

five days a week. You will define standards, mentor developers, and drive cloud-native modernization initiatives across Java and Node.js services. You'll own API design, security-first practices, and the CI/CD pipeline, with hands-on work on Azure services, containerisation, and logging. This ...

Boot backend, guiding architecture, mentoring developers, and driving engineering standards. Offering up to £85k in salary with additional benefits. Ideal candidates should have strong API design and delivery experience with complex systems. This role is remote and located in the United Kingdom. #J-18808-Ljbffr ...

finance). Ability to speak the language of business leaders and connect operational bottlenecks to strategic AI solutions. Software/Data Engineering: Python proficiency, API design, SQL, data integration, and ML/AI libraries (PyTorch, TensorFlow, scikit-learn, XGBoost, Hugging Face Transformers). Agentic AI Systems: Hands ...

enabled capabilities. Ideal candidates have strong C#/.NET or Python skills, experience with React/Angular, and a solid background in secure, scalable API design. This role emphasizes collaboration with product stakeholders and cross-team delivery. #J-18808-Ljbffr ...

work on high-throughput, high-reliability systems, with real ownership and real impact, this is a strong next step. What you'll do Design, build, and maintain high-throughput, highly reliable systems that power core parts of the platform. Lead the implementation of key features end-to-end, from … scale as transaction volumes and customer numbers grow. Write clean, maintainable, well-tested code, and help set the engineering standard for the team. Lead design discussions and architecture decisions, balancing short-term delivery against long-term sustainability. Work closely with Product Managers, Designers, Data, Risk, and Operations to turn ...

core integration and technology platform. You will shape and govern the Digital Backbone, connecting systems, data, and services enterprise-wide, while driving API-first principles and governance. The role focuses on architecture leadership, API design and governance, APIOps, and collaboration with stakeholders to align solutions with strategic ...

integrations, data flows, and onchain settlement Translate product, regulatory, and operational requirements into a clear engineering roadmap, well-scoped projects, and sound technical decisions Design and build resilient services for on-ramp and off-ramp transaction lifecycles, including payment initiation, status tracking, settlement, exception handling, and customer notifications Lead … goals Strong backend programming skills. Production experience with Rust is highly desirable; deep experience with Go, Java, C++ can substitute Strong knowledge of API design, PostgreSQL or another relational database, messaging systems, and service-to-service integration patterns Experience in regulated fintech, payments, banking, digital assets, or another ...