76 to 100 of 143 Permanent API Design Jobs

agility with the backing of a well-established business. The Senior Back End Developer will... take ownership of backend engineering for a new API-first data intelligence platform. Role Highlights Design and build scalable backend systems from a true greenfield starting point Define architecture, balancing rapid delivery with … long-term scalability Develop API-first services for data-heavy, enterprise-grade applications Embed observability, metrics, and performance tracking from day one Collaborate within a small, high-autonomy team shaping a new product You Will Need Extensive backend development experience within data-driven B2B environments Strong programming skills ...

Senior Applied AI Engineer (.NET) Were looking for a Senior Applied AI Engineer to design and deliver production-grade AI-powered features within a modern .NET product environment. This is a hands-on engineering role focused on applying AI in real systems not training models. Youll work with commercial … role suits someone who has already successfully integrated AI into production products and can bring proven patterns into a growing team. What Youll Do Design and build AI-powered product features within a C#/.NET ecosystem Integrate commercial AI APIs into production systems with a focus on reliability ...

that power these systems, working in a multinational, AI-first engineering team where quality, ownership, and long-term thinking matter. What You’ll Do Design, build, and maintain scalable backend services for Keepnet’s Human Risk Management platform. Build clean, modular APIs that integrate internal services and third-party … enable automation, reporting, and security workflows. Develop testable, maintainable codebases using principles such as Clean Architecture, DDD, and TDD. Own the full development lifecycle : design, implementation, CI/CD (Azure), and post-release monitoring. Work on distributed and asynchronous systems using message queues, background workers, and event-driven workflows. ...

large, ambitious commercial environment. THE ROLE: You will take ownership of designing and delivering backend services within a modern MACH-based digital platform (Microservices, API-first, Cloud-Native and Headless). Working closely with product, frontend and platform teams. Key responsibilities include: Designing, developing and maintaining scalable microservices using … practices across the team YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: TypeScript and Node.js development Microservices-based architectures GraphQL and REST API design Working with SQL and NoSQL databases Modern software development practices, including CI/CD, testing and automation THE BENEFITS: You will receive ...

with strong LLM experience ( Claude preferred). Key Responsibilities: Develop and maintain backend services using Java, with a strong focus on server-side engineering Design and implement scalable, secure, and high-performance APIs Lead backend development initiatives and enforce best coding practices Contribute to the React frontend, ensuring seamless … code reviews, architecture discussions, and performance optimization Requirements : Strong backend development experience with Java (preferably Spring Boot) Deep expertise in server-side architecture and API design/development Proficiency in React for frontend development Hands-on experience with LLM/AI tools (e.g., Claude or similar) and integrating ...

role, with strong backend expertise in Typescript and Node and front capability in React • Proficiency in SQL, Redux, cloud services (AWS or GCP), RESTful API design and GraphQL • Strong analytical skills with the ability to design, optimise, and troubleshoot complex UIs • Excellent communication and leadership skills; ability ...

enterprise-grade emotional brand science into the hands of every marketer → MCP server integrations and agentic tool chains — exposing our Human Motivation Framework as API-accessible AI tools that plug into Claude, Adobe, and enterprise martech stacks → Client-facing interactive products — brand simulators, revenue growth models, and AI-powered … Qualifications Proficient in front-end development: HTML, CSS, and modern JavaScript frameworks (React preferred) Skilled in back-end development: server-side languages, database management, API design Proven full-stack delivery — end-to-end ownership from architecture to deployment Strong experience with Claude Code — show us what ...

development (including personal or academic projects) A degree in Computer Science, Information Technology, or a related discipline Solid grounding in web development fundamentals, REST API design, and secure coding practices Proficiency in React and TypeScript, with a clear sense of how to build maintainable component hierarchies Experience with ...

This is a hands-on engineering role focused on integrating commercial AI APIs into a .NET ecosystem not building models from scratch. You will design, develop, and deliver production-ready features that rely on services such as Anthropic Claude, AWS Bedrock, and OpenAI. AI-assisted development will … team where AI was embedded into real products and can bring proven patterns, practices, and standards into a new environment. What Youll Do Design and implement AI-powered product features within a C#/.NET stack Integrate commercial AI APIs into production systems with reliability and scalability in mind ...

infrastructure. THE ROLE: Key responsibilities include: Owning and maintaining AWS infrastructure (Lambda, Step Functions, DynamoDB, S3). Building and enhancing internal Python libraries (API design, releases, versioning). Managing trackers, Lambdas, Step Functions, DynamoDB tables, and API integrations (including Slack-based pipelines). Operating across the full … engineering lifecycle, from design through to production deployment. YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: Python AWS services including Lambda, Step Functions, S3, DynamoDB, EC2/ECS. Infrastructure-as-code (Terraform or CloudFormation). CI/CD, testing, and software engineering best practices. THE BENEFITS ...

infrastructure. THE ROLE: Key responsibilities include: Owning and maintaining AWS infrastructure (Lambda, Step Functions, DynamoDB, S3). Building and enhancing internal Python libraries (API design, releases, versioning). Managing trackers, Lambdas, Step Functions, DynamoDB tables, and API integrations (including Slack-based pipelines). Operating across the full … engineering lifecycle, from design through to production deployment. YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: Python AWS services including Lambda, Step Functions, S3, DynamoDB, EC2/ECS. Infrastructure-as-code (Terraform or CloudFormation). CI/CD, testing, and software engineering best practices. THE BENEFITS ...

infrastructure. THE ROLE: Key responsibilities include: Owning and maintaining AWS infrastructure (Lambda, Step Functions, DynamoDB, S3). Building and enhancing internal Python libraries (API design, releases, versioning). Managing trackers, Lambdas, Step Functions, DynamoDB tables, and API integrations (including Slack-based pipelines). Operating across the full … engineering lifecycle, from design through to production deployment. YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: Python AWS services including Lambda, Step Functions, S3, DynamoDB, EC2/ECS. Infrastructure-as-code (Terraform or CloudFormation). CI/CD, testing, and software engineering best practices. THE BENEFITS ...

Improving engineering practices and contributing to shared standards Sharing knowledge through documentation, pairing and onboarding support Technology environment Frontend: React, TypeScript, shared component libraries, design systems and accessible UI principles Backend: Node.js with TypeScript, REST APIs, SQL and NoSQL databases Infrastructure: Modern CI/CD pipelines, automated testing … ownership of engineering projects end-to-end Experience working across multiple services or codebases in a product team Good understanding of databases, integrations and API design Experience building secure, performant and observable systems Clear communication skills and the ability to explain technical decisions A collaborative, supportive approach with ...

holds up under real world pressure. What you will be doing: Designing and building scalable backend systems in Python, with a strong focus on API design and data handling Owning features end to end, from discovery through to deployment and iteration Contributing to architectural decisions across a microservices … team What they are looking for: Strong Python experience, with a track record of building and maintaining production systems Solid understanding of system design, particularly around APIs and distributed architectures Experience working with AWS and modern deployment practices Engineers who care about code quality, CI/CD, and building ...

holds up under real world pressure. What you will be doing: * Designing and building scalable backend systems in Python, with a strong focus on API design and data handling * Owning features end to end, from discovery through to deployment and iteration * Contributing to architectural decisions across a microservices … team What they are looking for: * Proven Python experience, with a track record of building and maintaining production systems * Solid understanding of system design, particularly around APIs and distributed architectures * Experience working with AWS and modern deployment practices * Engineers who care about code quality, CI/CD, and building ...

Industry: Security & Intelligence/Government Technology What You’ll Be Doing: Develop and maintain secure, high-performance Java backend services for mission-critical systems Design scalable microservices and APIs that power data-driven platforms and operational tools Build distributed applications capable of handling large data volumes with speed … support live environments Main Skills Needed: Strong Java development experience (Java 11+) using frameworks like Spring Boot Solid understanding of software architecture, OOP and API design Experience building microservices and distributed systems Proven ability to deliver scalable, high-performance backend applications Familiarity with DevSecOps tools (Docker, Kubernetes ...

APIs, Graph QL, Python (nice to have), CI/CD What we're looking for: Strong backend engineering experience (Java + AWS) Microservices and API design expertise Exposure to financial services or regulatory environments (preferred) High visibility role, strong engineering culture, and opportunity to work on large-scale ...

generated code for correctness, security, and financial accuracy Desirable, but no essential: Experience with Apache Airflow or similar workflow schedulers REST or GraphQL API design experience Knowledge of fixed income, FX, or derivatives products and associated P&L/risk methodologies ...

similar highly desirable) Solid experience with MySQL, including optimisation and performance tuning Experience with modern JavaScript frameworks (React, Vue, Angular etc.) Strong understanding of API design (RESTful or GraphQL) Experience working with Linux environments Familiarity with Git, CI/CD pipelines, and agile methodologies A proactive, solutions-focused ...

responsibilities Define and evolve technical architecture in collaboration with enterprise architecture stakeholders Shape deployment, configuration and operational practices to drive consistency, automation and reliability Design and evolve AWS-based serverless microservices and APIs Make pragmatic architectural decisions that balance delivery pace, cost and long-term maintainability Ensure solutions … across the wider engineering function Essential Experience Strong hands-on backend development experience with Python Deep expertise in AWS serverless architecture , including: Lambda/API Gateway/S3/SQS/SNS/EventBridge/Step Functions Proven experience designing and delivering microservices and event-driven architectures Strong experience ...

engineering standards, and ensuring solutions are scalable, secure and fit for purpose. What you'll do Lead the end-to-end development lifecycle from design through to delivery Define technical direction and architecture across Java and AWS services Architect and develop scalable backend services using latest Java (23+ … Spring Boot Drive best practice across TDD, CI/CD, and scalable API design Collaborate with Product, DevOps and QA teams to align technical delivery with business goals Guide technical change and continuous improvement initiatives Support and mentor engineers, fostering a high-performance culture What you'll bring ...

exciting opportunity to use your experience supporting the Metropolitan Police contract. In this role, you will lead software engineering teams responsible for the design, development, and quality of applications and services. You will provide technical leadership and people management, ensuring engineering standards, best practices, and system integrity are consistently … date Managing interface changes and dependencies Maintaining traceability between ICDs and system requirements Collaborate with architects and technical leads on system design Ensure technical documentation is produced and maintained Support governance, compliance, and audit requirements Basic Qualifications Experience as a Software Engineering Manager or similar role Strong background ...

designing and building robust, secure, and high-performance backend systems that support core marketplace functionality and evolving business requirements. Key ResponsibilitiesSystem Architecture & Development Design and implement scalable, maintainable backend architecture Apply SOLID principles, clean code practices, and clear separation of concerns Develop modular components using service-layer and repository … Passport) Service listings (creation, editing, search, filtering) Order lifecycle and transaction management Secure payment integrations (Stripe, PayPal) Internal messaging, reviews, and dispute resolution RESTful API development with versioning support Database & Performance Design and maintain efficient, well-structured database schemas Optimise SQL queries, indexing, and prevent N+1 issues Implement ...

coverage using pytest and playwright Conduct code reviews and contribute to engineering standards Build and maintain UI components using HTMX, SCSS, and the USWDS design system Required Skills 6+ years of Python backend development experience Proficiency with Flask, Jinja, and REST API design Hands-on experience with ...

development. As the Head of Software Architecture you will collaborate with Team Leads across the business to support them with technical architecture and design on large, complex, cloud based distributed systems, ensuring best practice and a cohesive structure. The tech stack is based on modern Java and AWS, using … agentic AI development tools and how to implement them and drive change within the business You have a strong knowledge of microservices architecture, API design, enterprise integration patterns, AWS cloud architecture You have a good understanding of modern software development practices e.g. TDD, CI/CD, DevOps, SecOps ...