76 to 100 of 118 API Design Jobs

full-stack product delivery, from infrastructure and AI integrations through to React/React Native interfaces, collaborating closely with founders, creators, product, and design to turn lean specs into scalable, user-loved software. We’re looking for a strong generalist with backend depth and real mobile experience. Responsibilities Implement … mobile + web frontend → APIs → data models → integrations) while maintaining quality and velocity. Build React Native mobile apps and shared component systems across products. Design and ship scalable backend services (APIs, integrations, AI workflows). Run tight build → test → iterate → ship loops; provide realistic estimates and surface blockers early. ...

seasoned technical leaders. What matters is how you think, build, and ship. You'll take end-to-end ownership of features from architecture design to measurable impact — shipping code that directly moves revenue, retention, or product velocity. You'll design clean abstractions in ambiguous environments, evolve systems into … . We care about outcomes, not activity. What We're Looking For You've built and shipped real systems. You understand data modelling, API design, system trade-offs, testing, and reliability. You know how to move fast without creating chaos. You're strong in at least one modern ...

senior individual-contributor role within a high-performing engineering team, building asynchronous, message-driven systems designed for scale, resilience, and near-zero downtime. Design and implement high-throughput, low-latency systems processing millions of real-time payment events Build event-driven architectures using modern Java and reactive frameworks Work … extensively with non-blocking I/O, asynchronous flows, back-pressure, and concurrency Contribute to system and API design, focusing on scalability, fault tolerance, and observability Collaborate closely with architects, engineers, and client teams across Europe Operate in Agile environments (Scrum/Kanban) with a strong engineering culture ...

Start Up - Smart Living Platform Fully Remote - Must be UK based £85,000 - £95,000 + Stock Options (DOE) Essential Exp: Laravel, Flutter, SaaS, API Design, MySQL/PostgreSQL/MariaDB G.R.E. Recruitment is DELIGHTED and EXCITED to partner with an exciting UK based PropTech Start-Up company … defining technical standards, scalability strategy, and product direction across the technical ecosystem. In this role you will: Own and evolve a Laravel-based REST API Develop and maintain a Flutter mobile application (iOS & Android) Design and implement secure, multi-tenant architecture Establish clean coding standards and engineering best ...

computer science, engineering, or a related field 2-3 years commercial experience in development Experienced in C# and .NET Core Understanding of RESTful API design and integrations Understanding of CI/CD Pipelines and Git Desirable, but not essential: Experience with Azure Understanding of Containerisation using Docker ...

backend and a React/Redux front end, working with complex datasets, real-time dashboards, and advanced visualisations. You'll be involved in API design, PostgreSQL performance optimisation, frontend state management, CI/CD pipelines, and cloud infrastructure, while collaborating closely with Product, Data, and commercial stakeholders. ...

develop new features, enhance existing systems, and ensure our platform remains stable and efficient. Your deep understanding of Rails architecture, PostgreSQL optimisation, and API design will be essential as you contribute to ongoing development projects. If you enjoy collaborating in Agile/Scrum environments, value clean code ...

budget and quality requirements, and coordinating others as needed. Firmware Architecture and Lifecycle: Develop reliable, portable firmware with a long-life cycle. Firmware Development: Design, develop and maintain embedded firmware in C for Zephyr RTOS and Embedded Linux, including board bring up, drivers and HALs. Code Quality and Standards … another scientific subject. 8+ years of experience in embedded software development in C. A strong knowledge of Computer Science fundamentals in data structures, algorithm design, problem-solving, and complexity analysis. A strong grounding in embedded software architecture, with a focus on maintainability, modularity, fault-tolerance and testability. Confident ...

Autogen, Google ADK). Architecting RAG pipelines, vector database integrations, and prompt management strategies. Building guardrail frameworks to prevent hallucinations, injection and bias. Designing API-first and event-driven architectures. Influencing enterprise roadmaps, governance forums and technical standards. Partnering with senior engineers, value streams, and product stakeholders. What … bring Expertise in Azure AI, AWS Bedrock or Google Vertex. Strong experience with LLM evaluation/MES frameworks. Deep knowledge of integration security, API design and cloud-native patterns. Experience delivering solutions in regulated environments (desirable). Naturally proactive, consultative and comfortable influencing at senior levels. ...

Architect for remote project (Outside IR35.) You will work closely with senior stakeholders and the wider team on both high and low level solution design to provide improvements on existing systems. Provide technical leadership and guidance throughout the project lifecycle, ensuring solutions are scalable, secure, and align with business … complex enterprise solutions. Strong background in software development and system integration. Strong understanding of cloud platforms (AWS, Azure, Google Cloud) Experience with microservices architecture, API design, and integration patterns. Experience with DevOps practices and tools. Please apply now to be considered for this role. ...

evolution of core Ruby on Rails operational platforms. Optimise PostgreSQL performance and Sidekiq background job efficiency. Manage secure third-party integrations and RESTful API design. Partner with Platform teams on AWS and CI/CD reliability. The Person: Deep experience with Ruby on Rails and OOP. Expert in PostgreSQL ...

React Native Flutter Swift Kotlin/Java (Android) Experience of Python or Node.JS, ideally both. Backend & Systems Knowledge Understanding of backend systems and API design. Object-oriented programming experience. Experience working with relational databases (e.g. RDS/PostgreSQL/MySQL). Understanding of microservice architectures and distributed systems. Experience ...

ensure seamless integration across domains with a strong focus on SAP architecture. Develop and maintain the architectural landscape and roadmap aligned with strategic objectives Design high-level architecture solutions and manage architectural artefacts (diagrams, documentation, guidelines) Govern technology transitions, migrations, and decommissioning with defined paths and rollbacks Implement risk … management for critical interfaces and end-of-life technologies Validate and approve architectural concepts for projects and new technologies Manage integration and API strategies, including middleware and contract governance Own SAP data architecture, migration strategy, master data governance, and data protection measures Build capability through coaching, architecture reviews ...

architectural direction, influencing engineering standards, and shaping the evolution of AI-enabled capabilities across the mobile platform. In this role, you will: Lead the design, development, and maintenance of advanced iOS applications, ensuring high performance, quality, and responsiveness across Expedia Group’s product suite. Architect and implement robust, scalable … system and API designs, including effective data modelling to support complex business requirements. Drive cross-functional collaboration to define, develop, and ship impactful features, ensuring alignment with organisational goals and technical strategy. Champion best practices in software engineering, testability, and maintainability through code reviews and mentoring. Safely integrate ...

ensuring solutions are secure, scalable and aligned with the organisation's long-term technology strategy. Key Responsibilities Define and govern technical architecture standards and design principles Provide hands-on architectural leadership across cloud platforms, integrations and development Lead architecture reviews and technical design decisions Support engineering teams with … Senior Developer Strong experience with Microsoft Azure cloud platforms Experience working with Dynamics 365/CRM environments Knowledge of cloud architecture, integrations and API design Familiarity with DevOps and modern engineering practices Strong communication skills and ability to engage both technical and non-technical stakeholders Benefits Salary ...

. What you’ll be doing: Own end-to-end product slices: frontend UX, backend APIs, data models, integrations, and operational reliability. Lead technical design, propose trade-offs, and set engineering patterns for the team. Build fast, robust AI-assisted workflows handling streaming, async jobs, and complex state management. … pairing, coaching, and high-signal code reviews. Tech stack & experience: Frontend: TypeScript + React/Next.js. Backend: Python (FastAPI or similar), async/concurrency, API design, operational readiness. Databases: Postgres, data modeling, migrations, query optimization. SaaS authentication & permissions: OIDC/OAuth, JWT, RBAC/ABAC. Applied AI experience ...

platform used by clients, operations teams and field contractors across the UK. You will work across Python and Django on the backend, contributing to API design, system architecture and end to end feature delivery. The environment includes modern web technologies such as React and HTMX, supported ...

Skills: C#/.NET Microsoft SQL Server CI/CD pipelines Docker Angular Linux RabbitMQ AI Development Tools Nice to have: Redis MongoDB REST API Design Azure Unit Testing Frameworks Benefits Package: Competitive base salary - £65k - £75k (DOE) Career Progression Flexi-Hours Onsite parking Exciting, and unique projects ...

influence architectural decisions at a critical stage of growth. The Backend Engineer (Full Stack, backend-leaning) will take ownership of complex backend REST API Services and deliver scalable systems using TypeScript and Node.js . You will closely with Product, Engineering and Operations, working alongside the Lead Engineer to refine … technical direction, improve delivery standards and elevate system reliability. The Senior Backend Engineer (Full Stack, backend-leaning) will... • Design and maintain scalable Node.js/TypeScript services and REST APIs • Own backend initiatives end-to-end, from architecture to rollout • Strengthen testing strategy across unit and integration layers • Improve data ...

commercial software development experience. Proven success in high-performing engineering teams within fast-paced environments. Deep expertise in: Python (Django, Flask, or FastAPI) PostgreSQL (design, optimisation, maintenance) Containerisation (Docker/Kubernetes) Event-driven architecture (Kafka/RabbitMQ) Desirable experience includes: TypeScript/JavaScript (NextJS, NodeJS, Tailwind) Terraform and DevOps … practices Experience in building and scaling SaaS platforms in production. Strong background in software architecture, microservices, and API design. Hands-on experience with AWS platform. Excellent communication skills, capable of motivating and aligning technical teams. Experience with AI tools, APIs, or ML pipelines is highly desirable. Bonus: Exposure ...

across enterprise systems. Other duties as assigned. Qualifications Bachelor's degree in Programming or related field required. Minimum of three years of experience with API Design and Management (REST, GraphQL, OData, Lingk, OpenAPI/Swagger). Minimum of five years of experience within the Microsoft Development Environment C# … MSSQL, ASPNET.CORE; on the Microsoft stack; and with SQL (complex queries, stored procedures, table design). Knowledge of multiple integration disciplines, web services, REST, OData, file based with FTP. Experience with system integration architecture and design; project management; Visual Basic.NET, Web and Server-Side programming; Windows and Exchange ...

operations teams and field contractors across the UK. You will work on modern web applications using Python, Django, HTML, HTMX and React, contributing to API design, system architecture and end to end feature delivery. This is a high ownership role suited to someone comfortable working autonomously ...

skills & experience Strong scripting and programming (Python essential; Bash/Shell desirable) Proven experience with cloud platforms (AWS and/or Azure) Knowledge of API design and security (OAuth2, OIDC, JWT, etc.) Understanding of AI/ML concepts or a strong interest in building expertise in this area ...

share code with iOS. You’ll be joining a collaborative engineering group working on major new features, shaping technical discussions, influencing architecture and API design, and helping to evolve a category-defining product used across the UK, US and several new international markets launching in 2026. What they ...

Experience and understanding of Laravel & PHP (3+ years experience) Proficiency in writing maintainable, optimised and scalable code. Strong knowledge of object-oriented programming and API design. Experience with database management and advanced queries Technically minded - enjoy digging into data, analytics, and optimisations. Organised, independent, and results-focused — you thrive ...