76 to 100 of 107 Permanent API Design Jobs

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 ...

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 ...

variety of cutting-edge tools and frameworks. Responsibilities: - Build and maintain features across a Next.js/React web application and its supporting services, including API routes, UI components, and authentication flows. - Develop and integrate RESTful APIs and webhooks, working with Supabase (PostgreSQL), Redis/BullMQ job queues, and Node.js … take ownership of tasks end to end. Skills: - Solid JavaScript/TypeScript fundamentals; comfortable working in a Next.js codebase across both the frontend and API layer. - Familiarity with Supabase or PostgreSQL schema basics, queries, and working with Row-Level Security or auth patterns. - Exposure to Swift or willingness ...

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. ...

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 ...

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 ...

architecture and deployments Exposure to cutting-edge AI and real-time data systems Fast-paced, collaborative engineering environment THE BACKEND ENGINEER ROLE: You'll design, build, and maintain high-performance APIs using Python and FastAPI, working with large volumes of live sports data. The systems are real-time … subject to required skills) your application to our client in conjunction with this vacancy only. KEY SKILLS Python, FastAPI, PostgreSQL, AWS, Docker, Backend Development, API Design, Real-Time Systems, Software Engineering, Sports Data ...

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 ...

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 ...

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 ...

following languages: C, C++, Rust. 4+ years of experience in embedded software development in C. Knowledge of Computer Science fundamentals in data structures, algorithm design, problem-solving, and complexity analysis. Strong grounding in embedded software architecture, with a focus on maintainability, modularity, fault-tolerance and testability. Confident and experienced … with automated testing, including unit, integration and system tests, mocking and automation frameworks. An understanding of API design and the creation of clear, stable abstractions for hardware/firmware interaction. Skilled at debugging in constrained environments and using hardware/software debugging tools. A proven track record ...

role in designing, assuring and evolving secure technology solutions across the enterprise. This is a senior technical role where security is embedded by design and by default, enabling innovation while protecting confidentiality, integrity and availability of information assets. About The Security Architect Role: As Security Architect, you will … regulatory requirements into practical, scalable security architectures across systems, platforms and integrations. Key Responsibilities: Define, maintain and evolve security architecture principles, standards and patterns Design and assure security controls for new and existing systems, platforms and integrations Conduct security architecture reviews, risk assessments and threat modelling Provide pragmatic guidance ...

comfortable working as the first and currently only tech specialist and someone with experience across: Workflow automation platforms (e.g., Make, n8n, Zapier, Workato) API design, integration, authentication Python, JavaScript or similar scripting languages AI/ML models (LLMs, embeddings, classification, summarisation) Data wrangling and ETL tools Cloud platforms … Automation. Just imagine how content you could be in a role with masses of autonomy that requires you to challenge yourself and design solutions to help businesses operate better and in turn, overcome any market challenges they may face. One for you? If so apply now, wed love ...

manage state management and data-fetching patterns, integrating seamlessly with RESTful APIs. Contribute to the development and evolution of a shared component library and design system. Maintain code quality through code reviews, automated testing, and continuous integration pipelines. Collaborate with backend engineers to shape API integrations and improve … developer experience. Work with product and design teams to deliver clear, intuitive user experiences for complex workflows. Requirements: Degree in Computer Science or a closely related discipline, minimum 2:1. Evidence of building end-to-end applications through university projects, internships, placements, or personal work. Strong grounding in logical ...

used by internal teams and external developers to interact with advanced hardware systems. Working closely with hardware and FPGA engineers, you will design scalable APIs, integrate hardware drivers and build tools that allow customers to easily integrate systems into their own products. You will also develop simple graphical tools … used internally for testing, debugging and demonstration purposes. Key Responsibilities • Architect, design and maintain a robust SDK for hardware systems • Develop clean, scalable APIs and coding standards • Integrate third-party hardware drivers • Optimise performance for high-throughput data interfaces • Develop simple GUI applications for debugging and demonstrations • Collaborate with ...

calibre team of Software Developers and DevSecOps engineers working on a microservice architecture running on Kubernetes in AWS. It's built following strict functional design principles, TDD and CI/CD pipelines to automatically deploy to production. Youll combine people leadership with technical evolution of the platform through guiding …/CD practices. Are experienced with AWS and infrastructure as code (e.g., Terraform). Have knowledge of event-driven architecture and API design. Feel confident to jump into different aspects of our code base, orient yourself and remove blockers for the team Are motivated to coach and develop engineers ...

stability, correctness and long-term maintainability really matter. Day to day, you will: Own the architecture and technical direction of iOS apps and SDKs Design and build complex features using Swift, with some Objective-C and C++ Tackle challenges around networking, performance, stability and edge cases Stay ahead … Apple platform changes, shaping how the team responds Support SDK integrations and help resolve tricky production issues Run design and code reviews, and help raise engineering standards Make pragmatic use of modern tooling, including AI-assisted development tools, to improve quality and reduce busywork Who this role suits This ...