101 to 125 of 137 Permanent API Design Jobs

Software Integration Engineer

Hiring Organisation
Akkodis
Location
Stevenage, England, United Kingdom
Role We’re seeking a skilled integration engineer to join our software & integration team. In this role, you’ll be responsible for the discovery, design, and documentation of integrations across our cloud platforms, enabling seamless data flow between systems. You’ll work closely with software engineers, business analysts, cloud … architects, and QA teams to deliver scalable and maintainable integration solutions Responsibilities Design and develop integrations for implementation within a low-code/no-code environment Collaborate with business analysts and solution architects to translate business requirements into integration solutions Document integration designs, data flows, and technical specifications clearly ...

Senior Backend Engineer

Hiring Organisation
Daniel James Resourcing Ltd
Location
United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
role is well suited to someone who wants to remain technically hands-on while gradually taking on broader ownership and leadership responsibility. The role Design, build and extend backend systems using TypeScript and modern serverless patterns Develop and maintain APIs and integrations that power customer-facing and internal platforms … engineers to deliver end-to-end features Contribute to internal automation tools and operational workflows Balance rapid delivery with reliability, performance and maintainable system design About you 5+ years professional experience in backend or full-stack engineering Strong proficiency in TypeScript in production environments Solid understanding of API ...

Business Analyst

Hiring Organisation
Horwich Farrelly
Location
Salford, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
with business objectives. Map as-is and to-be processes, identifying automation opportunities and efficiency gains. Collaborate with developers and testers on data flows, API contracts, and test coverage. Support backlog refinement and prioritisation, ensuring stories are ready for sprint planning. Contribute to UX validation and user journey mapping … Azure AI/OpenAI. Experience with insurance or legal processes. Familiarity with Azure Dev Ops for capturing epics, features and user stories. Understanding of API design and basic technical concepts. About the team Robert Buxton, Product Owner, shares his perspective: "This BA role is all about bridging ...

SAP Architect CoE IT

Hiring Organisation
AT&S Austria Technologie & Systemtechnik AG
Location
Leoben, Steiermark, Austria
Employment Type
Permanent
Salary
EUR Annual
seamless integration across domains with a strong focus on SAP architecture. Aufgaben 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 ...

AI Systems Architect

Hiring Organisation
Adria Solutions
Location
Winsford, Cheshire, North West, United Kingdom
Employment Type
Permanent
term progression for the right individual. The Role This position sits at the intersection of systems architecture, backend engineering, and platform reliability. You will design and build the infrastructure that connects distributed edge environments with backend services, ensuring systems are scalable, observable, and robust in production. The role … problems rather than operating purely at a conceptual level. Key Responsibilities Own and evolve end-to-end system architecture across edge and backend environments Design and build backend services and APIs using Go and Python Develop scalable data ingestion, messaging, and telemetry pipelines Support containerised deployments and system reliability ...

Senior Software Engineer

Hiring Organisation
ZEREN
Location
Greater London, England, United Kingdom
founding team Build technology that fundamentally changes how teams use data What We Are Looking For Strong experience building in Python Deep understanding of design patterns and system architecture Experience building scalable, performant platforms Strong grasp of event-driven systems and concurrency Solid database and API design … Have Zero-to-one product experience, including OSS or side projects Data engineering experience such as pipelines and analytics Experience integrating LLMs, including prompt design and understanding model capabilities Deeper cloud experience, especially with GCP Experience with Encore, though this is easy to pick up Ways of Working Ownership ...

Senior Software Engineer

Hiring Organisation
Formula Recruitment
Location
City of London, London, United Kingdom
maintainable code. This is an exciting opportunity to join collaborative and innovative startup with opportunities for professional growth and learning. What You’ll Do Design and develop high-throughput, low-latency APIs using Typescript/Node.js. Build and maintain real-time data ingestion and processing pipelines. Optimise backend services … delivery. Collaborate with front-end teams to power trading consoles and dashboards. Profile and tune Node.js applications for performance and memory efficiency. Ensure secure API design and compliance with data privacy regulations. Contribute to architecture discussions, code reviews, and documentation. Key requirements Strong experience with Node.js in production ...

React Frontend UI Developer - Fixed Income & Credit Trading

Hiring Organisation
Vertus Partners
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 - 100,000 Annual
modern, responsive trading tools, working closely with traders, quants, and Back End engineers to support Real Time decision-making and risk management. Key Responsibilities: Design and develop scalable UI applications for Fixed Income and credit trading desks Build Real Time, data-heavy interfaces using modern Front End technologies Partner … with traders to translate trading workflows into intuitive user experiences Collaborate with Back End teams on API design and performance optimisation Contribute to architectural decisions and UI standards across the platform Required Skills & Experience: Strong commercial experience with TypeScript, React, and modern JavaScript Proven background building data-intensive ...

Mid Laravel Software Engineer

Hiring Organisation
SystemsX
Location
Greater Cardiff Area, United Kingdom
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 ...

Android Technical Lead

Hiring Organisation
RealityMine
Location
Trafford Park, Greater Manchester, UK
Android apps and SDKs. The Role: This is a hands‐on role where you will: · Lead the technical direction for our Android solutions · Design and implement complex features, working with Kotlin, Java and C++/NDK to build reliable, high‐performance components · Stay ahead of Android OS & Google Play … changes and lead our response to them · Collaborate with product, data, and client teams to deliver robust solutions · Mentor other engineers, run design and code reviews, and champion best practices · Leverage and be open to AI-coding tools to increase productivity, reduce boilerplate and enhance code quality Our offices ...

Android Technical Lead

Hiring Organisation
RealityMine
Location
Trafford Park, England, United Kingdom
Android apps and SDKs. The Role: This is a hands‐on role where you will: · Lead the technical direction for our Android solutions · Design and implement complex features, working with Kotlin, Java and C++/NDK to build reliable, high‐performance components · Stay ahead of Android OS & Google Play … changes and lead our response to them · Collaborate with product, data, and client teams to deliver robust solutions · Mentor other engineers, run design and code reviews, and champion best practices · Leverage and be open to AI-coding tools to increase productivity, reduce boilerplate and enhance code quality Our offices ...

Technical Data Architect

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £95,000 per annum
digital content platform, shaping cloud infrastructure, data models, integrations, APIs and security across the solution. You'll work closely with the platform provider to design and govern a scalable architecture built on modern cloud services such as AWS, Azure or GCP, ensuring reliability, performance and compliance. A key responsibility … schemas and metadata structures, partnering with Solutions Architects to ensure all onboarding aligns with industry best practices. You'll champion best-practice patterns across API design, integration layers, authentication, data pipelines and cloud-native services, with hands-on involvement in troubleshooting and implementation support. The role also produces ...

Lead AI Automation Engineer

Hiring Organisation
BD Talent Limited
Location
Warrington, Cheshire, North West, United Kingdom
Employment Type
Permanent
Salary
£65,000
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 ...

IT Integration Architect

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£95,000
that supports business critical functions across the business. My client have migrated significant services to the cloud and now requires a lead architect to design and build the next generation of solutions including core finance and HR technology landscape, automating data flows, integrating systems, supporting in the delivery … real-time reporting and analysis, whilst driving a more mature awareness to data architecture and governance across the business. Responsibilities: - Lead the design and delivery of integrations across technology platforms and solutions. - Produce architectural documentation (HLDs, LLDs, diagrams, support guides). - Ownership of integration and application architecture in alignment ...

Product Engineer

Hiring Organisation
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Location
London Area, United Kingdom
product managers, engineers, and end users to understand new customer use cases Turn those use cases into reusable platform capabilities , rather than bespoke solutions Design and build scalable data models, workflows, and abstractions that work across multiple customers Build and extend AI-enabled workflows as part of the core … fully specified Nice to Have (Not Essential) Experience with modern data platforms (e.g. Databricks, Snowflake, dbt, Airflow, Foundry) Some exposure to backend development or API design TypeScript experience Familiarity with enterprise systems (ERP, CRM, etc.) Exposure to AI-enabled systems , generative AI, or workflow orchestration ...

Senior Android Engineer - Hybrid, £100K

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
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 ...

Junior Full Stack Developer

Hiring Organisation
Proactive Appointments
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£30,000 - £38,000 per annum
/Junior Full Stack Developer to join their team on a permanent basis. This role focuses on building and optimising JavaScript applications with strong API design and architecture. If you’re passionate about technology and continuous learning, the organisation can offer excellent career growth, competitive compensation, and great ...

CTO

Hiring Organisation
Leo Technology
Location
Petersfield, Hampshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Seed to Series A) Hands-on expertise with OpenAI integrations or other LLM-based solutions Technical experience with Node.js, Python, and SQL Experience with API design and development for both internal and external use cases Knowledge of ISO/compliance Experience designing and scaling data pipelines and working ...

Senior Software Developer

Hiring Organisation
Reed
Location
Holborn, London, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum, Inc benefits
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 ...

VP of AI Platform Engineering

Hiring Organisation
Wenham Carter
Location
England, United Kingdom
lead the technical strategy to embed AI-driven orchestration across their software portfolio. This is a hands-on senior leadership role: you will design the platform, own non-functional requirements (reliability, security, scalability, compliance), drive adoption internally and externally, and build a small, high-performing global team that moves … start-up mentality. What you’ll do Define and deliver the Core AI Services platform (orchestration, APIs, SDKs, integration toolkits). Lead the design and delivery of AI-driven orchestration layers across the software portfolio. Own platform non-functional attributes: security, reliability, availability, compliance, and global scale. Lower barriers ...

Security Architect

Hiring Organisation
Macildowie Recruitment and Retention
Location
Solihull, West Midlands, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £82,000 per annum
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 ...

Senior Fullstack Engineer, Angular & NestJS (DeFi Wallet) (m/f/d)

Hiring Organisation
Bitpanda GmbH
Location
Wien, Austria
Employment Type
Permanent
Salary
EUR Annual
bring familiarity with smart contract development, hosting cryptonodes, Viem/Ethers.js, RPCs, or third-party blockchain data providers. Experienced with technologies such as Nest.js, API design, Kafka, Redis, PostgreSQL, Prisma, and/or reactive programming with RxJS; or, on the frontend side, frameworks like Ionic or Angular. Eager ...

Mulesoft Developer

Hiring Organisation
Bridge Recruitment UK Limited
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
Salesforce MuleSoft Developer (Hybrid Role) Were looking for an experienced Salesforce MuleSoft Developer to design, build, and maintain integrations between Salesforce and external systems. Youll work closely with cross-functional teams to deliver scalable, high-performance integration solutions aligned with business needs. What youll do: Design, develop, test … 3+ years Salesforce experience Strong background in software development and OOP Hands-on MuleSoft & Salesforce integration experience MuleSoft certification(s) Solid understanding of API design and integration best practices Bachelors degree in Computer Science, Engineering, or related field Salesforce ecosystem experience is a strong plus. ...

Backend Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £80,000 per annum
TypeScript will be valuable for occasional UI enhancements and bridging front-end requirements. Collaboration with cross-functional teams to implement best practices in API design, security, and performance tuning will be central to success. Additionally, you'll contribute to code reviews, documentation, and continuous improvement initiatives to maintain ...

Mid-Level Developer (Solo Lead)

Hiring Organisation
Anson McCade
Location
England, United Kingdom
platforms or tools, even if you have not used Nordcraft or Xano previously. • Solid understanding of core web development concepts, including security, performance, and API design. • Comfortable working as the sole engineer on a product while collaborating closely and communicating regularly with non-technical co-founders. • Experience working remotely ...