351 to 375 of 506 API Development Jobs in the UK excluding London

clients Professional handling of difficult client communications for specific issues Being able to define and oversee the technical implementation of a client project Requirements You have strong knowledge of API development using Kotlin, including ORM frameworks, authorization/authentication and instrumentation You actively facilitate and encourage knowledge sharing within the team and wider department You advocate for best More ❯

clients Professional handling of difficult client communications for specific issues Being able to define and oversee the technical implementation of a client project Requirements You have strong knowledge of API development using Kotlin, including ORM frameworks, authorization/authentication and instrumentation You actively facilitate and encourage knowledge sharing within the team and wider department You advocate for best More ❯

clients Professional handling of difficult client communications for specific issues Being able to define and oversee the technical implementation of a client project Requirements You have strong knowledge of API development using Kotlin, including ORM frameworks, authorization/authentication and instrumentation You actively facilitate and encourage knowledge sharing within the team and wider department You advocate for best More ❯

to feedback and willing to learn. Junior UI/UX Engineer Responsibilities Build and maintain reusable UI components. Implement designs in React based on wireframes. Collaborate with data and API developers. Monitor and maintain existing client dashboards. Capabilities 2+ years relevant work experience. Basic experience in JavaScript, HTML/CSS, and React. Experience with dashboarding libraries, in particular QuickSight. More ❯

to feedback and willing to learn. Junior UI/UX Engineer Responsibilities Build and maintain reusable UI components. Implement designs in React based on wireframes. Collaborate with data and API developers. Monitor and maintain existing client dashboards. Capabilities 2+ years relevant work experience. Basic experience in JavaScript, HTML/CSS, and React. Experience with dashboarding libraries, in particular QuickSight. More ❯

to feedback, and willing to learn. Junior UI/UX Engineer Responsibilities Build and maintain reusable UI components. Implement designs in React based on wireframes. Collaborate with data and API developers. Monitor and maintain existing client dashboards. Capabilities 2+ years relevant work experience. Basic experience in JavaScript, HTML/CSS, and React. Experience with dashboarding libraries, in particular QuickSight. More ❯

and willing to learn. Responsibilities and Capabilities Junior UI/UX Engineer Build and maintain reusable UI components. Implement designs in React based on wireframes. Collaborate with data and API developers. Monitor and maintain existing client dashboards. Capabilities: 2+ years relevant work experience. Basic experience in JavaScript, HTML/CSS, and React. Experience with dashboarding libraries, in particular QuickSight. More ❯

to feedback, and willing to learn. Junior UI/UX Engineer Responsibilities Build and maintain reusable UI components. Implement designs in React based on wireframes. Collaborate with data and API developers. Monitor and maintain existing client dashboards. Capabilities 2+ years relevant work experience. Basic experience in JavaScript, HTML/CSS, and React. Experience with dashboarding libraries, in particular QuickSight. More ❯

technologies What We're Looking For: Proven experience as a Solution Architect or Solution Designer Strong background in systems architecture, software design, and data modelling Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP Excellent communication and stakeholder management skills Strategic thinker with a collaborative mindset and strong attention More ❯

with some PHP, whos passionate about building powerful systems, automating workflows, and turning ideas into real-world solutions. This is a standalone role where you will be the sole development expert and have a key responsibility in generating ROI from the work that you do. You will be an integral part of the business as they aim to drive … increased revenue and workflow from your ideas Responsibilities Microsoft 365 Platform Development: Enhance and expand their use of Dynamics 365, integrating it with their software via APIs. Data Visualization: Build interactive dashboards and heat maps using Power BI to visualize global activity. Automation & Integration: Sync Dynamics with various internal applications and automate credit checks, customer alerts, and marketing workflows. … AI & Algorithmic Triggers: Develop smart alerts based on customer behavior trends. Web Development: Improve and expand their web-based quoting tools and plugins. API Development: Connect with global data sources like currency rates, oil prices, and freight indices. Skills Proficiency in SQL and PHP Experience with Microsoft Dynamics 365, Power BI, and .Net Strong understanding of API More ❯

Reference: 5e1215c48b22 Job Views: 4 Posted: 25.06.2025 Expiry Date: 09.08.2025 col-wide Job Description: Data Engineer - Hybrid/Bristol - Up to £55, Job Title : Data Engineer Responsibilities : - Pipeline Development and Optimisation : Continuously assess and improve the performance of data enrichment pipelines, ensuring their efficiency, dependability, and scalability. - Data Management : Design and implement robust processes for data ingestion and … cleaning, supporting machine learning and analytical models. - Collaborative Problem-Solving : Work closely with data scientists to troubleshoot, identify, and resolve complex issues, ensuring smooth operations across the board. - Model Development and Deployment : Assist in building, training, monitoring, and deploying cutting-edge machine learning models. - Stay Current with AI/ML Trends : Keep up to date with the latest advancements … in data processing, AI, and ML, and incorporate them into our client's processes to improve efficiency. - Adaptable Approach : Collaborate across different functions as required, including taking on backend development tasks like API creation with support from more senior engineers. Our client, a leading player in the risk industry, is seeking a skilled and motivated Data Engineer to More ❯

scalable and data-driven. Responsibilities: Design and develop robust APIs to enable seamless data exchange and integration between systems. Create clear documentation and guidelines to support consistent and effective API usage. Collaborate with stakeholders to gather requirements and deliver secure, real-time integration solutions. Ensure data accuracy and compliance through proper mapping, transformation, version control, and adherence to privacy … standards. Support continuous improvement by resolving issues promptly, sharing best practices, and contributing to team learning and ad hoc tasks. Skills & Experience: Previous experience in integration development Strong skills in API design and development Hands-on experience with Microsoft Azure Ability to work independently and manage tasks proactively Excellent communication skills, both written and verbal Strong documentation More ❯

Avanti Recruitment is partnering with a Sheffield-based software development company with over 20 years of expertise building operational systems for secure and specialist environments. Their technology is used in critical, real-world settings with long-term client relationships built on tailored solutions. You'll join their development team to lead the modernisation of their core booking and … migrating from .NET Framework and legacy VB.NET to modern .NET Core. This system is central to their business operations, making this a high-impact role from day one. Technical Development: Migrate core systems from .NET Framework/VB.NET to .NET Core Develop bespoke software solutions using .NET and C# Build APIs and integrate with existing operational systems Client Interaction … and clarify requirements Collaborate throughout the full software lifecycle from proposals to deployment Write documentation and coordinate release management Essential Skills Strong .NET and C# experience SQL Server proficiency API development experience UK Driving License and vehicle access Eligible for UK Government SC Clearance Desirable Skills Angular or Node.js exposure Azure cloud experience VB.NET knowledge (helpful for migration More ❯

Avanti Recruitment is partnering with a Sheffield-based software development company with over 20 years of expertise building operational systems for secure and specialist environments. Their technology is used in critical, real-world settings with long-term client relationships built on tailored solutions. You'll join their development team to lead the modernisation of their core booking and … migrating from .NET Framework and legacy VB.NET to modern .NET Core. This system is central to their business operations, making this a high-impact role from day one. Technical Development: Migrate core systems from .NET Framework/VB.NET to .NET Core Develop bespoke software solutions using .NET and C# Build APIs and integrate with existing operational systems Client Interaction … and clarify requirements Collaborate throughout the full software lifecycle from proposals to deployment Write documentation and coordinate release management Essential Skills Strong .NET and C# experience SQL Server proficiency API development experience UK Driving License and vehicle access Eligible for UK Government SC Clearance Desirable Skills Angular or Node.js exposure Azure cloud experience VB.NET knowledge (helpful for migration More ❯

background, able to maintain change backlog and work as part of a wider team to deliver against the Change agenda. What we’re looking for: Proven experience in Agile Development Environment Thorough understanding of full end-to-end SDLC Good skills and knowledge of servant leadership, facilitation, situational awareness, conflict resolution, continual improvement, empowerment, and increasing transparency Key Accountabilities … and Consumers Liaising and working closely with Project Managers or Product Owners, keeping them updated on progress against milestones, risks, issues, and budget control Providing input to the technical development approach of a project, balancing cost, time, quality, and risk Assisting in the identification, management, and resolution of technical Risks, Assumptions, Issues, and Dependencies (RAIDs) Essential Skills/Basic … and integrated architectures Hands-on technical experience building/implementing software Experience of working in Financial Services Skills that will help you in the role: End-to-end software development lifecycle Awareness of leading-edge tools, techniques, and services within IT Software development with technologies such as Databases (Oracle/DB2/SQL/IMS DEDB), Webservices (WSDL More ❯

exceptional opportunity to join an innovative, high-growth organisation shaping the future of AI-powered automation and digital interaction. We're seeking a Machine Learning Engineer with full-stack development experience to work on cutting-edge projects involving Generative AI , Retrieval-Augmented Generation (RAG) , and multi-agent reasoning frameworks . This is a hands-on, end-to-end engineering … Flask) and integrate with React, TypeScript, Node.js Vector Search: Use FAISS, Weaviate, Pinecone, ChromaDB, OpenSearch Required skills & experience: 3-5+ years of experience in ML engineering and software development Deep Python proficiency, with PyTorch, TensorFlow or Hugging Face Proven experience with LLMs, RAG, and deploying cloud-native AI on AWS Strong full-stack skills (React, TypeScript, Node.js) and … API development Familiarity with vector databases and multi-agent frameworks Apply now to join this high growth and award-winning organisation with the opportunity to be part of building the future of AI driven projects and solutions. The role offers a highly competitive salary and benefits package and will be office based in Manchester. INDAMS More ❯

with the ability to communicate and collaborate effectively with both technical and functional stakeholders. This role is pivotal in enabling long-term self-sufficiency for the client's Workday development capability and will also include a strong mentorship component, where the candidate will work closely with internal teams to guide them on Workday Extend best practices. Essential skills/… Experience with Object-Oriented Programming (OOP) concepts and JavaScript or a similar language. * Familiarity with Workday security model, including domain and business process security policies. * Strong understanding of RESTful API development and web service integration. * Effective communication and documentation skills, especially in mentoring or training settings. * Strong analytical and problem-solving abilities in a collaborative, fast-paced environment. More ❯

exceptional opportunity to join an innovative, high-growth organisation shaping the future of AI-powered automation and digital interaction. We're seeking a Machine Learning Engineer with full-stack development experience to work on cutting-edge projects involving Generative AI , Retrieval-Augmented Generation (RAG) , and multi-agent reasoning frameworks . This is a hands-on, end-to-end engineering … Flask) and integrate with React, TypeScript, Node.js Vector Search: Use FAISS, Weaviate, Pinecone, ChromaDB, OpenSearch Required skills & experience: 3-5+ years of experience in ML engineering and software development Deep Python proficiency, with PyTorch, TensorFlow or Hugging Face Proven experience with LLMs, RAG, and deploying cloud-native AI on AWS Strong full-stack skills (React, TypeScript, Node.js) and … API development Familiarity with vector databases and multi-agent frameworks Apply now to join this high growth and award-winning organisation with the opportunity to be part of building the future of AI driven projects and solutions. The role offers a highly competitive salary and benefits package and will be office based in Manchester. INDAMS More ❯

Java, Scala and Kotlin Software Engineering Java, Kotlin and Scala are three of the most powerful and versatile programming languages in the modern software development ecosystem. Known for their scalability, performance, and robustness, these languages are widely adopted across a variety of platforms from backend services and enterprise applications and cloud-based solutions. With the rise of JVM-based … languages in both legacy and cutting-edge environments, demand for talent in this space continues to grow. JVM supports a broad spectrum of development scenarios, making it a powerful choice for modern software engineering. It is widely used for backend microservices and API development, cloud-native application development, big data processing and stream analytics, as well More ❯

database, middleware and web solutions that underpin critical areas such as Sales, Finance, Operations and Service Management. Working closely with our Architecture/Design team you will ensure that development work is completed in line with the core principles outlined in our IT Strategy and Release Management Processes Supporting the Solution Architects by inputting into the solution design process … Working closely with Business Analysts, Testers and other stakeholders during the development life cycle Developing a range of solutions across our web application, database, and middleware estate Joining daily stand ups and sprint planning/review sessions Testing - unit testing and peer review We'd love you to have 5+ years experience with C#, MVC including RESTful API development and consumption with JSON 3+ years experience within SOA/API architecture Entity Framework 3+ years experience working with T-SQL We also acknowledgethattheconfidencegap and imposter syndrome are a real thing andcanget in thewayof us meeting fantastic talent, so please don't hesitate to apply - we would love to hear from you! Work in a way More ❯

database, middleware and web solutions that underpin critical areas such as Sales, Finance, Operations and Service Management. Working closely with our Architecture/Design team you will ensure that development work is completed in line with the core principles outlined in our IT Strategy and Release Management Processes Supporting the Solution Architects by inputting into the solution design process … Working closely with Business Analysts, Testers and other stakeholders during the development life cycle Developing a range of solutions across our web application, database, and middleware estate Joining daily stand ups and sprint planning/review sessions Testing - unit testing and peer review We'd love you to have 5+ years experience with C#, MVC including RESTful API development and consumption with JSON 3+ years experience within SOA/API architecture Entity Framework 3+ years experience working with T-SQL We also acknowledgethattheconfidencegap and imposter syndrome are a real thing andcanget in thewayof us meeting fantastic talent, so please don't hesitate to apply - we would love to hear from you! Work in a way More ❯

database, middleware and web solutions that underpin critical areas such as Sales, Finance, Operations and Service Management. Working closely with our Architecture/Design team you will ensure that development work is completed in line with the core principles outlined in our IT Strategy and Release Management Processes Supporting the Solution Architects by inputting into the solution design process … Working closely with Business Analysts, Testers and other stakeholders during the development life cycle Developing a range of solutions across our web application, database, and middleware estate Joining daily stand ups and sprint planning/review sessions Testing - unit testing and peer review We'd love you to have 5+ years experience with C#, MVC including RESTful API development and consumption with JSON 3+ years experience within SOA/API architecture Entity Framework 3+ years experience working with T-SQL We also acknowledgethattheconfidencegap and imposter syndrome are a real thing andcanget in thewayof us meeting fantastic talent, so please don't hesitate to apply - we would love to hear from you! Work in a way More ❯

database, middleware and web solutions that underpin critical areas such as Sales, Finance, Operations and Service Management. Working closely with our Architecture/Design team you will ensure that development work is completed in line with the core principles outlined in our IT Strategy and Release Management Processes Supporting the Solution Architects by inputting into the solution design process … Working closely with Business Analysts, Testers and other stakeholders during the development life cycle Developing a range of solutions across our web application, database, and middleware estate Joining daily stand ups and sprint planning/review sessions Testing - unit testing and peer review We'd love you to have 5+ years experience with C#, MVC including RESTful API development and consumption with JSON 3+ years experience within SOA/API architecture Entity Framework 3+ years experience working with T-SQL We also acknowledgethattheconfidencegap and imposter syndrome are a real thing andcanget in thewayof us meeting fantastic talent, so please don't hesitate to apply - we would love to hear from you! Work in a way More ❯

the-art generative AI, retrieval-augmented generation (RAG), and reasoning frameworks to build intelligent and context-aware systems. We are seeking talented Machine Learning Engineers with full-stack software development experience to join our client's team and help shape the future of AI-powered automation. Within this dynamic role varied duties will include: Search relevancy engineering. Conversational AI … Development : Design, train, fine-tune, and deploy LLMs with reasoning capabilities. Retrieval-Augmented Generation (RAG): Implement, optimise, and scale RAG pipelines for effective information retrieval from structured and unstructured sources. Model Fine-Tuning & Training : Train domain-specific models using techniques like LoRA, QLoRA, PEFT, reinforcement learning, and supervised fine-tuning (SFT). Model Deployment & Inferencing : Optimise model serving and … AutoGen, and DSPy. AWS Cloud & MLOps: Deploy scalable machine learning workloads on AWS using services like SageMaker, Bedrock, Lambda, S3, DynamoDB, ECS, and EKS. End-to-End AI Product Development : Work across the full ML lifecycle, from data collection and preprocessing to model evaluation, deployment, and monitoring. Full-Stack Integration : Develop APIs and integrate ML models into web applications More ❯

the-art generative AI, retrieval-augmented generation (RAG), and reasoning frameworks to build intelligent and context-aware systems. We are seeking talented Machine Learning Engineers with full-stack software development experience to join our client's team and help shape the future of AI-powered automation. Within this dynamic role varied duties will include: Search relevancy engineering. Conversational AI … Development : Design, train, fine-tune, and deploy LLMs with reasoning capabilities. Retrieval-Augmented Generation (RAG): Implement, optimise, and scale RAG pipelines for effective information retrieval from structured and unstructured sources. Model Fine-Tuning & Training : Train domain-specific models using techniques like LoRA, QLoRA, PEFT, reinforcement learning, and supervised fine-tuning (SFT). Model Deployment & Inferencing : Optimise model serving and … AutoGen, and DSPy. AWS Cloud & MLOps: Deploy scalable machine learning workloads on AWS using services like SageMaker, Bedrock, Lambda, S3, DynamoDB, ECS, and EKS. End-to-End AI Product Development : Work across the full ML lifecycle, from data collection and preprocessing to model evaluation, deployment, and monitoring. Full-Stack Integration : Develop APIs and integrate ML models into web applications More ❯