12 of 12 Permanent API Integration Jobs in the East of England

Job Title: Ivalua Integration Functional Lead Clearance required: SC Duration: End of Dec 2025 Location: Preston, Frimley, London (2/3 Days a week) Job Description: Ivalua Integration Level 3 certified Experience in Ivalua integrations for Suppliers, Price Lists, PO's, Invoices as well as API integration to 3rd party risk providers Required to run integration workshops with relevant stakeholders, develop functional and technical design documentation and to build, test and deploy Ivalua integrations. More ❯

primarily Shopify-based) Develop bespoke Shopify apps or integrations where needed Own back-end architecture and server-side logic Scope and deliver third-party API integrations (REST and GraphQL) Write efficient, reusable, and testable code across multiple environments Collaborate with our design and marketing teams to align on performance More ❯

settings . Preferred Qualifications: Experience managing MLM or direct sales platforms . Background in inventory & order management for e-commerce brands. Working knowledge of API integrations & automation tools . USD salary or crypto: choose your own way of getting paid. More ❯

Position, where you will be: Designing and building innovative applications using the Microsoft Azure platform and .NET stack Working with C#/.Net, Azure, API's, Angular, JavaScript, SQL Engaging directly with clients to understand their needs and ensure project success Troubleshooting and resolving technical challenges across a range … of projects Contributing to the evolution of internal applications and services Tech Stack: Backend: .NET Framework, ASP.NET, C#, Azure, API integrations Frontend: Angular, JavaScript/TypeScript, HTML5, CSS Nice to have: SQL Server, CI/CD experience You'll Need To Be: A self-starter who's comfortable managing More ❯

software quality and performance Translating business requirements into robust technical solutions Optimising website performance for speed, SEO, and accessibility, including AI search and agent integration Managing routine updates, enhancements, and maintenance across all web properties Troubleshooting and resolving technical issues efficiently Ensuring mobile-friendly, cross-browser compatible solutions What … You should have: Essential Skills & Experience: Expertise in front-end technologies and modern JavaScript frameworks Experience in unit testing Experience with typescript Knowledge of API integrations and RESTful services Proficiency in building and maintaining CMS-driven websites Proven experience as a Senior Web Developer or in a similar role … abilities and attention to detail Excellent communication and teamwork skills Desirable Skills: Familiarity with Express.js, Turbo Repo, GitHub Actions, and MongoDB Experience with Continuous Integration/Continuous Deployment (CI/CD) Backend experience (such as Express.JS) Understanding of server-side rendering and static site generation If you're excited More ❯

software quality and performance Translating business requirements into robust technical solutions Optimising website performance for speed, SEO, and accessibility, including AI search and agent integration Managing routine updates, enhancements, and maintenance across all web properties Troubleshooting and resolving technical issues efficiently Ensuring mobile-friendly, cross-browser compatible solutions What … You should have: Essential Skills & Experience: Expertise in front-end technologies and modern JavaScript frameworks Experience in unit testing Experience with typescript Knowledge of API integrations and RESTful services Proficiency in building and maintaining CMS-driven websites Proven experience as a Senior Web Developer or in a similar role … abilities and attention to detail Excellent communication and teamwork skills Desirable Skills: Familiarity with Express.js, Turbo Repo, GitHub Actions, and MongoDB Experience with Continuous Integration/Continuous Deployment (CI/CD) Backend experience (such as Express.JS) Understanding of server-side rendering and static site generation If you're excited More ❯

software quality and performance Translating business requirements into robust technical solutions Optimising website performance for speed, SEO, and accessibility, including AI search and agent integration Managing routine updates, enhancements, and maintenance across all web properties Troubleshooting and resolving technical issues efficiently Ensuring mobile-friendly, cross-browser compatible solutions What … You should have: Essential Skills & Experience: Expertise in front-end technologies and modern JavaScript frameworks Experience in unit testing Experience with typescript Knowledge of API integrations and RESTful services Proficiency in building and maintaining CMS-driven websites Proven experience as a Senior Web Developer or in a similar role … abilities and attention to detail Excellent communication and teamwork skills Desirable Skills: Familiarity with Express.js, Turbo Repo, GitHub Actions, and MongoDB Experience with Continuous Integration/Continuous Deployment (CI/CD) Backend experience (such as Express.JS) Understanding of server-side rendering and static site generation If you're excited More ❯

software quality and performance Translating business requirements into robust technical solutions Optimising website performance for speed, SEO, and accessibility, including AI search and agent integration Managing routine updates, enhancements, and maintenance across all web properties Troubleshooting and resolving technical issues efficiently Ensuring mobile-friendly, cross-browser compatible solutions What … You should have: Essential Skills & Experience: Expertise in front-end technologies and modern JavaScript frameworks Experience in unit testing Experience with typescript Knowledge of API integrations and RESTful services Proficiency in building and maintaining CMS-driven websites Proven experience as a Senior Web Developer or in a similar role … abilities and attention to detail Excellent communication and teamwork skills Desirable Skills: Familiarity with Express.js, Turbo Repo, GitHub Actions, and MongoDB Experience with Continuous Integration/Continuous Deployment (CI/CD) Backend experience (such as Express.JS) Understanding of server-side rendering and static site generation If you're excited More ❯

software quality and performance Translating business requirements into robust technical solutions Optimising website performance for speed, SEO, and accessibility, including AI search and agent integration Managing routine updates, enhancements, and maintenance across all web properties Troubleshooting and resolving technical issues efficiently Ensuring mobile-friendly, cross-browser compatible solutions What … You should have: Essential Skills & Experience: Expertise in front-end technologies and modern JavaScript frameworks Experience in unit testing Experience with typescript Knowledge of API integrations and RESTful services Proficiency in building and maintaining CMS-driven websites Proven experience as a Senior Web Developer or in a similar role … abilities and attention to detail Excellent communication and teamwork skills Desirable Skills: Familiarity with Express.js, Turbo Repo, GitHub Actions, and MongoDB Experience with Continuous Integration/Continuous Deployment (CI/CD) Backend experience (such as Express.JS) Understanding of server-side rendering and static site generation If you're excited More ❯

environments. Requirements: Experience working as part of a cross-functional project team Hands-on experience as an architect building AWS cloud environments Experience with API integrations, Infrastructure as Code, and Integration Platform as Code Tech Stack: AWS Framework Principles, Terraform, EC2, S3, VPC, Lambda, IAM, Route 53, CloudWatch … CloudTrail Knowledge of integration tools is advantageous; Pharma/Research background is beneficial Experience with CI/CD pipelines and DevOps practices If this opportunity interests you, please feel free to reach out. More ❯

a team of cross-disciplined professionals driven each day by their desire to transform complex challenges into compelling solutions. Responsibilities: Develop and integrate custom API solutions for affiliate validation, SSN/EIN verification, and pricing adjustments. Implement commission tracking and distributor tier logic through API connections with InfoTrax … or external systems. Work on multi-currency and tax API adjustments for localized checkouts. Ensure secure data exchange between BigCommerce and third-party applications. Develop and maintain custom scripts for workflow automation . Requirements Required Skills: 3+ years experience in backend development with BigCommerce APIs . Strong knowledge of … Node.js, Python, PHP, or Ruby for API integrations. Experience working with RESTful APIs, GraphQL, and Webhooks . Hands-on experience integrating payment processors (Braintree, Adyen) and tax software (Avalara). Familiarity with authentication, security protocols, and fraud prevention . Preferred Qualifications: Experience working in MLM or commission-based eCommerce More ❯

improvement and innovation. • Collaborate with cross-functional teams to align marketing technology initiatives with broader business priorities. Platform Implementation • Oversee the selection, implementation, and integration of marketing technology platforms, including CRM, marketing automation, email marketing, social media, and analytics tools. • Ensure seamless data flow and integration between marketing … of marketing technology platforms and tools, including CRM, marketing automation, email marketing, social media, and analytics. • Strong technical skills in data management. • Experience with API integrations and data connectors. Strategic Thinking: • Ability to develop and execute a comprehensive marketing technology strategy aligned with business objectives. • Strong analytical and problem More ❯