7 contract full stack javascript developer jobs found

🚀 Contract Full-Stack JavaScript Developer (AI Platform) 📍 Location: 3 days per week in London Office 📆 Duration: 4 weeks with a longer term extension afterwards. 💼 IR35 Status: Outside IR35 💰 Rate: £500p/d – £600p/d Opus is partnering with a cutting-edge FinTech start-up to secure a Contract Full-Stack JavaScript Developer . You’ll be joining a small, high-calibre team building a platform to improve workflows within the the FinTech space. They have a genuinely interesting problem at the intersection of frontend engineering, backend systems, and applied LLM tooling . This is a true 0–1 build , ideal if you enjoy ownership, clean abstractions, and shipping product quickly. 🧠 What You’ll Be Working On Building and extending agent-driven workflows. Developing context management and LLM entry points. Only application-layer LLM integrations, not model training) Expanding slide generation functions and data structures. Full-stack feature...

🚀  Contract Full-Stack JavaScript Developer (AI Platform) 📍  Location:  3 days per week in London Office 📆  Duration:  4 weeks with a longer term extension afterwards. 💼  IR35 Status:  Outside IR35 💰  Rate:  £500p/d – £600p/d Opus is partnering with a cutting-edge  FinTech start-up  to secure a  Contract Full-Stack JavaScript Developer . You’ll be joining a small, high-calibre team building a platform to improve workflows within the the FinTech space. They have a genuinely interesting problem at the intersection of  frontend engineering, backend systems, and applied LLM tooling . This is a  true 0–1 build , ideal if you enjoy ownership, clean abstractions, and shipping product quickly. 🧠 What You’ll Be Working On Building and extending  agent-driven workflows. Developing  context management and LLM entry points.  Only application-layer LLM integrations, not model training) Expanding  slide generation functions and data structures. Full-stack feature development, with a...

Contract Full-Stack JavaScript Developer (AI Platform) Location: 3 days per week in London Office Duration: 4 weeks with a longer term extension afterwards. IR35 Status: Outside IR35 Rate: £500p/d - £600p/d Opus is partnering with a cutting-edge FinTech start-up to secure a Contract Full-Stack JavaScript Developer . You'll be joining a small, high-calibre team building a platform to improve workflows within the FinTech space. They have a genuinely interesting problem at the intersection of Front End engineering, Back End systems, and applied LLM tooling . This is a true 0-1 build , ideal if you enjoy ownership, clean abstractions, and shipping product quickly. What You'll Be Working On Building and extending agent-driven workflows. Developing context management and LLM entry points. Only application-layer LLM integrations, not model training) Expanding slide generation functions and data structures. Full-stack feature development, with a Front...

🚀 Contract Full-Stack JavaScript Developer 📍 Location: Fully Remote 📆 Duration: 6 Months 💼 IR35 Status: Outside IR35 💰 Rate: £500p/d - £600p/d Opus is partnering with a FinTech start-up to secure a Contract Full-Stack JavaScript Developer. You will be working in a small team to build the product from 0-1. If you're passionate about clean code, scalable architecture, and modern tooling. 🛠️ Tech Stack React.js Next.js Node.js TypeScript AWS Terraform 📩 Interested? Apply now or send your latest CV to matthew.carter@opusrs.com ASAP! If you haven’t heard back within 48 hours, please assume your application was not successful this time.

Dynamics 365 CRM & Business Central Developer | £450 - £500 We're working with a rapidly expanding UK IT Managed Services Provider that is heavily investing in the automation of their internal ecosystem on this exciting opportunity. This is a high-impact contract role where you will bridge the gap between CRM and Business Central to drive operational excellence. As a key technical figure, you will be responsible for re-engineering the internal Dynamics environment, ensuring seamless workflows and robust data flow across the business. You’ll leverage the full Power Platform stack to turn a core platform into a powerful automation engine. The Role Lead the stabilization and technical improvement of the Dynamics 365 CRM platform to support business growth. Design and deliver complex integrations between Dynamics 365 Sales/Service and Dynamics 365 Business Central. Build and deploy advanced automations using Power Automate to streamline the end-to-end customer...

I am currently working with an exciting AI focused business who are looking for a Full Stack Developer to join their UK team. Role: Full Stack Developer Location: Fully Remote (UK) Contract: 12 Months Day Rate: £500 – £600 per day IR35 Status: Outside IR35 Key Responsibilities Develop and manage applications end-to-end, from design through to deployment Work closely with product and design teams to translate Figma/Sketch designs into production-ready applications Build and maintain scalable microservices-based systems Contribute to system architecture and scalability planning Support integration with third-party systems and services Participate in deployment and infrastructure design Technical Requirements Frontend React.js JavaScript / TypeScript (strong preference for TypeScript) Backend Python or NestJS Strong backend engineering capability (preferred focus) If keen please apply!

Dynamics 365 CRM & Business Central Developer | £450 - £500 We're working with a rapidly expanding UK IT Managed Services Provider that is heavily investing in the automation of their internal ecosystem on this exciting opportunity. This is a high-impact contract role where you will bridge the gap between CRM and Business Central to drive operational excellence. As a key technical figure, you will be responsible for re-engineering the internal Dynamics environment, ensuring seamless workflows and robust data flow across the business. You’ll leverage the full Power Platform stack to turn a core platform into a powerful automation engine. The Role Lead the stabilization and technical improvement of the Dynamics 365 CRM platform to support business growth. Design and deliver complex integrations between Dynamics 365 Sales/Service and Dynamics 365 Business Central. Build and deploy advanced automations using Power Automate to streamline the end-to-end customer...