javascript developer react jobs in Antrim County

C# Developer / Full Stack Engineer (.Net Core JavaScript) St Albans / WFH to £100k Do you have expertise with C# .Net backend development combined with JavaScript skills? You could be progressing your career in a senior hands-on role at a technology driven trading company that invest in Sports betting markets with a flat structure where you will get your voice heard and can make a real impact...

About Us: We're a forward-thinking technology company building innovative web solutions using modern development practices. Our team values continuous learning, collaboration, and cutting-edge technology to create exceptional digital experiences. Position Summary: We're seeking an enthusiastic Entry-Level JavaScript Developer to join our dynamic team on a contract basis. This is an excellent...

You must speak, write and be able to understand fluent English. - Deep knowledge and regular usage of Firebase suite, especially Firestore. - Strong proficiency in TypeScript and modern JavaScript (ES6+).

You must enjoy constantly learning and researching to improve your level of expertise.

Position: Front End JavaScript Developer Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday – Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date: ASAP Purpose of the role: As a Front End Developer you will join one of our multinational Scrum teams to create state-of-the-art software solutions. In all...

We are currently recruiting full stack developers to join a trading technology team at a leading investment firm. This team is responsible for building a new front-office trading platform used directly by traders and quants. These roles are best suited for candidates with experience in full stack development using React and Python and particularly those who have built trading platforms from the...

You will be a great fit if you: - Have 5+ years full-stack experience, with strong JavaScript/TypeScript depth. - Are backend-leaning, with deep Node. js and API experience. - Have previously worked in early-stage start-ups or very lean engineering teams. - Have extensive evidence of being a hands-on individual contributor in complex codebases.

You will be expected to: ● Develop new features working with the data science ● Develop bug fixes and security patches promptly

You must be able to demonstrate the following: ● 6+ years experience full-stack development ● High proficiency with Typescript, React, Next, Azure, Pulumi and Node

Frontend Developer - React / TypeScript About the Role We're partnered with a well-established SaaS company delivering innovative Business solutions to customers across the UK, Ireland and beyond. The team has built a reputation for exceptional customer service, technical excellence, and a genuine commitment to work-life balance. They're now looking for a Frontend Developer (React) to join their...

React Software Engineer - Multiple Roles (Junior to Senior) Want to work on cutting-edge projects with a team that loves clean, modern front-end engineering? Looking for a place where you'll actually see your work go live and make an impact? How about joining a team that values learning, collaboration, and innovation - not red tape? The Role You'll be developing high-quality, performant React...

About Aero A digital experience company, we sit at the intersection of insights, creativity and technology, crafting digital experiences that transform business performance. We’re a small, fully remote team with big ambitions. We work hands-on with our clients, giving our teams genuine ownership of their work. Every project you touch will be seen by thousands of people and will directly...

NodeJS JavaScript Developer - AI & ML Role: Senior or Lead NodeJS Engineer Location: Belfast - 2-3 days per week Salary: Up to £90,000 NodeJS Engineer that would like to work at the forefront of AI integration & Edge deployments? Want to work as part of a team that is developing LLM & SLM capabilities and platforms for mission-critical projects across finance, energy & Defence? We're...

UX/UI + Frontend Developer Thursday Salary: £40-£50K Thursday is a singles IRL events company that organises singles events, trips, dinners, activities, education and media. We're building technology to scale our operations and enhance the experience for our members. We value equality and inclusion as core principles - our diverse audience deserves technology that serves everyone well, and...

React / Next.js Developer – Contract (Outside IR35) 📍 Location: Remote (UK-based preferred) 📅 Contract Length: 2 months 💼 Contract Type: Outside IR35 💰 Rate: £300 per day 🚀 Start: ASAP Overview We’re looking for an experienced React / Next.js Developer to join us on a short-term contract to help deliver and enhance a modern, high-performance web application. You’ll be working closely with...

THE OPPORTUNITY Inspiring Teachers is an evidence-driven nonprofit working to expand access to quality education. We are building tools for managing large-scale foundational learning programs in Sub-Saharan Africa. Our approach enhances structured pedagogy with technology to enable data-driven teacher support that improves learning outcomes. Today we have programs in Ghana, Uganda and Malawi,...

Job Description 💻: GIS Development 🏢: Leading Global Marine Company 🍃: Offshore Wind 📌: Remote - 1 trip per month to the office An established geoscience and offshore energy consultancy is looking for a Geospatial Developer to join its UK-based team, with opportunities to work from Newcastle, Aberdeen, Glasgow or London 🌍 This role is ideal for someone who enjoys turning complex spatial...

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...

You will be a great fit if you: - Have 5+ years full-stack experience, with strong JavaScript/TypeScript depth. - Are backend-leaning, with deep Node. js and API experience. - Have previously worked in early-stage start-ups or very lean engineering teams. - Have extensive evidence of being a hands-on individual contributor in complex codebases.

You will own frontend architecture, build scalable component libraries, and shape modern UI engineering practices within a growing, product led organisation. The role is remote first, offering flexibility while maintaining strong collaboration across product, UX, and engineering teams.

You will lead the evolution of a large scale React codebase used across multiple product lines.

Full Stack Engineer (JavaScript) – Tech Start-Up Remote (UK-based only) | Flexible Hours c£90k + Benefits (Pension, Private Healthcare, Death-in-Service, Equity Potential) We’re looking for a senior, backend-leaning Full Stack Engineer who thrives in the controlled chaos of a true early-stage start-up, the kind where there’s no QA team, no DevOps team, no predefined frameworks, no hand-holding ,...

You will collaborate with our engineering team to build innovative, high-performance user interfaces using modern frontend technologies such as React, WebGL, and TypeScript. Responsibilities: Develop and maintain high-quality frontend applications using React and TypeScript.