React Jobs in Belfast

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React Jobs in Belfast

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Looking for top React jobs in Belfast? Haystack connects skilled React developers with exciting opportunities in Belfast’s growing tech scene. Explore the latest React developer roles and kickstart your career today!

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Principal Typescript Engineer (Full stack) x2

+11

Are you an engineering leader who wants to shape strategy, drive architectural direction, and deliver platforms that scale globally?Do you want the autonomy to influence technical vision while staying hands-on with modern engineering practices?My client is seeking a Principal Full-Stack Engineer to lead the technical direction of their platforms and elevate engineering standards across the organisation. This is a senior technical leadership role suited to someone with 8+ years’ experience, strong architectural instincts, and a proven ability to deliver high-impact solutions in complex environments.You’ll be operating at the intersection of strategy, architecture, and delivery-guiding teams, influencing design decisions, and ensuring that platforms evolve toward a modern, scalable, cloud-native target state.Role OverviewAs a Principal Engineer, you will:

Lead end-to-end delivery of complex, high-value features and services, ensuring they meet the highest performance, security, and reliability standards.

Shape architectural direction, driving best practices in system design, standardisation, and long-term technical evolution.

Mentor senior engineers, uplift engineering capability, and champion a culture of excellence and continuous improvement.

Translate business objectives into robust technical solutions, ensuring clarity, alignment, and challenge where needed.

Deliver consistently within a well-defined SDLC, promoting planning discipline, structured estimation, and quality-focused delivery.

Drive innovation through research, experimentation, and adoption of emerging technologies that support future platform growth.

This role offers significant technical influence, the opportunity to work on business-critical systems, and the ability to shape engineering strategy at an organisational level.Key Responsibilities

Define and communicate engineering standards and architectural principles across teams.

Lead architectural discussions, ensuring decisions align with long-term technical and business strategy.

Support teams in delivering high-quality, reusable services and components that scale across multiple projects.

Guide prioritisation and decomposition of work, ensuring delivery efficiency without compromising quality.

Champion test automation, measurement, and observability to support continuous improvement.

Promote high-quality documentation and clear communication across engineering and product teams.

Experience & Technical SkillsFrontend Development

Advanced proficiency in HTML5, CSS3, TypeScript, and modern JavaScript (ES6+).

Deep experience with the React ecosystem (React, Redux, React Query, GraphQL).

Strong understanding of responsive design, cross-browser compatibility, and frameworks such as Tailwind.

Skilled in API integration and Git-based workflows.

Backend Development

Expert experience in TypeScript across backend services.

Strong command of SQL and API development (REST & GraphQL).

Experience with microservices, containerised systems, and event-driven architectures (RabbitMQ, SOLACE, AMQP).

Comfortable with Linux shell scripting and Windows PowerShell.

Cloud & DevOps

Hands-on experience with AWS services and command-line tooling.

Strong understanding of CI/CD pipelines and Infrastructure as Code (Terraform).

Commitment to high coverage test suites (unit, integration, E2E).

Tooling & Collaboration

Experience with JIRA or similar Agile delivery tools.

Strong understanding of automated testing and modern CI practices.

Desired

Experience delivering solutions within regulated environments.

Understanding of capital markets, trading systems, and OTC products.

Familiarity with regulatory or platform-driven initiatives.

Open-source contributions or scripting experience (Python, Ruby, Perl) useful for workflow automation.

If you have any further questions on the role, please feel free to reach out to Brendan McCrory directly.Benefits: Work From Home

.Net Lead ( Scale Up )

+2

.NET LeadLocation: Belfast, Hybrid Type: Permanent Compensation: Competitive with bonus and benefitsAbout the CompanyA home-grown Northern Ireland success story in e-commerce technology, this organisation builds modern digital products that power convenience brands at serious scale. Their platforms underpin real supply chain and operational decision-making, supporting physical sites across the UK and beyond. The mission is simple: identify the pain, build the remedy, and scale it.Why This RoleThis is a chance to lead a small, high-performing .NET team shipping features used daily by real customers. Youll have ownership, clear product direction, and a leadership team that values pragmatic engineering and fast feedback loops. With the platform expanding into new customers and international markets, its an ideal time to join and influence the next chapter.What You Will DoLead, mentor, and develop a team of .NET engineers, setting standards and elevating engineering quality Design and build services powering ordering, payments, delivery workflows, and analytics Own technical decision-making across architecture, performance, reliability, and security Work closely with product, design, and data teams to translate operational problems into simple, effective software Champion clean code, automated testing, and continuous delivery practices Guide the platforms evolution towards modular, cloud-native architectures Review code, support career development, and contribute to hiring plans Collaborate with external stakeholders including retail partners and university research teamsTechnology EnvironmentC Sharp and .NET 6 or newer ASP.NET Core, Web APIs, background services SQL Server and modern ORM patterns; exposure to alternative datastores is beneficial Event-driven integrations, messaging, and queuing Azure preferred; AWS experience welcomed Docker, CI/CD pipelines, and Infrastructure as Code Frontend awareness for API design; React or similar is a plus Observability tooling: logging, metrics, alertingWhat You Will BringProven experience leading .NET engineering teams delivering production-grade systems Strong architectural capability spanning domain modelling, API design, and data design A history of improving code quality, reliability, and delivery flow Comfort working in a product-led environment with rapid iteration Excellent communication skills with both technical and non-technical stakeholders A passion for building software that solves real customer problemsNice to HavePayments, order orchestration, or logistics experience Knowledge of food safety or allergen information systems Awareness of compliance and regulated data handling Experience with cloud performance tuning and cost optimisationWhats On OfferMeaningful ownership of a live platform used at scale Progression path toward Engineering Manager or Architect Hybrid working from a modern Belfast office Dedicated training budget and time set aside for learning A supportive, delivery-focused culture that values initiativeInterview ProcessIntro call with Talent and the Hiring Manager Technical conversation and practical design discussion with senior engineers Final culture and values conversation with leadershipHow to ApplyBased within commuting distance of Belfast? Message Ryan Quinn on LinkedIn to learn more and share your CV.Skills: .Net Azure SQL

Principal Software Engineer

+2

Are you a technical leader who thrives on solving complex front-end problems?Do you want to guide engineering standards, shape architectural decisions, and elevate a high-performing product team?Are you ready to take ownership of large-scale React applications at an organisation building modern, user-centric platforms?Principal TypeScript Engineer (React Focus)Location: Northern Ireland (Hybrid available) Contract Type: Full-time Client: My clientAbout the RoleMy client is seeking a highly experienced Principal TypeScript Engineer with deep expertise in React to lead the next phase of their product evolution. You’ll play a pivotal role across architecture, engineering excellence, technical strategy, and developer mentorship.This is a senior technical leadership position - ideal for someone who wants influence, autonomy, and the responsibility of ensuring the front-end ecosystem remains scalable, maintainable, and performant.Key Responsibilities

Lead the technical direction of large-scale React + TypeScript applications.

Define and evolve engineering standards, patterns, and best practices across teams.

Architect complex front-end systems with an emphasis on performance, modularity, and reliability.

Guide major technical initiatives, refactors, or migrations.

Provide mentorship and leadership to Senior and Mid-level engineers.

Work closely with Product, Design, and Backend teams to deliver cohesive, high-quality features.

Conduct high-level code reviews and ensure technical quality across the codebase.

Drive improvements in CI/CD, testing strategy, and overall developer experience.

Champion accessibility, performance optimisation, and clean, maintainable code.

Required Experience

8+ years of software engineering experience, including extensive work with TypeScript.

Expert-level knowledge of React and its modern ecosystem (Hooks, Context, Suspense, SSR, Redux/RTK, or alternatives).

Strong understanding of front-end architecture at scale - modular design, micro-frontends, monorepos, component libraries.

Proven experience making technical decisions that influence multiple teams or products.

Deep knowledge of modern tooling (Webpack, Vite, Turborepo, PNPM, SWC, etc.).

Strong experience in automated testing frameworks (Jest, Testing Library, Cypress, or Playwright).

A track record of mentoring and uplifting engineering teams.

Exceptional communication and ability to collaborate across functions.

Nice to Have

Experience with Node.js or backend TypeScript services.

Exposure to cloud-native environments (AWS, GCP, or Azure).

Experience working in high-traffic or high-performance environments.

Familiarity with design systems or UI library architecture.

What’s on Offer

Opportunity to shape front-end engineering direction across products.

High autonomy and genuine technical leadership.

Work within a modern engineering culture that values innovation and quality.

Competitive salary and benefits package.

If you have any further questions on the role, please feel free to reach out to Brendan McCrory directly.Benefits: Work From Home

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Frequently asked questions

What types of React jobs are available in Belfast?

Belfast offers a range of React job opportunities including front-end developer roles, full-stack developer positions, UI/UX engineer jobs, and contract or permanent React developer positions across various industries.

Do I need to be located in Belfast to apply for React jobs listed here?

While many React jobs in Belfast prefer local candidates, some employers offer remote or hybrid working options. It's best to check the job listing details for specific location requirements.

What level of React experience is required for jobs in Belfast?

React jobs in Belfast range from junior to senior levels. Entry-level positions may require foundational React knowledge, whereas senior roles typically expect several years of experience and proficiency with related technologies like Redux or TypeScript.

Are there opportunities for contract or freelance React jobs in Belfast?

Yes, the Belfast market has several contract and freelance React opportunities. These roles often cater to project-based work with flexible durations.

How can I maximize my chances of landing a React job in Belfast?

To improve your chances, keep your CV updated with React projects, gain experience with popular React libraries, participate in local tech meetups, and apply promptly to jobs that match your skills.