Mid-Level Full-Stack Engineer (React + Go) - EMEA

Tyk Technologies; Greater London; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A tech company specializing in API management seeks a Mid-Level Full-Stack Engineer to design and build solutions for their Dashboard and API Gateway products. This role requires strong expertise in React for frontend development and Go for backend services. Candidates should have experience with distributed systems design, security principles, and a passion for improving software delivery. The organization promotes unlimited paid holidays and remote work, encouraging a flexible and autonomous environment.

Benefits

Unlimited paid holidays

Flexible working hours

Employee share scheme

Generous maternity and paternity leave

Qualifications

• Strong foundational knowledge in JavaScript and React development.
• Experience with backend services, particularly in Go.
• Familiarity with creating secure APIs.

Responsibilities

• Design and build solutions for the Dashboard and API Gateway products.
• Implement React frontends and Go services.
• Participate in code reviews and provide effective feedback.

Skills

JavaScript

React

Go

Distributed Systems Design

Test-Driven Development (TDD)

Tools

Redis

MongoDB

Job description

Who are Tyk, and what do we do?

The Tyk API Management platform is helping to drive the connected world and power new products and services. We’re changing the way that organisations connect any number of their systems and services.Whether internal, external, public or highly encrypted systems, Tyk helps businesses drive value across the retail, finance, telecoms, healthcare, or media industries (to name just a few!)

If you’ve banked online, used an app to check the news, or perhaps even driven a connected car, API’s, and by extension, Tyk, make that possible. Founded in 2015 with offices in London – UK, London – Ontario, Atlanta and Singapore, we have many thousands of users of our B2B platform across the globe. Brands using Tyk range from Lotte, Bell, T Mobile, to RBS, Capital One and Vinci. We have a varied user base hailing from every continent – even Antarctica.

Our Mission

Tyk is on a mission to connect every system in the world. We’ve started by building an API Management platform.

Total flexibility, default remote, radical responsibility

We offer unlimited paid holidays and remote working from anywhere in the world, for everyone, Why? Tyk was founded on the principle of offering flexibility and autonomy to our employees, we believe this allows our employees to achieve their best results. It also means we can build the best possible team, location and working hours are no barrier.

If this sounds like an environment that you believe could work for you then read on to find out more.

The role:

As a Mid-Level Full-Stack Engineer (React + Go) at Tyk, you’ll be responsible for designing and building compelling solutions for our Dashboard and API Gateway products. You’ll implement performant, accessible React frontends and reliable Go services and APIs. You’ll work closely with cross-functional teams to deliver high-quality, efficient solutions while championing continuous improvement in our software engineering lifecycle.

Here’s what you’ll be responsible for:

Technical Ownership

• Contribute to solutions design for medium to high complexity problems, adhering to established solution design principles
• Contribute to distributed system designs with security-first principles, ensuring no security test defects or production leakage
• Contribute to the direction of dashboard UI development and API functionality
• Build and extend product capabilities across the stack, including React frontends and Go-based APIs (traffic routing, security, authentication, and authorization where relevant)

Engineering Excellence

• Write high-quality code that satisfies user stories across React and Go services
• Implement best practice coding principles (reusable components, scalable code) on both frontend and backend
• Troubleshoot and fix issues with quality pull requests that pass tests
• Ensure adherence to software engineering processes to avoid technical debt
• Adopt continuous improvement in engineering practices (CI/CD, testing, automation)
• Practice Test-Driven Development (TDD) where it adds clear value to ensure robust, well-tested code

Mentorship & Team Player

• Participate in and occasionally lead code reviews, providing quality feedback before approval
• Offer constructive suggestions for support when appropriate to your colleagues.
• We value your perspective, if you notice potential areas for improvement in our engineering processes, feel free to collaborate with the team to develop and propose beneficial changes.

Quality & Documentation

• Prioritize documentation-first development, ensuring docs are written pre-code and kept current
• Meet acceptance criteria for assigned tasks before PR merges
• Fully adhere to Scrum process and Definition of Done
• Drive a culture of writing automated tests for every new feature and bug fixAdvocate for and demonstrate TDD practices in daily development work

Frontend Focus (React)

• Strong JavaScript foundations (ES6+, async/await, closures, event loop, modules)
• Proficient with React hooks, composition, controlled components, and context; avoid common anti-patterns
• Sensible state management (i.e Redux, context) and data-fetching patterns (caching, retries, error states)
• Performance best practices: memoization, virtualization, code-splitting, lazy loading, minimizing re-renders; use React Profiler and browser devtools
• Secure frontend practices (XSS/CSRF mitigation, CSP, input sanitization)
• Testing with Jest and React Testing Library
• Understanding of modern build tooling (Vite/Webpack), bundling, and asset delivery

Here’s what we’re looking for:

Technical Skills

• Solid engineering experience across frontend and backend, with:
  • Experience building production React applications
  • Experience building backend services/APIs in Go (or strong Go exposure alongside another typed backend language)
• Understanding of distributed systems design fundamentals and secure API design (REST and/or gRPC)
• Familiarity with Redis and MongoDB
• Experience with software engineering best practices (unit testing, code reviews, design documentation)
• Experience in applying SOLID principles and Test-Driven Development methodologies

Professional Qualities

• Very organized with exceptional attention to detail
• Strong communication skills
• Passion for continuous improvement in software delivery lifecycle
• Experience influencing product strategies through technical knowledge
• Collaborative, ownership mindset in a fully remote environment
• Security-first software development mindset
• Comfort with AI technologies and automation

Bonus Skills

• Experience with Cloud products, Kubernetes or other orchestration tools
• API management experience
• Open source contributions
• Experience with React performance tooling
• Knowledge of authentication/authorization flows (OAuth/OIDC)

Here’s why you should join us:

• Everyone has unlimited paid holiday.
• We have total flexibility in hours, as we believe creativity flows better when our people are given freedom to decide whentheyare most productive. Everyone is unique after all.
• Employee share scheme
• Generous maternity and paternity leave

We all share the same vision – we value authenticity, respect, responsibility, independence, honesty, diversity and inclusion and most importantly treating others how you wish to be treated. We look for like-minded people who bring their personalities to work everyday, strive to achieve their personal goals and who are willing to challenge the way we do things, why? – to make what we do even better!

Our values tell the story of Tyk – here’s how:

• It’s ok to screw up!

We’ve found that it’s often the ‘stupid’ or unexpected ideas that turn out to be the successful ones – so try it, at least we can say we have!

• The only stupid idea, is the untested one!

It’s in our DNA – starting a business with founders 12 hours apart, giving our gateway away for free – sure, we did that, and we’d do it again!

• Trust starts with you – make it count!

Trust is a two-way street – instill it from day one!

• Assume best intent!

We have each other’s back – we’re all on the same team. Think before you speak or act.

• Make things, better!

Always try to leave things better than when you found them – change is constant, inevitable and embraced! Be that change we want to see.

What’s it like to work here?! check it out: https://tyk.io/worklife/

Tyk isan equal opportunities employerand we are determined to ensure that no applicant or employee receives less favourable treatment on the grounds of gender, age, disability, religion, belief, sexual orientation, marital status, or race, or is disadvantaged by conditions or requirements which cannot be shown to be justifiable.

You can see more about us here https://tyk.io