Software Development

JOIN

51-200

A laptop and the software you need, provided by the employer.

Company laptop

An employer-supported pension scheme to build up retirement savings.

Company pension plan

A share in the company's success through equity or stock options.

Company stock options

Adapt your start and end times around your life and workload.

Flexible working hours

Free coffee, tea, water and soft drinks at the office.

Free beverages

Free fruit, snacks and small refreshments at the office.

Free snacks

Work from home for part of your working week.

Home Office

Bring your dog or pet along to the office.

Pets allowed

A covered or subsidised ticket for buses, trains and local transit.

Public transportation benefits

Work fully remotely, from home or anywhere agreed.

Remote work

A subsidised gym or sports membership of your choice.

Sport membership

Determination

Learning

Ownership

Selflessness

Permanent employment

Germany

Why this role matters
JOIN helps thousands of businesses find the right people — faster, fairer, and with less friction. Our platform handles millions of candidate interactions, and our clients praise JOIN’s attention to detail and unmatched user experience.
We’re looking for a Senior Frontend Engineer to join our central office in Berlin. You’ll be stepping into a mature, integrated team and pushing it forward: improving our architecture, raising our quality bar, and shipping features that tens of thousands of users rely on every day.
<h2>Tasks</h2>
What you’ll be doing
You’ll own features end-to-end — from discovery through to production monitoring:
<ul>
<li>Ship high-impact features. You’ll take a product requirement, poke holes in it with Product and Design during discovery, architect the solution, build it in React + TypeScript, test it with Playwright and Cypress, and monitor it after launch. You’ll flag edge cases and UX trade-offs before they become problems.</li>
<li>Raise the technical bar. You’ll contribute to architectural decisions — state management patterns, performance optimization, scalability. You’ll write and advocate for TEPs (Technical Execution Plans) when changes need broader alignment. You’ll write robust unit and E2E tests because we take stability seriously — if it ships, it works.</li>
<li>Evolve the Design System. Our component library is Figma-synced and actively maintained. When your feature work surfaces gaps, you’ll improve shared components so the whole team benefits.</li>
<li>Make others better. You’ll contribute to our culture of knowledge sharing through pairing, code review, and knowledge sharing day-to-day collaboration — not through formal management, but through the work itself.</li>
</ul>
Our stack
<ul>
<li>React with TypeScript — everything is typed, no "any"s</li>
<li>Playwright for UI testing, Cypress for end-to-end testing</li>
<li>Figma-synced Design System with code generators and coding conventions</li>
<li>Zustand for state management</li>
<li>Modern.js and Turborepo to power out microfrontends monorepo architecture.</li>
<li>REST and GraphQL for data fetching</li>
<li>CI/CD pipelines, Git-based workflows, lots of automations</li>
<li>Analytics and experimentation tooling</li>
</ul>
How we work
Our Frontend Guild believes frontend engineering is a craft, not just implementation. A few things that shape our culture:
<ul>
<li>TEPs over gut feelings. We write Technical Execution Plans for significant changes — decisions are documented and thought through, not dictated.</li>
<li>Stability is a point of pride. We write E2E tests for all scenarios and optimize performance until the product feels effortless. Our users shouldn’t have to think about whether something works — it just does.</li>
<li>Design is a partnership. Engineers and designers sit together, sketch together, and challenge each other’s thinking — in person and in Figma, not just in handoff tickets.</li>
<li>Security is a default, not an afterthought.</li>
<li>We invest in tooling. Code generators, coding conventions, a living Design System, and AI-assisted workflows so engineers spend time on business logic, not scaffolding. Our product development lifecycle is future-proof.</li>
</ul>
<h2>Requirements</h2>
What we’re looking for
We don’t believe in checklists – but if most of these apply to you, we’d love to chat:
✔ 6+ years building production frontends with modern JavaScript frameworks (React strongly preferred)
✔ Deep comfort with TypeScript, HTML5, and CSS3
✔ Solid experience with state management (Zustand or equivalent)
✔ Hands-on with API integration — REST, GraphQL, or both
✔ Experience writing meaningful tests (unit and E2E)
✔ Familiarity with CI/CD and Git workflows
✔ Track record of working in cross-functional Agile teams — you collaborate with Product and Design, not just other engineers
✔ Strong opinions on performance and usability — backed by data when possible
Even better if you bring:
<ul>
<li>Experience building or maintaining a Design System</li>
<li>Comfort working in Figma alongside designers</li>
<li>Exposure to backend concepts or full-stack environments</li>
</ul>
<h2>Benefits</h2>
Our Values
🚀 Impact Over Effort – We optimize for outcomes, not hours. What matters is the impact we generate for our teams and customers.
💡 Yes, You! – It starts with you. We take ownership, act with initiative, and don’t wait for permission to make things better.
❤️ We Grow Together – As individuals and as a team. We invest in each other and get stronger collectively.
🛠 Ambition At Scale – We think big. We’re building something that matters, and we set the bar high for what’s possible.
We thrive in a fast-moving, collaborative environment. That means adapting quickly, challenging each other constructively, and spending meaningful time together in the office while trusting each other to work flexibly:
<ul>
<li>We follow a hybrid model (3 days office, 2 remote) to promote collaboration.</li>
<li>We adapt quickly and embrace change.</li>
<li>We continuously challenge ourselves and each other to improve.</li>
</ul>
This role might not be ideal if:
<ul>
<li>You prefer a highly structured environment.</li>
<li>You want a fully remote position.</li>
<li>You prefer minimal change and a slower pace.</li>
<li>You’re not excited about ownership and growth.</li>
</ul>
What’s in it for you?
🏦 Competitive salary — the range is listed in this posting; we don’t play guessing games.
🖥 Apple hardware – The best tools for the job (MacBook).
🏆 Team events – Brunches, sports activities, and quarterly gatherings in Berlin.
🌍 Productivity from Everywhere – 104 days per year remote (post-probation), following our hybrid policy.
🏠 Relocation support – Assistance with paperwork, travel, and one month of furnished accommodation.
What to expect from the hiring process
We respect your time and keep things transparent:
1️⃣ Intro call (~30 min) – Let’s see if we’re a good match.
2️⃣ Hiring Manager Interview (~60 min) – Dive into expectations and team dynamics.
3️⃣Technical Interview (~60–120 min) – Demonstrate your skills.
4️⃣ Meet the Team (Optional) – Connect with your future colleagues.
You’ll always know where you stand - no black holes, no ghosting.
You’ll always know where you stand - no black holes, no ghosting.
We welcome applications from individuals of all ages, abilities, genders, religions and diverse backgrounds. If you need assistance during the hiring process or in the workplace, let us know!
Don’t meet every requirement? No problem! We’re always open to exceptional candidates and value diversity in all forms.
📩 Apply now – We’d love to connect with you!

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Senior Frontend Engineer - ReactJS (m/f/d)

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