Senior Fullstack Engineer

October 6, 2026

Hybrid

Senior

Berlin

Indeed

Worth knowing

English is required

Description

A newly formed team builds custom solutions — widgets, plugins, and integrations — that extend an award-winning employee communications platform for enterprise customers. The Senior Fullstack Engineer owns solutions end-to-end: shaping use cases with stakeholders, building across the stack, and validating them with the people who use them. The role also involves mentoring mid-level engineers and establishing engineering standards in a new team. The stack includes React.js, TypeScript, Node.js, Kotlin, Go, Java, MongoDB, Docker, and Terraform, working in an agile setup with a healthy CI/CD pipeline.

Responsibilities

Own the development of custom solutions end-to-end, from technical design through implementation, testing, and release
Partner with stakeholders to define and detail use cases before development, then validate solutions and gather feedback afterward
Build across the stack: customer-facing UI in React and TypeScript, backend services, and integrations with internal and third-party APIs
Mentor mid-level engineers and help bring structure, engineering standards, and good practices to a newly formed team
Work in a cross-functional, agile setup and produce high-quality, well-tested code
Give and receive valuable feedback in our code review process, and continuously learn and share knowledge with peers
Work iteratively, pushing code frequently, keeping a healthy CI/CD pipeline, and automating where it helps

Requirements

Solid professional experience, typically 5+ years, as a fullstack developer, owning solutions from concept to delivery
Strong frontend skills with React.js, TypeScript, and JavaScript
Solid backend experience with Kotlin, Java, or Node.js
Confidence working with REST APIs and SDKs and integrating with external systems
Experience mentoring or guiding less-experienced developers and bringing structure to how a team works
Comfort working directly with stakeholders, translating business needs into technical solutions and validating them afterward
Strong focus on quality, clean code, testing, and continuous learning
Fluent written and spoken English and German, both required for German-speaking stakeholders and customers
A self-starter who works well both independently and as part of a team
Understanding and appreciation of diversity and inclusivity in the workplace

Conditions

Flexible working time models with the option of hybrid work
Yearly flex work allowance of €1560 supporting hybrid setup
31 vacation days annually including one floating holiday
Fully paid Fridays off during August on a pro rata basis
Competitive compensation including LTIP unit-based Long Term Incentive Plan
Company pension scheme
One day off per year for supporting a social project
Team events during working hours

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