Senior Full Stack Engineer

October 15, 2026

Office

Senior

Berlin, Germany

Keep in mind

Office-only work

Description

Technology-driven commerce company whose proprietary tech stack powers its own shops and a commerce infrastructure solution serving over 350 brands globally. The Campaign Engine is a brand-new product enabling self-service campaign management for Retail Media Partners, giving them direct access to loyalty frameworks such as Missions & Coupons. The role covers end-to-end full-stack delivery across PHP/Laravel APIs and React UI components within an autonomous, greenfield-like environment of specialized product teams.

Responsibilities

Ship full-stack features end-to-end across PHP/Laravel APIs and React UI components
Lead technical feature design and build background jobs, REST endpoints and MySQL migrations
Work on high-precision domain logic covering CPC bidding, ad budgets and campaign eligibility
Keep frontend and backend synchronized through strictly typed API contracts (OpenAPI/TypeSpec)
Own production stability end-to-end, from writing automated tests to AWS ECS deployments and Datadog/Sentry alerting
Balance strict engineering rigor on billing/budget flows with fast iteration on exploratory UI features
Review full-stack code, optimize queries and leverage modern AI tools in daily work
Partner with Product to break down features, estimate effort and ship in short, agile iterations

Requirements

5+ years of full-stack engineering experience building and scaling production web applications
Computer science degree or equivalent hands-on experience
Deep backend expertise in PHP 8 and Laravel, including RESTful APIs, background queues and input validation
High-performance MySQL schema design and query tuning
Strong frontend proficiency in TypeScript and React (or Vue) with server state management and typed API clients
Contract-first API design skills using OpenAPI/TypeSpec
Strong habit of writing full-stack automated tests with PHPUnit, Vitest and Playwright
Familiarity with production tooling and observability: Git, CI/CD pipelines, AWS, Redis, Datadog/Sentry monitoring
Modern AI coding assistants (Cursor, Claude Code) in daily work
True end-to-end ownership: complete accountability for features from ideation to production
Pragmatic, adaptable mindset focused on iterative value over over-engineering
Clear communication and strong collaboration when translating technical trade-offs for product teams
Ad-tech, marketplace, bidding/budgeting or eCommerce domain experience
Experience with Laravel (Eloquent, Horizon) and React
Ant Design or similar enterprise component library, MobX state management and styled-components
Static analysis and automation (PHPStan/Larastan, Rector, ESLint) and Nx monorepos
Experience with OpenSearch, BigQuery