Senior Product Engineer at CountX GmbH

Berlin, North Rhine-Westphalia, Germany -

Full Time

Start Date

Immediate

Expiry Date

22 Sep, 26

Salary

0.0

Posted On

24 Jun, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

System Design, Infrastructure Thinking, Claude Code, AI-Assisted Development, PHP, TypeScript, Python, Go, React, Fullstack Development, Product Discovery, Software Architecture

Industry

Software Development

Description

Your mission countX is a Berlin-based SaaS company that simplifies EU VAT compliance for e-commerce businesses. Our platform automates VAT registration, reporting, and compliance processes, enabling online merchants to expand across Europe with less administrative effort and lower compliance risk. We are looking for a Senior Product Engineer to own features end-to-end—from problem discovery and system design to implementation, deployment, and continuous improvement. You will work autonomously across the stack, making pragmatic engineering decisions that deliver meaningful customer value. At countX, you won’t be handed a backlog of predefined tickets; instead, you’ll be trusted to identify opportunities, define solutions, and bring them to life. Our engineering team embraces modern AI-assisted development practices and works extensively with Claude Code to accelerate development and improve code quality. Our tech stack includes PHP, TypeScript, Python, Go, and React, and we value engineers who are comfortable working across technologies and choosing the right tool for the problem at hand. Your Responsibilities Own product features end to end — from discovery and design through delivery, monitoring, and iteration Make sound system design and architecture decisions, balancing speed, scalability, and maintainability Think infrastructurally — understand how your code runs, scales, and fails in production, and design accordingly Work autonomously with minimal supervision, setting your own direction and managing your own priorities Use Claude Code and modern AI-assisted development workflows to deliver high-quality software faster Collaborate with product, design, and other engineers to turn ambiguous problems into shipped solutions Raise the engineering bar through pragmatic decisions, clean implementation, and continuous improvement Your profile 7+ years of professional software engineering experience Demonstrated strength in system design thinking — able to reason about trade-offs, boundaries, and scale Strong infrastructural thinking — comfortable with how systems are deployed, observed, and operated in production Proven, hands-on usage of Claude Code and modern AI-assisted development methodologies Track record of working autonomously and delivering with minimal supervision Language agnostic — able to pick up and be productive in whatever language a problem calls for Platform agnostic — comfortable across backend, frontend, cloud, and tooling as needed Strong ownership mindset and a bias toward shipping Strong, clear written and verbal communication in English Why us? About us JTL is one of the leading providers of e-commerce software in the German-speaking region – with around 450 employees across the group and 50,000 customers from a wide range of industries. We develop scalable, flexible solutions for the online retail of the future – from ERP systems to shop and marketplace integrations. Fairness and respect are part of our everyday practice. Are you committed, curious, and eager to work in a team while taking on responsibility? Are you looking for a job where Monday isn’t the worst day of the week? Then we look forward to receiving your application!

Responsibilities

Own product features end-to-end from discovery and system design to implementation and deployment. Collaborate with cross-functional teams to turn ambiguous problems into scalable, high-quality software solutions.