Senior Software Engineer – Backend / Fullstack (d/f/m)

Personio; Greater London; Hybrid; GBP 70,000 - 90,000; Full time

Benefits offered by this job

Competitive salary and equity

28 days holiday, increasing with tenure

20 Flex Days to work from anywhere in Europe

Strong engineering culture focused on ownership and impact

Job summary

Personio is hiring a Senior Software Engineer in London, offering a hybrid working model with the flexibility to work 2 days in-office. You will design and scale backend or fullstack systems for thousands of users, collaborating with cross-functional teams. Strong backend skills, a sense of ownership, and experience in production environments are essential. Benefits include competitive salary, 28 days holiday, and the ability to work from anywhere in Europe.

Qualifications

• Strong experience as a Software Engineer in production environments.
• Solid backend skills in Java, Kotlin, or similar.
• Experience building scalable and reliable systems.

Responsibilities

• Design, build, and scale backend or fullstack systems used by thousands of customers.
• Own features end-to-end, from problem definition through to production.
• Collaborate closely with Product, Design, and other engineering teams.

Skills

Software Engineering

Backend Development (Java, Kotlin)

Fullstack Experience

Scalable Systems

Clear Communication

Tools

AWS

Job description

Senior Software Engineer – Backend / Fullstack (d/f/m)

Product, Technology & Design

Full Time

Munich, Berlin or London

About The Role

We’re hiring multiple Senior Software Engineers across Personio. This is an opportunity for experienced engineers who want to work on meaningful, high‑impact problems across a range of product areas. Depending on your experience and interests, you could join teams working on:

• Payroll & Fintech systems
• Time & Attendance
• Core HR platform
• Workflow automation
• Integrations & platform services
• AI-powered product experiences

All of these areas are critical to our mission of building the People Operating System for Europe, used by thousands of organisations to manage their people, payroll, and processes.

What You’ll Do

• Design, build, and scale backend or fullstack systems used by thousands of customers
• Own features end‑to‑end, from problem definition through to production
• Work on distributed systems where reliability, performance, and correctness matter
• Collaborate closely with Product, Design, and other engineering teams
• Contribute to architectural decisions and continuously improve our systems
• Help shape engineering best practices and raise the bar across teams

What We’re Looking For

• Strong experience as a Software Engineer in production environments
• Solid backend skills (Java, Kotlin, or similar) and/or fullstack experience
• Experience building scalable, reliable systems
• Ability to navigate ambiguity and contribute to problem definition
• A strong sense of ownership and accountability
• Clear communication and collaboration skills

Nice to Have (depending on team)

• Experience in payroll, fintech, or regulated domains
• Exposure to distributed systems or event‑driven architectures
• Experience with cloud platforms (e.g. AWS)
• Interest or experience in AI‑driven development workflows

Locations & Working Model

This role can be based in: Munich, Berlin, London.

We follow a hybrid working model with 2 days per week in the office, giving you a balance of in‑person collaboration and flexibility.

Benefits

• Competitive salary and equity
• 28 days holiday, increasing with tenure
• Hybrid working model (2 days per week in the office)
• 20 Flex Days to work from anywhere in Europe
• A strong engineering culture focused on ownership and impact