Software Development Engineer in Test (SDET)

Software Development Engineer in Test (SDET)

• Remote
• Kent , Kent , United Kingdom
• Payter

As a Software Test Engineer at Payter, you'll join a close-knit, international team to build smart and secure software solutions. You'll write, test, and maintain high-quality software in collaboration with your colleagues. You'll help improve test processes, identify and resolve issues, and create tools for testing performance, security, and system integration. Promoting a strong testing culture across the team will also be part of your role.

What makes this job unique?
This is your opportunity to make a real impact at a fast-growing international scale-up. You'll work on innovative payment technologies used in EV charging, vending, hospitality, charity, and more. Currently, the role is fully remote (UK only), with plans to shift to a hybrid setup in the future. You'll enjoy flexibility, growth opportunities, and a supportive team culture that values your well-being and input.

Who are we?
Payter is a market leader in contactless and cashless payment technology. We work with major clients like Shell, Fastned, WWF, Starbucks, and Efteling. Our in-house developed platform supports various technologies from NFC and EMV to telemetry and loyalty systems. We focus on quality, innovation, and ease of integration. At Payter, you'll find an open and dynamic environment where your work has real impact.

Job requirements

Technical skills:

Programming Languages : Golang (training provided if needed)

Testing Types : Unit, integration, regression, end-to-end, performance, load, and security testing

Testing Methodologies : Test-Driven Development (TDD), Behaviour-Driven Development (BDD)

Test Techniques : Black-box, white-box testing, mocking, stubbing, and test data management

Software Practices : Git workflows, Object-Oriented Programming (OOP), SOLID principles, use of design patterns

DevOps & Infrastructure :

Infrastructure as Code (IaC)

Configuration management tools

Containerisation (e.g., Docker)

Security : Secure coding, vulnerability scanning, penetration testing, and general software security principles

Debugging : Working with logs, databases, and root cause analysis

Soft skills that make a difference:

Strong communication skills (written and verbal)

Analytical thinking and attention to detail

Self-motivation and time management

Team spirit and a willingness to mentor and share knowledge

What do we offer?

Competitive compensation including a discretionary bonus based on business results

25 days of holiday plus monthly "wellbeing days"

Remote-first working model for now, moving to hybrid in the future

Travel support and pension scheme

A collaborative, international work environment

Opportunities to innovate and grow your career