Senior Development Engineer in Test; SDET

Senior Development Engineer in Test (SDET) at Valstro

We’re looking for an SDET or a Software Engineer with a taste for quality who is ready to level up their career and make a real impact  goal is to build scalable, cost‑efficient, and maintainable services using modern software development practices – and that means quality is non‑negotiable.

Valstro is an ambitious Fin Tech partnership on a mission to redefine trading technology for global, multi‑asset class institutional clients. We are a people‑first company built on talent, collaboration, and motivation.

As an SDET, you will work alongside our engineering team to build and expand our testing infrastructure, ensuring our financial products are reliable, secure, and scalable. This isn’t a manual QA role – you’ll be writing code, learning new frameworks, and embedding quality throughout our development lifecycle.

• Collaborate with product and engineering teams to understand features and develop appropriate automated tests.
• Write clear, maintainable test automation code in Type Script using a bespoke in‑house solution wrapping Playwright.
• Maintain and extend the bespoke testing framework to support automated tests.
• Help identify and document bugs, working with developers to resolve issues quickly.
• Participate in code reviews to catch potential issues early.
• Learn from senior engineers and contribute ideas for improving our testing practices.

• 2‑4 years of experience in SDET or software development roles.
• Solid programming fundamentals in Type Script/JavaScript. Functional programming a plus.
• Ability to debug and troubleshoot problems across the stack.
• Experience writing automated tests. Familiarity with at least one test automation framework (Selenium, Playwright, Cypress, etc.).
• Comfortable working with APIs, both REST and Graph
  
  QL endpoints.
• Basic understanding of CI/CD concepts and tools, networking, monorepos, distributed services architecture, Docker and containers.
• Passion for delivering high‑quality, performant software in a collaborative team environment.
• Curiosity and eagerness to learn new technologies and testing approaches.
• Strong communication skills for our remote‑first environment – you can explain technical concepts clearly in writing.
• Self‑motivated and comfortable asking questions when you need help.

• Any fintech or financial services experience.
• Fluent use of terminal environments and Windows Subsystem for Linux (WSL) for day‑to‑day development and testing activities.
• Bonus:
  Experience with Loki/Tempo/Grafana for system monitoring and test result analysis.
• Bonus:
  Experience developing testing frameworks for equity trading systems in Capital Markets.

• Curious:
  Natural inquisitiveness and desire to understand how systems work – and how they might break.

Valstro offers an excellent benefits package, including pension or 401(k) plans, unlimited PTO, highly competitive compensation, and a leadership team with deep industry knowledge.

As we move forward executing our vision for clients, the Engineering team is looking for client‑obsessed, delivery‑focused high performers with a healthy dose of humility – future Fin Tech leaders ready to make an impact.

If this excites you, we’d love to chat!

Seniority level:
Mid‑Senior level.

Employment type:

Full‑time. Job function:
Engineering and Information Technology. Industries: IT Services and IT Consulting and Civil Engineering.