Software Development Engineer in Test (SDET)

What We Do
Gridline is a fast-growing, VC-backed fintech company building the infrastructure that powers private markets in the wealth channel. We bring speed, transparency, and institutional-grade operating rigor to a historically manual and opaque part of the financial system.
We’re in a phase of rapid growth and are building the team that will define the next generation of private market infrastructure.
Who We Are
We’re operators and builders who care about execution, clarity, and long-term impact. We look for people who:

• Make data-driven decisions and think in systems
• Take ownership and move with urgency
• Communicate clearly and set thoughtful priorities
• Learn fast and thrive in evolving environments
• Operate with candor, integrity, and high standards

Role Overview
Gridline is seeking a Software Development Engineer in Test (SDET) to help ensure the quality, reliability, and scalability of our platform. You’ll work closely with Engineering and Product to build automated tests that validate core workflows, system integrations, and end-to-end user experiences.
This is an automation-first role with a strong engineering mindset. You’ll write test code, influence system design, and help embed quality throughout the development lifecycle as we scale.
Core Responsibilities

• Design, build, and maintain automated tests across core platform workflows
• Translate product and technical requirements into reliable, repeatable test coverage
• Partner with engineers to ensure features are testable from design through release
• Own regression testing for key releases and critical paths
• Identify gaps in test coverage and continuously improve quality standards
• Support CI/CD pipelines to enable fast, confident deployments
• Assist with debugging, root-cause analysis, and prevention of production issues

Qualifications

• 3+ years of experience in SDET, QA automation, or quality engineering roles
• Hands-on experience building and maintaining automated test suites
• Strong understanding of software development lifecycles and QA best practices
• Experience working in Agile, fast-moving environments
• Ability to break down complex business and technical requirements into effective test scenarios
• Comfortable collaborating cross-functionally with Engineering and Product
• Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience

Preferred Qualifications

• Experience testing SaaS or consumer-facing web applications.
• Familiarity with JavaScript-based test frameworks.
• Experience in fintech or data-heavy products.