Sr. Software Engineer in Test Job Washington District of Columbia USA,Software Development

* Native/Bilingual English is required for this role (read/written/spoken)

Monthly salary: $4,000 - $4,500 USD

Along with our partner, we are seeking a highly skilled and motivated Senior Software Engineer in Test to collaborate with their close-knit and agile Engineering Team. You will work with other engineers, product managers, and stakeholders to build and own the automated testing and quality infrastructure that protects our partner's platform and its partner integrations.

You are:

Collaborative and have experience working with cross-functional teams to gather and refine requirements, ensuring alignment with overall business goals and customer needs.
An engineer first, you write production-quality test code, not just test cases.
Detail-oriented and write clean, maintainable, and well-structured code, adhering to best practices and industry standards.
Skeptical by instinct, you look for the edge case, the race condition, and the partner API that returns something undocumented.
Able to reason about risk and prioritize what matters most when full coverage isn't possible.
Independent and work well under occasional pressure in a fast-paced environment.

You will:

Design, build, and own our partner's automated test suites across the unit, API, service, and end-to-end layers.
Build and maintain integration test coverage for their partner ecosystem (Door Dash, Toast, Uber Eats, Square), including mocks, sandboxes, and contract tests that catch breaking partner changes before their customers do.
Establish and enforce quality gates in CI so regressions are caught on the pull request, not in production.
Build reliable test data and test environment tooling, so suites are repeatable rather than flaky.
Investigate, triage, and root-cause failures, and drive them to resolution with the owning engineer.
Develop and maintain technical documentation covering test strategy, coverage, and how to run and extend the suites.
Review fellow team members' work through code reviews, with a focus on testability and coverage.
Report on quality signals - coverage, flake rate, escaped defects, so the team can act on them.

Requirements:

4+ years of professional software development experience, with a substantial portion focused on test automation.
Proven ability to write and maintain automated tests in a production codebase, including:
Ruby and RSpec (our partner's backend is Ruby on Rails with Sidekiq).
REST API and integration testing, including mocking and stubbing third-party services.
Experience working with relational databases such as MySQL, MSSQL, or PostgreSQL, and writing SQL to validate data.
Experience building and maintaining CI pipelines - GIT, Git Hub Actions, Dev Ops, CICD.
Comfortable using AI coding assistants to accelerate test authoring and failure triage, while applying your own judgment to test strategy, risk analysis, and architecture
Exceptional problem-solving skills with the ability to think critically and creatively to develop innovative solutions.

Even better if you have:

Have tested high-volume third-party API integrations, or a partner or marketplace platform.
Have built AI-assisted quality tooling - automated test generation, self-healing selectors, or LLM-based validation of outputs that don't have a single correct answer.
Have experience testing asynchronous, queue-based systems such as Sidekiq.
Have exposure to Cloud development methodologies and their associated environments, such as Azure and AWS.
Have a conceptual understanding of front-end technology to include React, HTML5/CSS, etc.
Have experience with performance or load testing.
Have worked in restaurant technology, payments, or POS integrations.

* Please note our partner is only looking for full-time dedicated team members who are eager to fully integrate within their team.

A fully remote position with a structured schedule that supports work-life balance.