QA Engineer

Mid • Remote

We’re looking for two QA Engineers who care about product quality end-to-end. You’ll join one of our products - TradeZella or Coupler.io - and focus on how the product works in real conditions: testing functionality, investigating edge cases, and resolving complex issues together with engineering, product, and support teams.

Both roles share the same core expectations around quality ownership, debugging, and collaboration. The difference lies in product-specific focus areas outlined below:

• Coupler.io is a Data Integration Platform & AI Analytics platform that requires advanced skills in working with data and API testing.

• TradeZella is a Trading journaling and educational platform, which requires the entire team to be passionate about the trading domain, as well as extended UX testing skills.

*If you have a preference for which product you’d like to join, please indicate it in your application.

WHAT WE ARE LOOKING FOR?

Testing & QA expertise (common for both roles)

Strong experience with manual testing and end-to-end validation
Experience in investigating customer issues and performing root cause analysis
Experience in building and improving QA processes
Experience with UX testing

Technical skills:

Strong debugging and problem-solving skills, including log analysis (CloudWatch, Logs Explorer)
Good understanding of networks, HTTP, APIs, and web/client architectures
Experience with version control systems (GitHub, GitLab, etc.)
Experience using AI tools for workflow optimization

Communication & mindset:

Ability to translate technical concepts for different audiences (engineering ↔ non-technical)
Strong sense of ownership and accountability
Structured, detail-oriented approach
Fluent English (written and spoken)

Product-specific requirements

For Coupler.io (Data integration platform)

Experience in API testing (working with documentation vs. real behavior, identifying inconsistencies)
Confidence validating third-party integrations across environments

Would be a plus:

Experience with Playwright (TypeScript)

For TradeZella (Trading journal platform)

Strong UX testing skills beyond formal requirements (user acceptance testing, business acceptance testing, usability validation)
Desire to dive into the trading domain

Would be a plus:

Experience with trading platforms (testing of trading platforms or personal trading experience)

Your responsibilities

Analyze requirements, test functionality, and identify defects and edge cases
Own investigation of complex customer issues through L3 support, driving root cause resolution
Partner with engineering and product to resolve issues and improve system reliability
Improve QA practices and elevate debugging and investigation standards, including AI adoption practices
Support releases and ensure stable rollouts with active post-release follow-up

Railsware

Railsware is a product-driven technology company that builds and scales its own software solutions. Operating in the software and SaaS industry, the company develops digital products such as Coupler.io, a data integration and AI analytics platform, and TradeZella, a trading journal and education platform. Railsware emphasizes end-to-end product quality, strong engineering practices, and cross-functional collaboration. The company values ownership, accountability, structured problem-solving, and continuous improvement, including the adoption of modern tools and AI to optimize workflows. With a focus on innovation, reliability, and user experience, Railsware operates as a collaborative, engineering-centered organization dedicated to creating high-quality, customer-focused products.

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