Test Engineer

Posted 17 hours ago

We are an engineering-driven development agency that helps early-stage companies kick-start their engineering operations, or helps mid-stage companies develop greenfield software projects. We strive to maintain expertise at the cutting-edge of technology, take pride in doing high quality work, and differentiate ourselves from other development teams through our results. You'll be a good fit if you are passionate about technology, like getting things done, learning new things, and working on interesting problems. You'll also be a good fit if you like freedom. We respect your autonomy and don't have strict rules on how and when you work. We only have occasional meetings, and prefer asynchronous communication. When we do have meetings, we try to knock them out all at once to maximize uninterrupted work time. If you've got a public record of your work, whether that's a body of talks and publications, or especially open source software projects, we'd love to see it. You'll go to the front of the interview line.

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About the Role

We're seeking a mid-level test engineer to join the Dusk Labs engineering team, focusing on building robust automated testing infrastructure across our portfolio of fintech and cryptography projects. This role is primarily hands-on systems engineering - designing, building, and maintaining the test frameworks and CI/CD integrations that keep our codebases reliable as they grow.

You'll be on a high-performing team with other expert-level developers who are passionate about learning and working on interesting problems.

Responsibilities

Design and build automated testing infrastructure, including unit, integration, and end-to-end test suites.
Develop and maintain comprehensive test frameworks across multiple projects spanning fintech and cryptography domains.
Build monitoring and alerting systems to surface regressions and reliability issues early.
Create tools and frameworks for continuous validation in CI/CD pipelines.
Perform test planning and coverage analysis to identify gaps in existing test suites.
Write and maintain fuzzing harnesses and property-based tests for critical system components.
Document testing strategies and translate findings into actionable recommendations for the development team.
Maintain and enhance existing testing tools and infrastructure.

Required Qualifications

Strong software development fundamentals with 2–4 years of experience.
Proficiency in Python or Rust
Comfortable with TypeScript and modern web technologies.
Strong experience with Linux systems and shell scripting.
Experience building automated testing infrastructure or CI/CD systems.
Familiarity with testing methodologies including static analysis, dynamic analysis, fuzzing, and property-based testing.
Knowledge of network protocol analysis and traffic inspection tools.
Strong analytical and problem-solving skills with attention to detail.

Preferred Qualifications

Experience with Rust.
Background in fintech, payments, or financial systems testing.
Familiarity with cryptographic concepts and protocol testing.
Experience with containerization and orchestration technologies (Docker, Kubernetes).
Experience with cloud infrastructure and infrastructure-as-code.
Experience with performance testing and benchmarking.
Open source contributions.

About Dusk Labs

We are an engineering-driven development agency that helps early-stage companies kick-start their engineering operations, or helps mid-stage companies develop greenfield software projects.

We strive to maintain expertise at the cutting-edge of technology, take pride in doing high quality work, and differentiate ourselves from other development teams through our results.

You'll be a good fit if you are passionate about technology, like getting things done, learning new things, and working on interesting problems.

You'll also be a good fit if you like freedom. We respect your autonomy and don't have strict rules on how and when you work. We only have occasional meetings, and prefer asynchronous communication. When we do have meetings, we try to knock them out all at once to maximize uninterrupted work time.

If you've got a public record of your work, whether that's a body of talks and publications, or especially open source software projects, we'd love to see it. You'll go to the front of the interview line.