ML Engineer, Retrieval & Grounded Generation

Red Cell Partners; United States; Remote; USD 135,000 - 170,000; Full time

Benefits offered by this job

Remote role

Salary, bonus, equity

Health insurance

Unlimited PTO

Parental leave

Professional development

Job summary

Red Cell Partners is recruiting a QA Engineer for an AI-enabled decision-support system. You will own the test plan, automate coverage, and ensure the delivered product meets specifications. This is a fully remote role in the United States, with periodic travel up to 25% to customer sites and DEFCON AI HQ as needed.

You will lead testing strategy and automation, partnering with product, engineering, and platform teams to deliver robust release evidence and measurable quality across releases.

Qualifications

• 5+ years in software quality engineering, test automation, or related testing ownership.
• Clear point of view on testing approaches and standards.
• Routine use of AI-assisted development with verification.
• Experience building automated test suites and CI/CD release gates.
• Experience testing against requirements, not just implementation.
• Willingness to travel up to 25% and ability to work remotely in the US.
• Active US Secret clearance required.

Responsibilities

• Own the system test plan covering functional, integration, performance, and load testing.
• Translate acceptance criteria into executable tests and coordinate with product.
• Coordinate user acceptance testing with customers and track findings.
• Build and maintain automated test suites and integrate into CI/CD.
• Maintain regression coverage across releases and produce evidence.

Skills

Software QA

Test automation

CI/CD

AI-assisted testing

Performance testing

Acceptance criteria

Job description

ML Engineer, Retrieval & Grounded Generation

Remote, USA

About Us

Red Cell Partners is an incubation firm building and investing in rapidly scalable technology-led companies that are bringing revolutionary advancements to market in three distinct practice areas: healthcare, cyber, and national security. United by a shared sense of duty and deep belief in the power of innovation, Red Cell is developing powerful tools and solutions to address our Nation’s most pressing problems.

ABOUT DEFCON AI

RESILIENCE IN THE FACE OF DISRUPTION. DEFCON AI is an insights company that leverages artificial intelligence, mathematical optimization, data analytics, and software engineering for resilient optimization of complex systems.
In today’s dynamically changing world, DEFCON AI’s technology aligns outcomes with operational goals, better decision making, and empowers customers to anticipate assess, and mitigate the impacts of disruptions.

About the Role

As QA Engineer you will own quality for an AI-enabled decision-support system: the test plan, the automated coverage, and the evidence that what was delivered is what was specified. Product defines the acceptance criteria. You build the executable version of it, and you hold engineering, platform, and everyone else delivering the work accountable to it.

This role sits on the product side of the organization, not the engineering side. You will report through the Product Lead and take direction from product, while working with engineering and platform every day. A tester embedded in engineering tends to verify what was built, because the implementation is what they see. This role verifies what was specified. A test suite written from the code will pass while still missing what the customer asked for.

That reporting line does not lower the engineering bar. You will write code and build real automation rather than managing test cases, and you will need enough fluency in the application code to test it well. As the first dedicated quality engineering hire you are establishing the approach rather than inheriting one, so we want someone with a clear point of view on how testing should work. We build with current tooling and expect the same, including AI assistance in our own engineering practice.

This is a fully remote role with occasional travel (up to 25%) to DEFCON AI HQ, customer sites, and vendor facilities as required.

Key Responsibilities

Test Strategy and Acceptance Criteria

• Own the system test plan covering functional, integration, performance, and load testing, and maintain it as a formal deliverable
• Translate the acceptance criteria set by product into executable tests
• Review acceptance criteria with product before development begins, and identify requirements that are ambiguous or not verifiable as written
• Hold engineering, platform, and partner teams accountable to the acceptance criteria, and define what evidence must exist before a change is considered complete
• Work alongside the engineering team day to day, close enough to test their work well and independent enough to report what the testing shows
• Plan and coordinate user acceptance testing with the customer, and track findings through to resolution

Test Automation and Coverage

• Build and maintain automated test suites, and integrate them into the CI/CD pipeline as release gates
• Establish and hold an automated coverage standard, and report against it
• Build performance and load testing that validates the system under its expected user load
• Maintain regression coverage across releases

Measurement and Evidence

• Build and maintain labeled evaluation sets, working with subject-matter experts whose time is limited
• Design and run sampled audits confirming that automated decisions were correct
• Measure and report what the system misses alongside what it gets right
• Measure how often users override the system, and report the trend
• Document how each committed measure is computed, on what data, and what evidence accompanies a release
• Produce this evidence independently of the people building the models

Release Governance

• Maintain the version inventory across builds, models, configurations, and thresholds
• Produce test reports, evaluation records, and rollback criteria for each release
• Work with platform engineering to confirm that test environments match production closely enough for results to be meaningful
• Hold the gate: no release ships without the evidence its acceptance requires

Required Qualifications

• 5+ years in software quality engineering, test automation, or software engineering with substantial dedicated test ownership
• A clear point of view on how testing should be done, and the judgment to know which practices are worth holding to. You will be setting the standard here rather than following one
• Routine use of AI-assisted development, with informed judgment about where it adds value and where its output requires verification. We expect AI tooling to be part of how test coverage gets built here, not an occasional experiment
• Demonstrated experience building automated test suites and integrating them into CI/CD as release gates
• Experience owning a test plan through review and acceptance
• Demonstrated habit of testing against the requirement rather than the implementation, including working directly with product owners or end users to establish what correct actually means
• Experience with performance and load testing, including establishing what a result does and does not demonstrate
• Working statistical literacy, including sampling design and the confidence a measurement can support
• Experience measuring what a system misses, not only what it gets right
• Willingness to report a result the team did not want, and to keep the measurement independent of the people whose work it evaluates
• Ability to gate work owned by people who do not report to you, and to earn enough credibility with engineers that the gate holds
• Clear, audit-ready written documentation, since much of the output of this role is evidence that others read
• Willingness to hold a release, and explain the reason, to people who want it shipped
• Active US Secret clearance. The work is performed in a controlled government cloud environment and requires a favorable investigation and CAC eligibility from the start
• Elevated security requirements apply to portions of this work and are discussed during the interview process
• Willingness to travel up to 25% to customer sites, DEFCON AI HQ, and vendor facilities as required

Preferred Qualifications

• Clearance: active Top Secret
• Environment: government DevSecOps, RMF, or ATO environments, and experience producing test evidence for a formal accreditation or audit
• Automation: contract and API testing, test data management, and building test infrastructure others can extend
• AI-assisted testing: using language models to generate and maintain test coverage, and the practices that keep generated tests meaningful rather than merely passing
• Performance: JMeter, k6, Locust, or comparable
• Evaluation: validating machine learning or model output, including groundedness and citation checking, and analyzing where users disagreed with a system recommendation
• Domain: systems where an incorrect result carries real cost, and where testing had to satisfy an outside reviewer rather than only an internal one
• Accessibility: Section 508 and WCAG verification

What Success Looks Like

• A test plan the customer accepts, and that holds up as the system grows
• Acceptance criteria that are verifiable before development starts
• Automated coverage meeting its standard and running as a release gate
• Sampled audits designed to catch an incorrect automated decision
• Performance evidence that reflects realistic load
• A release trail complete enough to reconstruct why any version shipped

What We Offer:

• A fully remote, results-based environment
• Competitive salary, bonus, and equity package
• 100% employer paid, comprehensive health insurance including medical, dental, and vision for you and your family
• Unlimited PTO, with your manager’s approval
• Flexible work environment where you manage your work day
• 14 weeks of fully-paid parental leave

Salary Range: $135,000-$170,000. This represents the typical salary range for this position based on experience, skills, and other factors.

Our Red Cell Partners Benefits (may differ for each incubation):

For full-time roles

• Career track opportunity with potential for rapid advancement withstrong performanceas the firm grows
• 100% employer paid, comprehensive health care including medical, dental, and vision for you and your family.
• Paid maternity and paternity for 14 weeks at employees' normal pay.
• Unlimited PTO, with management approval.
• Opportunities for professional development and continued learning.
• Optional 401K, FSA, and equity incentives available.
• Mental health benefits are available through Tara Mind .
• Cost effective GLP-1 solutions available through Crux .

We’re an Equal Opportunity Employer: You’ll receive consideration for employment without regard to race, sex, color, religion, sexual orientation, gender identity, national origin, protected veteran status, or on the basis of disability.