Senior Full Stack Software Engineer

Red Cell Partners

Senior Full Stack Software Engineer designing and building web applications for technology-led firm. Engaging across frontend, backend, and data layers in a remote-first setting.

Posted 5/19/2026full-timeRemote • Virginia • 🇺🇸 United StatesSenior💰 $155,000 - $215,000 per yearWebsite

Tech Stack

Tools & technologies

AWSPostgresPython

About the role

Key responsibilities & impact

Shape the product architecture end-to-end.
Own the data foundation.
Engineer for performance at scale.
Drive technical direction through RFCs.
Ship with product and design, not in a silo.
Use AI as a force multiplier (responsibly).
Hold the quality bar high.

Requirements

What you’ll need

Production experience with hash-chained audit, Merkle-tree sealing, and cross-language evidence parity (C# + Python)
Depth in cryptographic evidence pipelines — HMAC integrity, signed checkpoints, chain continuity verification
Fluency in PostgreSQL transactional guarantees for audit writes, advisory-lock coordination patterns
Prior work on ATO-evidence-bearing audit implementations (DoD, fintech regulatory audit, HIPAA-equivalent scale)
Ability to architect AWS KMS integration with envelope encryption; HSM (PKCS#11) integration familiarity

Benefits

Comp & perks

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

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

C#Pythonhash-chained auditMerkle-tree sealingHMAC integritysigned checkpointschain continuity verificationPostgreSQLAWS KMSenvelope encryption

Soft Skills

architectural designperformance engineeringtechnical directioncollaborationquality assurance