Senior Fullstack Software Engineer (AI)

TL;DR

Senior Fullstack Software Engineer (AI): Designing and building modern web applications for resilient optimization of complex systems with an accent on .NET backend services and React frontends. Focus on engineering high-performance data pipelines, implementing cryptographic audit controls, and scaling reliable infrastructure in a remote-first environment.

Location: Remote (USA only)

Salary: $155,000–$215,000

Company

hirify.global is an insights company leveraging artificial intelligence, mathematical optimization, and data analytics to empower customers to anticipate and mitigate disruptions in complex systems.

What you will do

• Design and ship modular .NET services and modern React frontends.
• Architect high-performance PostgreSQL schemas and manage complex data layers.
• Build scalable caching layers with Redis and leverage S3 for large artifacts.
• Collaborate on design proposals defining data contracts and API boundaries.
• Partner with product and design teams to deliver iterative, high-quality features.
• Utilize AI tools to accelerate development while maintaining high security and quality standards.

Requirements

• Must be based in the USA
• Production experience with hash-chained audit, Merkle-tree sealing, and cross-language evidence parity (C# + Python).
• Depth in cryptographic evidence pipelines including HMAC integrity and signed checkpoints.
• Fluency in PostgreSQL transactional guarantees and advisory-lock coordination.
• Experience with ATO-evidence-bearing audit implementations (DoD, fintech, or HIPAA scale).
• Ability to architect AWS KMS integration with envelope encryption and HSM (PKCS#11).

Culture & Benefits

• Fully remote, results-based work environment.
• Competitive salary, bonus, and equity package.
• 100% employer-paid comprehensive health insurance (medical, dental, vision) for you and your family.
• Unlimited PTO with manager approval.
• 14 weeks of fully-paid parental leave.
• Flexible work environment with autonomy over your daily schedule.