Ask HN: Who is hiring? (April 2026)

We're a freight brokerage in NJ building a self-hosted, AI-first platform to replace our legacy CRM/TMS.

The AI compute infrastructure and data foundation are already in place. We need the architect who turns it into a production operating system.

This is a systems architecture role, not a feature dev role. If your primary strength is writing features or following tickets, this is not the role.

You will be responsible for: designing and deploying a PostgreSQL schema for complex freight operations across 30+ entities. Building Python service layers integrating multiple REST APIs. Wiring locally-hosted LLM inference into business workflows. Structuring systems that involve document ingestion, email processing, and asynchronous event-driven pipelines. Defining backend patterns for reliability and maintainability across a multi-million record environment.

The entire stack is self-hosted on custom-built server hardware. Database, application layer, AI inference — all of it. No cloud dependencies. No API rate limits. No monthly GPU bills. No vendor lock-in. You have direct access to the metal, you deploy on your terms, and the only ceiling on what you can run is the hardware itself.

If you've ever wanted to build a production platform without a cloud provider standing between you and your infrastructure, this is that role.

You are the first technical hire. You report directly to the owner, who is directly involved in this hire and in daily collaboration on the build. Architectural decisions are yours to make. AI coding tools and low-code UI frameworks are part of the workflow — your time goes to data models, service orchestration, and API plumbing, not hand-building screens.

Stack: Python, PostgreSQL, FastAPI, Docker, Neo4j, Linux, vLLM. Preferred: freight/TMS domain, Microsoft Graph API, CRM migration experience.

1-week paid onsite onboarding in NJ, then fully remote. Equity conversation open once mutual fit is established.

To apply, send: (1) your resume, (2) a brief writeup of a system you designed end-to-end — not code, but the architecture decisions you made and why, (3) a short note on why this role interests you.

nj.technical.hire.spring.2026@proton.me

I have 10+ years of experience across big tech, startups, and open source, from founding-stage ambiguity to production systems at meaningful scale, in stacks that overlap a lot with PostHog's.

Before applying, I spent a few weeks using PostHog, and that turned into 6 merged PRs and 1 more in review. Some came from community discussions where I saw users asking for something useful and others came from friction I hit while using the product myself. I also shared a few additional concrete ideas in my cover letter that I'd be excited to bring to PostHog.

If this feels like a miss worth revisiting, I'd love to chat. (parinporecha@gmail.com)

ChainSecurity is a young and innovative cybersecurity company that operates in the blockchain and cryptocurrency space. Our mission is to make the blockchain space secure and trustworthy for people, companies, and governments alike. We are proud of our security experts from the renowned universities ETH Zurich, EPFL Lausanne and others.

We are trusted by 100+ blockchain companies and established corporations with security audits and services. We have secured complex systems for top blockchain clients, such as decentralized finance (DeFi) projects, and multinational organizations, such as banks and industrial consortia. A ChainSecurity Auditor will review the most complex blockchain projects to find vulnerabilities which no-one else can. By using state of the art tools, expert knowledge and a deep understanding of the fundamentals, we secure projects handling billions, often forming the foundation in the new paradigm of an open financial system.

Your Responsibilities:

* Work directly with the developers of the most successful teams in the blockchain industry to audit their code and secure their products

* Contribute to our security tools and create new ones in collaboration with our internal research team

* Conduct security research and publish your findings Requirements:

* Strong background in software engineering, focused on security relevant areas and most importantly being able to reason about complex code

* Experience with penetration testing, vulnerability scanning, threat modeling or similar is a plus

* Good knowledge of cryptography

* Proficiency with Linux and Git

* Good written communication skills

* Fluent in OOP programming language

Bonus Points:

* Formal Verification, White Box, Vulnerability Scanning

* Solid Blockchain Knowledge

* Consensus Algorithms

Join us here: https://www.chainsecurity.com/jobs/blockchain-security-engin...

Questions about the role? Contact: jobs@chainsecurity.com