Ask HN: Who is hiring? (January 2026)

PowerSync is a sync engine that keeps your backend database in sync with on-device SQLite. We support Postgres, MySQL, MongoDB and SQL Server as source databases and have a plethora of client SDKS, many of which are integrated with popular libraries and frameworks on the client-side like TanStack DB, Drizzle, GRDB, Room, etc

If you're a database enthusiast and have a solid track record of building, deploying and maintaining backend systems on modern cloud stacks at scale, please check us out.

Detail: https://www.powersync.com/careers/senior-backend-engineer-an...

Our team is small and polyglot, but experience with TypeScript is a must.

Experience with OSS projects is also a must - either you've made significant contributions to popular devtool projects or, better yet, you have your own.

Culture: We're agile and devops purists (before those terms got coopted)

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

We are building the AI Operator for growth to replace traditional ad agencies. We apply quant rigor of high-frequency trading to optimize ad spend, delivering 20-50% upside in spend efficiency. We manage spend for global category leaders like Cider and Cupshe with a clear path to managing billions of dollars. We are backed by Quiet Capital and are hiring for multiple engineering roles:

- Member of Technical Staff, Full Stack - https://pepr.ai/careers?ashby_jid=6025c6f4-3b72-4dc6-8a2c-fa...

- Member of Technical Staff, ML & Optimization - https://pepr.ai/careers?ashby_jid=baf0e7ac-164f-4f1d-9938-de...

- Member of Technical Staff, Product - https://pepr.ai/careers?ashby_jid=e6d130a7-29c0-420d-b954-ba...

Please send a note to founders@pepr.ai if you apply.

Shaswat, co-founder & CEO

2NDNATURE is a small SaaS company providing stormwater management software to municipalities and corporations. We have a mature product grounded in science, a solid customer base, and are at a technical inflection point. We are looking for our Director of Engineering to be a true "player-coach"—a hands-on leader who loves writing code (60% of the role) and mentoring a small team of developers. You will lead our transition into an AI-first platform, helping us adopt modern tools like Claude Code and Copilot to scale our capacity. The Role: Lead by example: Write code, review PRs, and establish engineering best practices (testing, CI/CD, SOC2). Collaborate: Work directly with the CEO and CPO. We value transparent decision-making over isolated technical dictation. Teach: Mentor our team on modern practices, system architecture and AI-assisted development. Requirements: -7+ years in software engineering with leadership experience. -Be in the Santa Cruz office 3 days per week. (office is a block from the beach). -Pragmatic builder who understands SaaS for regulated industries. How to Apply: Send resume and thoughtful cover letter to careers@2ndnaturewater.com. See full job description on careers page of our website www.2ndnaturewater.com

Open roles: - Engineering Manager - (Brazil)

- Sr./Staff Java Backend Engineer (Brazil/North America/Europe)

- Sr./Staff Infrastructure Engineer (North America/Europe)

- Staff GenAI Engineer

- Staff SDK Engineers - Web, Android & iOS

- Sr./Staff Data Scientist and Data Engineer

- Full-Stack Engineer - AI Agent Platform

- Product Manager for AI & RiskOps/Case Management

Apply at: https://jobs.ashbyhq.com/oscilar?utm_source=HackerNews