Radical AI | https://radical-ai.com | Multiple roles | NYC | Onsite, 5 days a week

Radical AI is a company (co-founded by Jorge Colindres, Joseph Krause, and Dr. Gerd Ceder) that's focused on changing the way materials are designed, developed, and discovered. Our goal is to build the full stack solution: from AI generated materials to autonomous, high-throughput experimentation, resulting in a new paradigm of scientific discovery that will unlock the next generation of materials that will change humanity for the better. We just raised a $60M seed round (3rd largest in NYC history) and are hiring for highly talented engineers as part of our efforts to revolutionize materials design & discovery.

Key roles:

- Senior Software Engineer - Lab Autonomy (https://jobs.lever.co/radicalai/2885cd8e-f208-4bbc-86c2-d7b4...)

- Senior Software Engineer - AI Systems/Agent (https://jobs.lever.co/radicalai/d5f1267c-82c6-43af-8e72-6f04...)

- DevOps Engineer - Platform (https://jobs.lever.co/radicalai/9891a086-713a-4dc0-a70f-c6f0...)

- Data Engineer - Platform (https://jobs.lever.co/radicalai/fdc7465f-a4e4-4b09-836e-7fe1...)

Feel free to apply using the links above or by shooting me an email w/ a resume + portfolio at Email is hidden

Coder | https://coder.com/ | Multiple roles | Multiple locations | Full-time

Coder is an AI software development company leading the future of autonomous coding. We empower teams to build software faster, more securely, and at scale through the collaboration of AI coding agents and human developers. Our mission is to make agentic AI a safe, trusted, and integral part of every software development lifecycle.

Coder’s self-hosted Cloud Development Environment (CDE) is the foundation for deploying agentic AI in the enterprise. It provides a secure, standardized, and governed workspace to deploy autonomous coding agents alongside human developers, accelerating innovation while maintaining control and compliance. Coder's isolated, policy-driven environments improve productivity, cut cloud costs, and reduce data risks. Developers transition to AI at their own pace using their own tools. Platform and security teams can govern, audit, and manage a great developer experience at scale.

We passed 100k stars on GitHub! https://github.com/coder

All positions are fully remote in the countries listed unless otherwise specified.

[1] Software Engineer, AI tools (US/Canada)

[2] Senior Software Engineer, AI Tools (US/Canada)

[3] Staff Software Engineer, front-end TypeScript/React (US/Canada)

[4] Security Engineer, DevSecOps (UK/Ireland/Poland)

And more! Apply here + job descriptions, salary bands: https://coder.com/careers?utm_source=o2n5ew72wd

Not all of our jobs are listed here. Please note that you must submit an application to be considered for any of our positions.

Founding Engineer (Warsaw, full-time, in-office)

Elastics is building an AI-native operating system for trading - deterministic agents, live data, portfolio management and execution across prediction markets, crypto, and beyond. We are Pre-Seed funded, working with our first clients, and need a Founding Engineer to accelerate building core product infrastructure.

Responsibilities:

- Build and own our agent orchestration & runtime engine (async, distributed systems)

- Deploy and scale services on Azure (Docker, CI/CD, monitoring)

- Connect to exchanges and data sources (API/websocket integration, streaming)

- Implement portfolio and risk calculations (PnL, positions, Greeks, risk metrics) Implement market discovery dashboards on our platform

Requirements: 5+ years of backend experience (Python, distributed systems, financial data pipelines) Comfort with Docker, Redis/Kafka, PostgreSQL Strong C++ experience Interest in financial markets and trading Startup mindset: you can ship, own, and iterate fast Warsaw-based (in-office) or willing to relocate Fluency in English - our work and clients are international Bachelor's or Master's degree in Computer Science, Mathematics, or a related field

Offer: $5,000/month starting salary (B2B) + meaningful equity (true founding role) Work at the forefront of financial and AI innovation Work directly with experienced math, quant and product founders Exposure to top global hedge funds, exchanges and VCs

Send your resume to Email is hidden with "HN who’s hiring" in the title

Delight | Full Stack Engineer | Onsite (Austin, TX, 3 days/week) | Full-time | https://delightapp.io

Delight is an AI-first customer orchestration platform for field service businesses — electricians, HVAC techs, solar installers, and more. We help them grow revenue and deliver great customer experiences with modern, easy-to-use tools.

We’re led by repeat founders (CEO sold an AI startup; CTO was a tech lead on React) and hiring our first engineer to help build our core platform and shape company culture.

Stack: Python, TypeScript, AWS, Docker, serverless.

If you’ve thrived in 0→1 environments and want to build at the intersection of AI and small business, we’d love to chat.

Apply at careers.delightapp.io or email Email is hidden

janitorAI | San Francisco, CA | ONSITE | Full-time We're one of the largest consumer AI websites in the world, and are building the AI-native entertainment platform of the future.

We're hiring for a range of roles, especially for backend/infra (more details here: https://about.janitorai.com/backend-infrastructure-engineer/).

If you want to work on an incredibly fast-growing consumer product and help build for scale, shoot me an email at hugo at janitorai dot com

Avtal | Austin, TX | ONSITE | Full-time

Avtal is a fast-growing company in the digital debt collections space, building systems that make agency–consumer interactions more transparent and data-driven. The engineering team works across Go, React, PostgreSQL (RDS), and AWS, solving problems around large-scale data pipelines, workflow automation, and platform reliability.

Open roles:

Full-Stack Engineer – React / Go

Backend Engineer – Go / Python (ML experience a plus)

Platform / DevOps Engineer – AWS / Linux / IaC

DBA – PostgreSQL / RDS performance & tuning

If any of this sounds interesting, email me at rachith at avtal dot com

Opendoor (https://www.opendoor.com) | San Francisco, CA | Full-time We're hiring engineers across the stack at Opendoor. We're building technology to simplify residential real estate - making it easier to buy and sell homes. Our engineering challenges span everything from marketplace dynamics and pricing models to complex operational workflows and integrations with industry systems. If you're interested in applying technology to modernize a massive, traditional industry, we'd love to hear from you.

yan at [our domain].com :D

Rootly | AI-native on-call & incident response (Slack/Teams) | Remote (US/Canada/Europe)

We help engineering teams resolve incidents faster—from first alert to retrospective—used by 1000+ customers like NVIDIA, Glean, Mistral, Figma, LinkedIn, Dropbox, Replit, Grammarly, Cisco and many more.

Hiring

* Senior Software Engineer (Backend/Rails)

* Senior Site Reliability Engineer

* Security Engineer

* QA Engineer

* Senior Solutions Engineer

* Staff Product Designer

* Product Marketing Manager

* Enterprise Account Executive

* Developer Relations & Community Manager

* Product Engineer Co-op

Why Rootly: A passionate team building modern incident tooling that teams actually love; real adoption at scale; lots of ownership and impact. See roles + details: https://rootly.com/careers

Songscription | Founding Engineer, Mobile App Developer & More | San Francisco, CA

At Songscription, we are building state-of-the-art AI models to automate music transcription, with the vision of enabling any musician to learn any song, on any instrument, at any level.

Apply at https://songscription.ai/careers and/or feel free to shoot me an email at Email is hidden if you have any questions or want to learn more.

Trak | Product Manager | Full Time | Hybrid NYC

Trak is revolutionizing the collision repair and ADAS calibration industry by building the first AI-driven calibration and compliance platform designed specifically for collision centers, ADAS calibration companies, and the technicians who power them. We are creating the operating platform of record for an industry that has been underserved by technology, enabling shops to automate calibration mapping, documentation, and compliance workflows at scale. By leveraging proprietary datasets and machine intelligence, we are transforming fragmented, manual processes into seamless, data-driven operations. Backed by leading venture investors and scaling aggressively, this is your opportunity to help build the platform that will define the future of automotive repair and calibration.

We are actively hiring for a Product Manager, for more information please see https://adastrak.com/careers. Send resumes and questions to Email is hidden