Posted by whoishiring 7/1/2025
Ask HN: Who is hiring? (July 2025)
Please only post if you personally are part of the hiring company—no recruiting firms or job boards. One post per company. If it isn't a household name, explain what your company does.
Please only post if you are actively filling a position and are committed to responding to applicants.
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Searchers: try https://dheerajck.github.io/hnwhoishiring/, https://amber-williams.github.io/hackernews-whos-hiring/, http://nchelluri.github.io/hnjobs/, https://hnresumetojobs.com, https://hnhired.fly.dev, https://kennytilton.github.io/whoishiring/, https://hnjobs.emilburzo.com, or this (unofficial) Chrome extension: https://chromewebstore.google.com/detail/hn-hiring-pro/mpfal....
Don't miss these other fine threads:
Who wants to be hired? https://news.ycombinator.com/item?id=44434574
Freelancer? Seeking freelancer? https://news.ycombinator.com/item?id=44434575
I'm a team lead engineer at Annapurna Labs, the small company-within-a-company that designs AWS custom silicon. My organization designs and runs the Trainium and Inferentia machine learning (ML) accelerators. Our team is hiring engineers to help build the on-chip firmware stack for new and existing chips. This firmware is the lowest layer of the Neuron software stack; you can think of it as implementing a silicon-accelerated virtual machine that the Neuron compiler targets.
This is a bare metal, system software-oriented role (think C/C++); no specific ML experience is needed, but if you have experience writing GPU/CUDA kernels or microcode for other systems, we can definitely put your experience to work. If you're interested in machine learning, you'll be adjacent to people who have tons of experience with high performance compute, chip design, and ML algorithms.
We offer relocation to Austin or Cupertino; the team is split evenly between the two sites.
Ping me if you're wanting to chat about the team or the role: ghilliar -at- amazon.com. I'm an embedded systems engineer and I don't bite :)
And here's the job description link: https://www.amazon.jobs/jobs/2894488
Promptfoo is the MIT-licensed open-source toolkit 100 k+ developers use to evaluate and secure their LLM apps. We are funded by top investors and operate as a tight, all-senior team of high-agency builders, former founders, and owner-operators.
10+ open roles - Senior Full-stack Product Engineer (TypeScript + Python) - Solutions Engineer / Architect (multiple positions available). - Senior / Staff Applied-ML & LLM Security Engineer - Red-Team Researcher - Developer Advocate / DevRel - COO / Chief of Staff - Product Marketing (Cybersecurity experience preferred) - Account Executives (Cybersecurity sales background preferred, Bay Area Required)
Even if none of these titles fit exactly, reach out — we hire great builders.
How to apply
1. Skim https://github.com/promptfoo/promptfoo and run
`npx promptfoo@latest init --example getting-started`
2. Email careers@promptfoo.dev with subject line “HN” and a short, personalized intro
(LinkedIn, resume, or GitHub link welcome).
3. I reply to every thoughtful application and will send swag if you try (or contribute to) Promptfoo.
– Michael, co-founder/CTO
Radiance is a design agency powered by The Source®, our Creative OS that combines design, automation, and AI to scale brands.
We’re backed by Invisible and are looking for a founding engineer to help us build LLM-native tools that power real creative workflows.
What you'll do: - Architect RAG pipelines, agent-based systems, and automation flows - Build APIs and full-stack features (Python + Vue or similar) - Fine-tune models for structured data extraction - Own engineering decisions, work closely with founders, and ship fast
What we’re looking for: - Strong full-stack skills (backend + frontend) - Experience with AI tools (prompting, agents, vector DBs) - Systems thinking — care about UX, scale, and maintainability - High autonomy and speed
Nice to have: - Built or fine-tuned LLM-based agents - Infra experience (AWS, Postgres, scalable APIs) - Web scraping / automation projects
Apply here → https://www.infinityconstellation.com/jobs?ashby_jid=67e3062... Or email thomas@withradiance.com — subject: “HN: Founding Engineer”
We're tackling the growing complexity of US energy regulations by automating data validation, documentation, and reporting — turning what's now a painful, manual process into a seamless, secure platform. With a power engineering talent shortage compounding the problem, operators desperately need automation. We're driven by $1.7T energy transition investment, where new regulatory requirements create natural competitive moats and mandatory adoption.
By leveraging AI to detect anomalies and flag compliance risks early, we help operators move from reactive to proactive, so they’re always ahead of the curve.
As a founding engineer, you’ll shape the technical core of our platform — from building secure cloud pipelines and encryption frameworks to architecting time-series data storage and intuitive compliance dashboards. You’ll work closely with our team (a CFA with a decade in capital markets and a PhD EE from the power sector) to solve problems that sit at the heart of energy reliability and grid stability.
Founding Data / Full Stack Engineer:
• Cloud infrastructure (AWS/GCP/Azure), VPC & secure data pipelines • IaC (Terraform / CloudFormation) • Encryption, IAM, audit logging • Handling batch + real-time ingestion (Kafka, NiFi, serverless) • Building the foundation for ML models that spot compliance gaps before they become audit findings
Meaningful equity, full product/technical ownership, remote friendly (US preferred). Contact us: jeanne@nexusgrid.ai
Tech used: AWS, Azure, CI/CD, Docker, ELK, GCP, Grafana, Java
As a Senior Site Reliability Engineer at Credit Acceptance, I will play a crucial role in ensuring our software systems' reliability, availability, and performance. I will collaborate with cross-functional teams to design, implement, and maintain robust systems, monitoring tools, and processes. The ideal candidate will have a strong background in software development, system architecture, and a passion for creating reliable and scalable software solutions.
In addition to technical skills, Credit Acceptance seeks Team Members who exhibit positive, respectful, insightful, direct, and earnest behaviors. The company's values and expectations emphasize collaboration, innovation, accountability, and compliance with policies and legal guidelines.
More details and option to apply: https://devitjobs.com/jobs/Credit-Acceptance-Senior-Site-Rel...
Istari Digital is building a modern platform for digital engineering in aerospace and defense. Our mission is to give mechanical and systems engineering teams the same velocity, collaboration, and confidence that software teams. Our platform connects known tools like CAD and MATLAB using open data standards and modern workflows.
We're a Series A company (~45 people) backed by top-tier investors (including Eric Schmidt) and a team that includes former FAANG engineers, national lab researchers, and senior military leadership. We're growing fast and hiring engineers who want to work on meaningful, complex problems with real-world impact.
This role sits on the Product Engineering team and focuses on delivering a world-class frontend experience. You’ll work closely with your teammates and our Head of Design to build a thoughtful and performant UI that meets the needs of critical high-impact programs.
Tech stack includes: React, TypeScript, Vite, Tailwind, REST APIs, Figma, WebFlow
Note: Due to the nature of our work, this role is open to U.S. Persons only
More information and application: https://jobs.lever.co/istaridigital.ai/835480c7-53ed-4f4e-90...
Play Health is redefining care for women in perimenopause through a precision platform that combines at-home hormone testing, real-time symptom tracking, and AI-powered insights. Our system translates complex biological and behavioral data into clear, personalized guidance - helping women understand what’s happening in their bodies and what actually works to feel better. As our user base grows, so does a uniquely structured, longitudinal dataset, creating a flywheel that powers better interventions today and unlocks discovery opportunities for women’s midlife health and longevity tomorrow.
We’re previously funded, experienced founders with deep expertise in biotech, clinical data, systems-level biology, and engineering - now looking for a founding designer: a world-class product designer or design engineer ready to own the entire product experience and help shape the future of women’s health.
Full Role Here - https://docs.google.com/document/d/1Vn0tZ0_FV1a-H-DZyec5RodR...
Interested? Contact us at andrea@pressplay.health and ian@pressplay.health
Smarkets is a betting exchange for sports and political trading that has handled over £37 billion in volume since 2010. Our company mission is to fix the betting industry with the best products and best prices.
We are currently looking for:
Lead Software Engineer - Backend, Distributed Systems, Rust - https://smarkets.com/job/41fba25f-0896-46d5-a093-8ebbc9e1624...
Senior Software Engineer - Backend, Rust, Python - https://smarkets.com/job/b8ef2330-b024-4f29-b55d-3269e1df76e...
Software Engineer - Backend, Python, Rust - https://smarkets.com/job/aaaf901f-77c0-4b35-9240-ed4cfa668ba...
Senior Quantitative Developer - https://smarkets.com/job/5502cdbe-6246-47ec-890b-2f2817e3cf1...