Stellar Science | Hybrid (USA) Albuquerque NM, Washington DC (Tysons VA), Dayton OH | Full time, interns/co-ops | U.S. citizenship required | https://www.stellarscience.com

Company: We're a small scientific software development company that develops custom scientific and engineering analysis applications in domains including: space situational awareness (monitoring the locations, health and status of on-orbit satellites), image simulation, high power microwave systems, modeling and simulation, laser systems modeling, AI/ML including physics-informed neural networks (PINN), human body thermoregulation, computer vision and image processing, high performance computing (HPC), computer aided design (CAD), and more. All exciting applications and no CRUD. We emphasize high quality code and lightweight processes that free software engineers to be productive.

Experience: Other than interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field, plus preferably 3+ years of work experience or a Masters or PhD in lieu of work experience. (Roughly 30% of our staff have PhDs.)

Technologies: Mostly C++23, Qt 6.5-6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and other projects use Python, some use Java or Javascript/Typescript/React.

Apply online at https://www.stellarscience.com/careers/.

DeepAI | Software Engineer (Full Stack, Django, AWS) | Remote | Contract (W2 or 1099) | Ongoing

DeepAI is the all-in-one creative AI platform: generate images, edit photos, chat with AI (web browsing, voice), create videos and music, all in your browser. We focus on accessibility, affordability, and fun.

What you'll do: - Build and upgrade core features (chat, image, video, etc) - Work full stack: Django, AWS, MySQL, vanilla JS (no frameworks) - Mix of new features and legacy code

You: - 3+ years coding professionally - Strong Python/Django - Comfortable with vanilla JS - AWS/cloud experience - Bonus: Docker, MySQL, LLM APIs, AI/ML interest

Team: - 10 people, work directly with founders - Fun, creative culture - Flexible, ongoing contract (W2 or 1099)

Compensation: - Usually hourly, $50-200/hour. Equity or full time is possible.

To apply: Email team@deepai.org with resume, GitHub, and a short note (mention HN).

Note, we're also hiring for technical customer support roles.

Around | Lead Backend Developer | Full-time | Remote

We’re building a modern platform to transform how companies in the consumer packaged goods (CPG) industry operate and grow. Our goal is to streamline the way products are presented, shared, and sold across global markets. We’re post-MVP and pre-revenue, now moving fast to onboard early users and shape the future of this industry.

We’re looking for a Lead Backend Developer to join our ambitious, early-stage startup as a foundational team member. If you’re excited by the idea of taking the lead on the ongoing development and strategy for our backend architecture, making high-level technical decisions, and getting in at the ground floor of something big — we want to talk.

To apply, please submit your resume and links to your work GitHub/LinkedIn here: https://around.breezy.hr/p/66286caf65cb-lead-backend-develop....

AI x Healthcare Startup | Boston, MA Onsite | Full-time | Early Engineer

We're looking for a backend-leaning fullstack dev. You will be one of the first engineers outside of the founding team. Here is a bit more about us: We're a seed stage AI startup backed by several top tier VCs. We're on a mission to ensure patients get the coverage they deserve from their health insurance.

We’re building deep, vertically integrated technology systems to solve fundamental problems in US healthcare - the biggest market in the world ($5T). We use AWS, K8s, React, and Rust but there is no requirement to have prior experience with them specifically. We'll teach you!

We are a founding team made up of ex-YC, Amazon, Meta, Microsoft, and Harvard Business School with previous successful exits. We have a 6+ month customer waitlist and growing insanely fast.

We're hiring our first engineer outside the founders. You'll work directly with customers to understand their needs, design the right solution, and build from zero to one. You'll own entire parts of the roadmap and tech stack while wearing multiple hats. Most important characteristics are resilience, work ethic, and curiosity. We care about slope, not where you are today.

This is an opportunity to work in an insanely fast paced, high ownership environment while solving real problems in healthcare.

We're happy to share more details on the role in person/on zoom. Please fill out this form if interested!

https://wgwx7h7be0p.typeform.com/to/LV0t8OjI

RWX | Software Engineer | REMOTE (US) | Full-time | https://rwx.com

$175K – $250K + equity

We're a CI/CD platform with an entirely differentiated execution model. Rather than parallelizing jobs on VMs, we provide a serverless interface using a graph of tasks. We then have automatic, content-based caching, which eliminates the large amount of redundant executions that CI platforms have today. You can test changes from a local CLI so that you don't have to commit and push to run. We've made substantial improvements to every aspect of the developer experience.

We're looking for backend-focused engineers who excel at building developer tools. Our engineers are effectively product managers as well and work highly autonomously.

How to apply: email me at dan@rwx.com

Sift (https://siftstack.com) | Multiple Roles | Full-time | El Segundo, CA

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- Senior Software Engineering Manager | Full-time | El Segundo, CA / Hybrid - https://jobs.ashbyhq.com/siftstack/ab8d1ce8-5744-4452-a62f-7...

- Senior Software Engineer, Backend | Full-time | El Segundo, CA / Hybrid - https://jobs.ashbyhq.com/siftstack/22c594ae-bba9-4663-b135-e...

- Senior Software Engineer, Full Stack | Full-time | El Segundo, CA / Hybrid - https://jobs.ashbyhq.com/siftstack/6e482c2b-b7a2-4206-8701-3...

- Product Manager | Full-time | El Segundo, CA / Hybrid - https://jobs.ashbyhq.com/siftstack/73eabbe8-2c55-41fb-8793-e...

---

We're building the world's first observability stack for mission-critical hardware sensor data. Founded by engineers who've literally put rockets into orbit, Sift provides unified data pipelines, infrastructure, and analysis tools for complex hardware systems.

Our platform helps aerospace, robotics, and other hardware companies accelerate their engineering cycles by turning "trial and error" into "trial and measure." We work with companies like Reliable Robotics and others pushing the boundaries of autonomous systems and space technology. We're looking for engineers who are passionate about:

- Building scalable data infrastructure for real-time telemetry

- Working with mission-critical systems where failure isn't an option

- Helping the next generation of machines reach orbit and beyond

If you're interested in joining a team that's making hardware development faster, safer, and more data-driven, apply above!

Promptfoo | Senior/Staff Engineers, Former Technical Founders & Experienced Operators | Remote (US time zones) / Hybrid San Mateo CA | Full-time

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

Puma.tech | Remote-first with PST overlap | iOS/MacOS, Android, Ai/ML, Growth | https://puma.tech

Hi all, I’m Yuriy, founder of Puma.tech. Previously worked as software engineer & developer advocate at Cloudant (YC S08, Acq. by IBM), Meteor (YC S11), Parse (YC S11, Facebook/Meta), and explored Ai/ML (computer vision for self-driving cars).

We have 2 main products:

1. Puma Browser with built in LLMs & Wallets. Private by design. Future of the web is agentic – come help us explore best ways to shape it.

2. Puma Network that we're just starting to build out – a way to store and share your memories, context and credentials and provide access to other apps.

If either is exciting to you – please reach out.

We’ve raised a few rounds from some of the best builders in crypto and ai:

Protocol Labs (YC S14), Chris Larsen (Ripple), Don Ho (Orange DAO, Quantstamp W18), Toly (Solana), Illia Polosukhin (NEAR Protocol), Sridhar Ramaswamy (Snowflake CEO, Neeva, Greylock), Jason Warner (poolside.ai, ex-GitHub CTO), Evil Rabbit (Vercel), John Pham (SF Compute) and other amazing builders.

We value Optimism, Kindness, Curiosity, Speed and Grit.

Open Roles: Eng (iOS/MacOS, Android, Ai/ML, Browser Extensions), Based Social Media Intern; Internships: Eng, Design, Growth

How to Apply: visit https://puma.tech or email careers+hn [at] puma.tech with your GitHub, a note on what you're most proud of building and what you'd like to build next.

Thank you!

Rakuten Japan | https://global.rakuten.com/corp/ | Innovating digital ecosystems through e-commerce, fintech, and mobile

Open Role:

    Platform Engineer – Tokyo, Japan 

 Focus Areas: #Kubernetes, #Linux, #Chef, #Terraform, #GCP, #OnPrem, #RockyLinux, #Rook, #Ceph

 Location: Tokyo – 4 days/week in-office (1 day WFH)

About Rakuten: https://global.rakuten.com/corp/about/

Supabase | https://supabase.com/ | Remote

Supabase is the Postgres Development Platform and we are looking for Product Managers and Technical Program managers. You will be working with very strong Product Engineers across a wide variety of products (Postgres, realtime, storage, Queues, etc). If you enjoy working on developer tools and like to get your hands dirty, check out our open product roles

- Product Manager https://jobs.ashbyhq.com/supabase/74542052-f648-48fb-a8fe-a8...

- Technical Program Manager https://jobs.ashbyhq.com/supabase/b83c7316-77ce-49a8-a199-9f...

We are also hiring for other engineering and growth roles - https://supabase.com/careers

Udacity | https://www.udacity.com/ | Upskilling talent for the careers of the future

Open Roles:

- Senior Software Engineer - United States - Remote - Full-Time

- Senior Backend Software Engineer - United States - Remote - Full-Time

- Principal Data Analyst - India - Remote - Full-Time

Apply here: https://job-boards.greenhouse.io/udacity/?departments%5B%5D=...

For more Job opportunities: https://job-boards.greenhouse.io/udacity

About Udacity: https://www.udacity.com/about-us

Applied to this last month with twenty years experience, didn't even get a reply. Yet here it is again.

Galaxy (getgalaxy.io) - Cursor for Data | NYC, NY | Full time -- Founding Frontend Engineer -- Founding Machine Learning Engineer We are building the unified data platform, starting with a reimagined, modern, AI-enabled SQL editor - and will move into sharing, collaboration, access controls, and more.

We launched the alpha 3 weeks ago to 100 people on our 2K waitlist (and growing) and the feedback was INCREDIBLE. There is massive pull for this product and NOW is the time to build this :)

Mitch Bregman (linkedin.com/in/mitchbregs), me (Garrett Wolfe - linkedin.com/in/garrettawolfe) and one friend (TBA) started Galaxy as a passion project to solve 3 key problems:

1. Queries everywhere – SQL lives in Slack snippets, BI folders, dusty Git repos, and copy-pasted Notion pages.

2. Never-ending data requests – because no one can find (or trust) the right query, engineers and analytics teams still get pinged for “one more pull.”

3. ChatGPT doesn’t have full DB context - non technical users are writing incorrect SQL that lacks context AND technical users are rewriting the same queries over and over again

LOOKING FOR: We're looking for high agency, high velocity individuals and someone who wants to be part of a family. We are building ~the unified data platform~ and want someone who is excited to be part of the story.

APPLY: To apply friend me on LinkedIn or shoot me an email with your profile at hello@getgalaxy.io

BCC | Platform Systems Engineers | Bethesda MD | ONSITE or REMOTE, VISA | Competitive compensation! | https://www.ncbi.nlm.nih.gov

Black Canyon Consulting (BCC) is hiring Platform Systems Engineers of all levels to join our team at the National Center for Biotechnology Information (NCBI). Our team is dedicated to building cutting-edge tools and systems. Our mission is to empower developers across NCBI to build, deploy, and manage software, data, and web services that make a real difference in the lives of millions of Americans.

Your contributions will play a crucial role in modernizing government technology infrastructure, fostering innovation, and ultimately making a tangible impact on communities across the country and globally. This is your chance to be part of a mission-driven team that’s shaping the future of digital government.

Tech: Linux, k8s, Service Mesh, Kafka, GitLab, ArgoCD, Elastic APM, Python, C++

DevEx Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/... Sr DevEx Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/...

DataOps Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/... Sr DataOps Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/...

Plaform Eng Manager: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/...

Office Hours | Software Engineer, Senior/Staff Software Engineer | SF, NYC, or Remote (US) | https://officehours.com

Office Hours is a consulting platform and marketplace. We connect businesses with experts, and experts with opportunities to get paid to share what they know.

On the surface, it's a simple marketplace: search, match, connect, and pay. Under the hood, we're tackling some fun and interesting engineering challenges.

- Search & Discovery: Surface the right experts instantly

- Data & Recommendations: Build a knowledge graph from scratch to power better insights

- Workflow Automation: Streamline complex, multi-step processes with AI

- Performance & Scaling: Ensure speed, reliability, and scalability as we grow

We’re a small, senior team that values quality, curiosity, and collaboration. If you’re excited about building thoughtful user experiences and high-quality software, apply below—we’d love to chat!

Open roles:

- Senior Backend Engineer (6+ years): https://job-boards.greenhouse.io/officehours/jobs/4459251008

- Full-Stack Product Engineer (3+ years): https://job-boards.greenhouse.io/officehours/jobs/4572836008

P.S. Let us know in the application that you found us on HN. It helps separate signal from noise.

Privy | NYC or Remote | Staff engineering roles (Backend, Frontend, FDE, Security & more) | Full-Time | https://privy.io

Hi, I'm Asta, CTO at the identity and fintech infra startup Privy. We build a wallet and digital asset API that hundreds of companies integrate in order to onboard (75M+) users onto products built with blockchain infra and distributed systems.

Our mission is to power digital ownership for all users. We believe that using digital assets to power money movement online is the next frontier for user ownership and financial empowerment. We're building foundational infrastructure that enables this.

We're a small, high-ownership team building a product with incredibly scaled usage (>12M MAUs, massive transaction volume). We've raised $40M from Ribbit & Sequoia. We ship constantly, multiple production releases every week.

Oscilar.com | Sr/Staff Software Engineers | REMOTE (US/Canada/UK) | Full-time

AI Risk Decisioning™ platform that helps organizations manage onboarding, fraud, credit, and compliance risks

Oscilar is a first-of-its-kind real-time, AI-powered risk decisioning platform that brings real-time data, AI and decisioning together in a way that's never been done before to create the most advanced credit and fraud detection platform. Our AI Risk Decisioning technology enables companies to expediently and accurately assess the risk of every online transaction in a few milliseconds.

Open roles:

- Staff Software Engineer - Gen AI

- Senior/Staff JavaScript - Web SDK

- Senior/Staff Software Engineer - Front-End

- Senior/Staff Backend Engineer - Kafka

- Staff Backend Engineer - Databases

- Sr/Staff Data Scientist

- Senior Android Developer

- Senior iOS developer

- Senior/Staff Backend Engineer

Why Oscilar? - Founded by the Founder of Confluent (8.45B) and Kafka

- Winner of Best AI solution for Risk Management & Fighting Fraud - PayTech Awards 2025

- Remote-first culture - work from anywhere

- Unlimited PTO

- 100% of Medical, Dental and Vision covered for you and your dependents

- 401k; Home Office setup assistance; & Learning and Professional development opportunities

- Regular team events and offsites

- Making the Internet Safer by protecting online transactions

Apply to david.suniga [at] Oscilar.com

Nooks (https://nooks.ai) | Software Engineers (full-stack & backend/applied ML) | Full-time | Onsite in SF (hybrid)

Hi, I'm on the recruiting team at Nooks — we’re a Series B co using AI to reimagine the future of work for sales teams.

- What: Our AI Sales Assistant Platform (ASAP) automates the busywork in dialing, prospecting, and coaching so reps can focus on the human side of selling. Learn more here: https://www.nooks.ai/blog-posts/series-b | https://www.nooks.ai/blog-posts/why-all-engineers-need-to-le...

- Fun engineering challenges: These include complex distributed systems, low-latency algorithms & infrastructure, and modeling sales calls with large language models. You'll also have the chance to make a huge impact on our customers (sales reps who spend 80% of their work day on Nooks.)

- Funding and traction: We closed a $43M Series B from Kleiner Perkins in Q4'24. We 4x’d ARR in both 2023 and 2024. We've had tremendous revenue growth since closing the B, acquiring customers like Hubspot, Windsurf and LaunchDarkly.

- Team: Our team includes many former unicorn early team members and founders, as well as multiple IMO/IOI medalists

We're looking for experienced engineers and an EM. To work at Nooks, you should love tackling difficult product questions and working closely with customers. Excitement about language models, few-shot learning and other recent AI advances is also a plus :)

Drop me a note if interested: kev [at] nooks.in or apply at the links below: Product Engineer https://www.nooks.ai/careers?ashby_jid=7091d714-5c22-452a-97... | EM https://www.nooks.ai/careers?ashby_jid=6d1342db-e2d4-47ac-8f...

Treeline | Senior Software Engineer - Core Platform / AI | Hybrid (SF or LA) | Full-time

We’re a small team attacking the $150B managed service provider (MSP) industry by building a vertical AI powered software stack to run our own provider. You’ll own and work with everything from distributed queues and data lakes to prompt evaluation and agentic orchestration.

Check out the JD here: https://treeline.ai/senior-software-engineer-job-description...

It links to a puzzle I wrote, would love to hear what you think. Email me at hussain [at] treeline [dot] ai

Mapistry | Berkeley, CA | Full Time | On-site / Hybrid | Full-stack Software Engineer https://bit.ly/4n1fTVK

Mapistry is looking for an experienced engineer to join our small team, building the environmental compliance command center used by hundreds of manufacturing facilities. If you have always wanted to work on a product that has a meaningful impact on the world and love working at startups, Mapistry could be the place for you.

Please apply with the link above.