Yelobird | Berlin | full time | senior full stack engineer | 75.000 to 140.000€

What we're looking for

We need someone deeply skilled in TypeScript and React who works quickly, efficiently, and with a bias for action. You should be comfortable implementing changes end-to-end and have a track record of delivering high-quality work at a very fast pace.

Bonus points if you have active contributions to open-source projects, deployed side/hobby projects, or experience in starting a company or working at a very early-stage startup.

https://www.paraform.com/apply/cmehos59e0042jo0c6uvz2ar6

Zigment (https://zigment.ai) | Bangalore / Bengaluru, India | Full-time | ONSITE

Zigment is a customer journey platform. We make it super simple to build AI agents for enterprises.

Why should you join us?

- Small & lean tech team. - See AI in action with enterprises. - Build reliable & scalable AI systems. - Passion for tech & AI. - Access to the latest AI coding & productivity tools.

Open Roles (Hiring):

- Software Engineer - Forward Deploy Engineer (Agent). (Fresher/Interns). - Project Manager / Delivery Manager. (From Services or Product-based companies)

For SDE, you will need experience with TS/JS/Python.

Location: Bangalore, India

* We are also accepting interns & new graduates. Feel free to send the email below. *

To apply:

Send your resume to contact@zigment.ai with "Saw HN Post" in the subject line or mentioned in the email.

Our process is speedy. Looking forward to your application.

PostHog | Full-Time | Product engineers, developer who loves writing/marketing, Technical AEs | REMOTE (all remote) | Hiring GMT-8 to GMT+1

PostHog helps engineers build better products by combining product analytics, feature flags, session replay, a data warehouse, CDP and many more.

* we have a public handbook (posthog.com/handbook) if you want to learn how we work, pay and more in complete detail.

* we are growing through more autonomy and transparency not through process.

* we have a ton of scale and a bunch of super interesting technical problems to solve

* we're building 20 more products over the next couple of years, so you could end up building one of those

* we need: product engineers, developer who loves writing and a developer who can do marketing, sales ops backend engineer, clickhouse engineer, technical account executives and technical customer success managers.

posthog.com/careers

Charlie Labs | Remote (Global) | Full-time | TypeScript code agent

We’re building an AI teammate that fixes bugs, writes features, and reviews PRs asynchronously. Small team, big surface area.

Open roles

Full-Stack Product Engineer (TS/React, Next.js, design-system chops)

Backend Engineer (event/queue systems, GCP, BigQuery, observability)

AI Engineer (LLM agents, eval-driven iteration, tool use, reliability)

Developer Relations (TypeScript demos, fun stuff, talks, OSS)

Our stack TypeScript across the stack - GCP (Cloud Run, Pub/Sub, BigQuery, IAM, Secrets)

Why Charlie? Tiny team → outsized ownership and velocity Remote-first, async-native; few meetings, lots of shipping Real runway (seed $10M) and meaningful equity

Email hello@charlielabs.ai with your GitHub + LinkedIn (or resume)- https://charlielabs.ai/careers

9 Mothers Defense | Robotics Eng. & Computer Vision / Data Scientist | Hybrid (Austin TX) | Full-time

Building AI-driven turrets that stop hostile drones. We need sharp, hands-on engineers:

Embedded Robotics: Python on Jetson, CAN (+ EtherCAN / EtherCAT) drive buses, high-speed cameras, real-time PID/servo control, ROS, TensorRT

Computer Vision / ML: detection + tracking, transformer-based visual models, TensorRT tuning on Jetson

US persons only (e.g. green-card, citizens). Shoot your résumé / GitHub and a quick note on why you're good fit to jobs@9mothers.com

I've applied half dozen times to positions in Mumbai, India but haven't heard back once from Betterstack.

Citymapper by Via | London, UK | Onsite or Hybrid (London, UK and New York, USA) | VISA

We are building the ultimate technology for mobility in cities. We are hiring

- Engineering Manager (London): https://job-boards.greenhouse.io/via/jobs/8001882002 - Director of Engineering (London): https://job-boards.greenhouse.io/via/jobs/8074378002

More roles at https://job-boards.greenhouse.io/via

Backend tech stack includes: AWS, Python, some C++, some Rust, EKS, Terraform.

Formal | Multiple Positions | REMOTE | Full-Time | $100k - $250k + Equity

At Formal [0], we’re rethinking serverless from scratch: we’re building a new computing stack for instant, globally available, truly elastic, soundly isolated execution. We leverage formal methods and languages to build OS interfaces with low overhead, formally verified isolation without containers or VMs. Our immediate goal is to write a new programming language to replace eBPF and build the world's first serverless networking infrastructure.

We are a 5-person, VC-funded team with PhDs from Stanford, UW, OSU, and Brown, advised by professors from MIT and UWaterloo. We are currently hiring for the following four positions:

- [1] Staff Software Engineer: Compilers, Programming Languages, and Verification (≥ $200k + ≥ 0.5%)

- [2] Formal Verification Engineer: Formal Methods and Programming Languages ($120k - $200k + ≥ 0.25%)

- [3] Software Engineer: Compilers and Programming Languages ($100k - $175k + ≥ 0.2%)

- [4] Formal Methods PhD Intern: Formal Methods and Programming Languages (≥ $5k / month)

Please see [5] for general information. To apply, email us at (work at formalstack dot com) and let us know how your experiences fit the role and its requirements.

[0]: https://formalstack.com [1]: https://formalstack.com/jobs/09-2025/staff-software-engineer... [2]: https://formalstack.com/jobs/09-2025/formal-verification-eng... [3]: https://formalstack.com/jobs/09-2025/software-engineer-v.pdf [4]: https://formalstack.com/jobs/09-2025/formal-methods-phd-inte... [5]: https://formalstack.com/jobs/09-2025/info.pdf

We're building the serverless platform that powers millions of developers at the edge. Looking for passionate engineers to shape the future of edge computing.

Engineering Manager, Workers Runtime - Lead our multi-language support (JS/TS, Node.js, Rust, Python). Drive technical vision while building an incredible team. https://rb.gy/kmjt2b

Principal VM Engineer, Workers Runtime - Optimize V8 usage and JS/WASM virtual machine capabilities. Push the boundaries of what's possible at the edge. https://rb.gy/00o7a4

Senior Software Engineer, Workers Runtime - Key contributor across our technical domains. Help us innovate and scale the platform powering the modern web. https://rb.gy/095923

We're at the heart of distributed systems, runtime optimization, and developer experience that impacts millions worldwide. Feel free to reach out directly or apply through the links.

Continua AI | https://continua.ai | Multiple Roles | ONSITE (NYC/Seattle) | Full-time | Salary + Equity

At Continua (http://continua.ai/), we're on our way to solving Social AI, and we're expanding our team! We've built an AI agent that users can invite into group conversations to make planning, coordination, and information retrieval effortless. We're social creatures and it just seemed to us a huge opportunity to bring AI into group settings. We've seen strong retention over the last few months and want you to help us bring our product to the next level. Try adding our agent at http://continua.ai/ to group chats and kick the tires!

I’m David (https://www.linkedin.com/in/dpetrou/), the founder and CEO. Before starting Continua, I was a Distinguished Software Engineer at Google. We’re backed by top-tier VCs and incredible angel investors. Our team is a fantastic bunch (http://continua.ai/team) of accomplished engineers and researchers from Google, Slack, Disney, and several AI startups. We're pretty clued in on the technology side and have a strong vision of how the transformative technology of the last few years along with our own secret sauce (not just a ChatGPT wrapper) can help a huge number of people.

We’re hiring a Senior/Staff Machine Learning Engineer: https://jobs.ashbyhq.com/continua/

You'll work on building and improving the best LLM group chat experience there is, including fine-tuning models to boost conversational quality and improve scalability and identifying novel ways to build a "memory" which leads to a personalized and unique experience for our users. You're an experienced machine learning engineer with broad knowledge and skills and have experience fine-tuning LLMs for both generative and discriminative use cases. You have a Master's or PhD in Machine Learning (or a Bachelor’s with exceptional industry experience). You understand what it means to work at a fast-moving startup.

Oh, and we maintain a vibrant blog, including items of technical interest, at http://blog.continua.ai/. Check it out! :)

David

MONUMENTAL | https://www.monumental.co/ | Amsterdam, The Netherlands | Full Time | Onsite

We make robots that autonomously construct buildings. We are currently developing and manufacturing our autonomous bricklaying system in the beautiful centre of Amsterdam. And our robots are already earning real revenue operating on construction sites all over the Netherlands.

We're looking for experienced FULL-STACK ENGINEERS who can help us solve problems like:

- Data sync and analytics queries across a fleet of robots (that can be offline for hours at a time)

- Rapid deployment and iteration of experimental software changes across firmware, control software and UI

- Modelling buildings in code and finding the right UI for operators to edit them

Check out the progress we've already made on Atrium, our operating system for robotics: https://www.monumental.co/atrium

We're rapidly scaling up operations and we need experienced, generalist engineers who can build the systems that manage all of that complexity. If you think that 'full-stack' could reasonably mean debugging firmware, mixing buckets of mortar _and_ writing React components, we are looking for you. Robotics experience not required!

https://www.monumental.co/jobs

Nebula | Multiple roles | Remote/Onsite NYC preferred | Full-time

Nebula is building a modular blockchain stack to make on-chain finance faster, fairer, and more efficient than off-chain. The stack has 3 parts:

1. Execution environment – combines Rust + Sovereign SDK for highly performant, expressive private apps (e.g. solving latency asymmetry in exchanges). 2. Privacy protocol – blends cryptography + privacy hardware for verifiable, fast programmable privacy. 3. Nebula Exchange – a hyper-performant exchange using batch auctions + private orders to eliminate latency asymmetry and guarantee best prices. We’re hiring ambitious engineers to join the core team:

- Frontend (React/TS/Next.js) – focus on architecture, design systems, interactivity, realtime apps, Figma → production.

- Backend (Rust/Go) – core infra + SDK integration.

Requirements: detail-obsessed, independent problem solver, thrives in chaos, good communicator, can work ET hours. Nice to have: exp. in financial exchanges, realtime data-heavy apps, web3. Note: workload can be intense (sometimes 80+ hrs/wk).

If this challenge excites you, send CV → nebulaexchangejobs@gmail.com

Cogram | Full-time | Remote (CET ±3) | https://cogram.com | B2B SaaS / AI for AEC

Cogram is a productivity platform for the architecture, engineering, and construction (AEC) industry. We automate core workflows including meeting notes, site reports, email management, project administration, and RFP bidding. We're backed by YC, Initialized, and other well-known Silicon Valley investors. We believe small, focused teams can deliver outsize results.

We're hiring exceptional engineers and designers (all senior roles, hands-on, ship to production):

- Senior Full-Stack Engineer (backend-heavy, Python; 8+ years). Expert Python, Terraform and CI/CD, experience with AWS/Azure, comfortable working in React/TypeScript when needed.

- Senior Full-Stack Engineer (frontend-heavy, UI/UX; 8+ years). Deep React/TypeScript expertise, strong sense for UI/UX, proven track record of shipping user-facing products, comfortable stepping into backend.

- Design Engineer (UI/UX & frontend; 5+ years). Strong portfolio required, Figma → React experience, experience covering the full design cycle and working closely with customers to turn ambiguity into clear specs.

Stack: Python (FastAPI), Postgres, Redis, React/TypeScript, React Native/Expo, Terraform on AWS & Azure. Benefits: Fully remote, three off-sites/year, ~38 paid days off, competitive salary + equity.

Apply: Email r+hiring[at]cogram[dot]com with links (GitHub / LinkedIn / portfolio [required for design engineer]) and a short note.

Synca | Stockholm (EU Remote ok) | Senior Frontend Engineer | Full-time | Salary + Equity

We're looking for a talented Frontend Engineer to help build the future of business intelligence.

Synca uses AI to determine who in an organization needs to know what, and allows them to take immediate action. With the flood of information in todays age, people don't know what they need to know. We fill this gap and empower everyone to be experts in their domain.

We raised funds from and landed a strategic partnership with a leading consultancy in Europe's AI capital and are looking for someone to join us in our journey to the next level.

Please apply at https://wellfound.com/l/2BAFNX

We look forward to hearing from you!

https://www.synca.ai/

Faction | Founding Engineers | ONSITE (SF) - we sponsor visas | Full-Time | $130,000 - $225,000 + equity | https://www.usefaction.com/

Faction is building autonomous AI for industrial distributors and manufacturers. Our mission is to accelerate the $2T industrial commerce market, and enable physical infrastructure to move as fast as the digital economy.

We’re looking for Founding Engineers who want to build software that runs real businesses. You should bring:

Who we are looking for:

- Strong experience with Next.js, TypeScript, Python (FastAPI), and PostgreSQL

- Deep knowledge of LLM research, agents, tool calling, and robustness

- Comfort with intensity and long hours in a small, fast-moving team (we operate 9-9-6)

- Ambition to shape our technical culture and roadmap as a core founding member

For more info: https://docs.usefaction.com/careers. Email Resumes/GitHub: kunal@usefaction.com

Class Central | Senior Full Stack Engineer | Remote | https://www.classcentral.com

I'm looking for a senior engineer to take ownership (from me) of Class Central's codebase and infrastructure.

We help tens of millions of learners find the best courses on any subject. Small team (6 people), profitable, independent, and around for 13+ years. No VC drama, just sustainable growth.

Stack: PHP 8+, Symfony 7+, MySQL, Elasticsearch, Google Cloud. We keep it simple and productive.

Own the full stack, help shape our product, and build pragmatic solutions for our current scale. I am looking for product-minded engineers who are focused on user experience and driven to understand the business.

I'm building a new cross-functional product team from scratch (engineering, product, design). Looking for a foundational engineer who can mentor, collaborate, and help define how we work together.

Remote-first, async, very few meetings. Real autonomy, real impact. Fair warning: being fully remote means no annual Halloween Heists.

While I don't have a formal job post up yet, if you're at that point where this feels like the right next step, I'd be happy to hear from you: careers@classcentral.com

Temporal Technologies | Multiple positions in United States - WORK FROM HOME | FULL-TIME |

Temporal offers an entirely new way to build scalable and reliable applications. Temporal enables developers to focus on writing important business logic, and not on managing state or worrying about the underlying infrastructure. Sequoia Capital led our last round of funding and our team has experience from start-ups and larger companies like Microsoft, Google, Amazon, Uber, and more.

Temporal’s Series C Funding Announcement: https://temporal.io/blog/temporal-series-c-announcement

Temporal in 7 minutes: https://temporal.io/tldr

We're looking for senior level engineers for multiple roles - see here - https://www.temporal.io/careers

FEATURED ROLES:

Senior Developer Success Engineer → https://grnh.se/ed5cec6a7us

Staff Software Engineer, Traffic → https://grnh.se/1cbb896d7us

Staff Software Engineer, Cloud Infrastructure → https://grnh.se/8b0ba8347us

Staff Developer Advocate, AI - San Francisco → https://grnh.se/00dec64f7us

Senior Product Manager, Cloud Scalability & Capacity → https://grnh.se/6a766cv77us

Senior Software Engineer, Developer Productivity → https://grnh.se/jdr272cz7us

Staff Software Engineer - Cloud Capacity → https://grnh.se/a0hc6o6h7us

US benefits include: Unlimited PTO, 12 Holidays + 2 Floating Holidays, 100% Premiums Coverage for Medical, Dental, and Vision, AD&D, LT & ST Disability and Life Insurance , Empower 401K Plan, Additional Perks for Learning & Development, Lifestyle Spending, In-Home Office Setup, Professional Memberships, WFH Meals, Internet Stipend and more! Benefits outside the United States vary by country.

Apply here https://www.temporal.io/careers/

Better Stack | [https://betterstack.com](https://betterstack.com/) | /^(Full-?stack|Backend) Engineer$/i | Europe remote in UTC ± 3h

We are software builders at :heart:

CEO is a software engineer, COO is a software engineer and you guessed it; CTO is an engineer, too. We are engineers, making the tools we always wanted. If you love building amazing software, you're at the right address.

We are looking for software engineers who, if given enough time, could build Better Stack on their own = looking for Full-Stack/Product Engineer/Generalist to help us create high-quality software with exceptional UX—end to end.

Apply at https://betterstack.com/careers/fullstack-engineer

How we operate:

https://betterstack.com/careers

https://betterstack.com/careers/engineering

[https://juraj.blog](https://juraj.blog/)

Dash0 | Multiple roles | FULLY REMOTE | Full-time | Salary + equity

Dash0 is a fast-growing, venture-backed startup on a mission to make observability radically easier for every developer.

We fully embrace OpenTelemetry, Prometheus, and open standards, and our “welcome present” to the OpenTelemetry community, OTelBin, a free tool for editing, visualization and validation of OpenTelemetry collector configurations, is being extremely well received by the community.

We’re currently hiring in multiple roles across engineering, design, and product:

* Senior Product Engineer – Backend (Remote EU)

* Senior Product Engineer – Kubernetes Operator (Remote EU)

* Senior Product Designer – Observability (Remote EU)

* Senior Technical Writer (Remote)

Apply here: https://careers.dash0.com/

Channel3 | NYC | $120–200K + 0.5–1.5% equity | Full-time

Channel3 is hiring a Founding Engineer to help us build a database of every product on the internet.

Our API lets any AI app or agent add shopping capabilities and earn commission on sales. As commerce moves from in-store, to online, to AI-native, this universal product catalog becomes critical infrastructure. We see Channel3 becoming as foundational to AI commerce as Stripe is to payments or Plaid is to fintech.

We just closed a $6M seed round led by Matrix (Apple, FedEx, AfterPay) with participation from Ludlow (Honey, StockX), Y Combinator, and Paul Graham. We're live with 500+ developers on our API and millions of products processed daily.

We're looking for engineers who want direct ownership of technical decisions, love solving hard problems at scale, and want to help build our team and culture from the ground up.

This role is in person, 5 days a week, in NYC. Unfortunately, we cannot sponsor visas.

Apply at https://bookface.ycombinator.com/company/30695/jobs/80837 or email founders@trychannel3.com, sharing a few bullets on a project you built 0-1 and your resume/LinkedIn.