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 Email is hidden 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 Email is hidden 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 Email is hidden

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

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