Promise | Senior Backend Engineer | Oakland or Washington DC | Hybrid/Onsite | Full-Time

Promise (YC W18) is building modern payment infrastructure for the government. We help people stay on track with rent, utilities, court fines, and more—without falling into cycles of debt or incarceration. It’s complex, high-scale work with real human impact.

We're hiring a Senior Backend Engineer to join our team in either Oakland, CA or Washington, DC. This is a hybrid role with 3 in-office days per week.

Tech stack: Python, Node.js, Postgres, AWS, GCP, Terraform, Docker, TypeScript

What you'll do:

* Build and scale distributed systems that power payments and communication for millions of users * Work closely with our product and infra teams to design and deploy production-grade services * Own backend projects from architecture through execution * Help modernize systems used by cities, counties, and states across the country

You might be a fit if you:

* Have 4+ years of backend engineering experience * Have worked on complex systems at scale * Are excited by mission-driven work and product ownership * Are based in the US and authorized to work here

Compensation: $150K–$215K base + equity + full benefits (100% health/dental/vision for you and dependents)

Apply here: https://www.ycombinator.com/companies/promise/jobs/vfvgxy8-s...

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

[1] Senior Software Engineer, back-end Go (US/Canada, Remote)

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

[3] Staff Software Engineer (Front-end), TypeScript/React (UK/Ireland/Poland, Remote)

[4] Product Operations Engineer (US)

[5] Product Manager (US)

[6] Solutions Architect (US)

[7] Software Engineer, VS Code Contractor (US/Canada/UK/Ireland/Poland)

Coming soon - Sales Engineer, Senior Cloud Partner Sales Manager

I support all recruiting for our global team, you can reach me directly with any questions at Email is hidden. Please note that you must submit an application to be considered for any of these positions.

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

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Lovable (https://lovable.dev) | Stockholm + NY + London + hybrid | Full-Time | Product+Research Engineers

We’re a small team caring deeply about building a product that move people’s lives. Currently, 70,000 new apps are started every day with lovable, many of them becoming real businesses that earn people’s livelihood.

You would work with a highly talent-dense team of previous founders, CTO:s, Physicists, with many problems to solve as we are scaling towards reaching $100m ARR faster than any other startup.

We’re looking for:

- Product Engineers

- Research Engineers

Read more and apply at: https://lovable.dev/careers

Monad Foundation | Senior Full Stack Engineer (Web3) | Full-Time | Remote

Job Description: https://jobs.ashbyhq.com/monad.foundation/2242c712-d2cf-4fe5...

Tech Stack: Typescript/Javascript, React/Next.js, Node.js, Solidity

The Monad Foundation is a team of dedicated ecosystem and community builders who are on a mission to massively grow the impact of decentralized tech. We believe that the Monad blockchain--the performant and parallel EVM Layer 1--will help decentralized apps eat the world.

For more info, please visit www.monad.xyz or our careers page (https://jobs.ashbyhq.com/monad.foundation)

Chronograph (chronograph.pe) | DevOps Engineer | Full-Time | Remote (US) | $140-160K USD + equity

Chronograph was founded to bring next-generation technology to private capital markets. Through our suite of cloud-based analytics and data management solutions, we help many of the world’s largest and most sophisticated venture capital, private equity, and credit funds understand their investment performance in unprecedented detail.

We are looking for a candidate with a generalist background in software development, including 3-5+ years of experience on DevOps, Platform Engineering, Site Reliability Engineering (SRE), or MLOps teams. You’d be joining a small cross-functional team and have the chance to make critical contributions as we scale our engineering team and business.

Our ideal candidate has a passion for automating ops, troubleshooting infrastructure, and creating first-class developer experiences. On top of that, expertise with the following (or similar) tools/technologies is a strong signal of fit: Kubernetes, Prometheus, Grafana, Terraform, AWS, GitHub Actions, PostgreSQL, Node.js, Ruby on Rails, Nix, and Docker.

Note that while this is a remote position, travel to our NYC HQ 3x/year for "team week” on-sites is required.

If interested, apply here: https://grnh.se/1q1yybxf7us

Treez | Multiple roles | REMOTE (India) | Full-time |

We’re a Series C US-based startup building an SDK and a platform that powers compliant payments in regulated industries. You’ll join a high-context, low-process team that’s built critical systems. We care about clean abstractions, good alerting, and boring reliability.

—

Senior SDE:

- Have 5–8 years experience designing and building backend systems (we mostly use Node.js, Python, Postgres).

- Can lead projects, unblock others, and reduce scope smartly to ship.

- Know tradeoffs between queues, retries, transactions, and idempotency.

- Can jump on production issues with clarity.

- Love mentoring, reviewing PRs, and simplifying messy systems.

- For more details: https://hasjob.co/treez.io/tfm7q.

—

SDE 2:

- You'll own critical paths in our payments stack — from clean APIs to resilient integrations.

- Design for reliability, idempotency, and scale in a high-throughput system.

- Reduce complexity: improve latency, simplify data flows, automate root cause visibility.

- Shape the system, not just the code — with engineers who think in invariants.

- For more details: https://hasjob.co/treez.io/gnvpl.

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Say hi even if you’re not actively looking — we love meeting curious engineers.

Trellis Education | Founding Full-Stack Engineer | London (hybrid) | Full-time | https://trelliseducation.co.uk/

AI-powered Admin for Additional Support Needs Teachers. We recently won CivTech 10, giving us amazing access to teachers and political leverage to make something exception happen in this space. Join a multi-award winning team, dedicated to using AI to helping the people who look after vulnerable members of our society.

For more details and to apply, see https://trelliseducation.co.uk/careers/full-stack-engineer Any question, reach out to Email is hidden

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

We make it super simple to build AI agents for sales & marketing teams. Zigment is a customer journey platform.

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.

Roles:

We are hiring for software engineers and forward-deploy/integration engineers.

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.

MENTZ | C++ Algorithm Engineer | ONSITE (Munich) | Full-Time

MENTZ builds software for public transit agencies and authorities. One big part of our portfolio is an intermodal journey planning system - think Google/Apple Maps, but with a strong focus on public transit.

We're looking for a C++ backend dev to join the team working on the public transit router. We are currently in an exciting phase where we're working on the current and next generation of that public transit router simultaneously, so this position combines the possibility of having an immediate impact on a widely used product and working on something brand new.

More details (and a way to apply) are available here: https://en.mentz.net/jobs/c-algorithm-engineer-for-public-tr...

If you have any questions, you can contact us at Email is hidden.