Trunk | https://trunk.io | DevRel Engineer - Remote US or Canada| Staff Full Stack Engineer | Sr Full Stack Engineer - San Francisco

Trunk is an a16z funded dev tools startup, redefining software development at scale. We aim to solve problems that developers hate by bringing the tools usually built in-house at the best engineering orgs to every development team. Some of our products:

  * Merge Queue: a merge queue, to ensure that PRs are tested in order before they're merged.

  *Flaky Tests: Detect and eliminate Flaky Tests.

  * AI DevOps Assistant: Automate Reccurring DevOps tasks in chat.

In 2022, we raised a $25M Series A led by Initialized Capital (Garry Tan) and a16z (Peter Levine)

Our tech stack:

  * Frontend: Typescript, React, Redux, Next.js
  * Backend: Typescript, Node, AWS, CDK, k8s, gRPC
  * Observability: Prometheus, Grafana, Kiali, Jaeger
  * CLI: C++20, Bazel
  * VSCode Extension: Typescript
  * CI/CD: GitHub Actions
  * General: GitHub, Slack, Linear, Slite

Unlimited PTO (and we all actually take PTO), competitive salary and equity packages! Please apply here: https://trunk.io/jobs

SewerAI | https://www.sewerai.com/ | Staff Full-Stack Engineer | SF Bay Area Hybrid | Full-Time

About us: SewerAI is an AI-powered platform modernizing how cities and engineering firms inspect and manage sewer infrastructure. Using computer vision and geospatial analysis, we’re cutting costs, improving safety, and transforming how critical infrastructure is maintained.

Role: You’ll own features end-to-end: from AI-driven video analysis and mapping dashboards to scalable APIs and polished React frontends. Engineers on our team ship impactful projects like automated defect detection, real-time geospatial dashboards, and large-scale data pipelines.

Our Stack: React + TypeScript, Fastify, PostgreSQL/PostGIS, Prisma, Temporal.io, AWS, Docker, CI/CD.

What you bring: 5+ years full-stack experience with TypeScript, React, Node.js, and PostgreSQL. Bonus for geospatial, computer vision, or AWS.

Why SewerAI: High-impact work improving infrastructure communities rely on. Series B. Hybrid SF Bay Area (2 days/week). $180K–$230K + equity, full benefits, unlimited PTO.

Interested? Apply directly at: https://ats.rippling.com/sewerai-careers/jobs/be01efaa-2168-...

ARound (web-based augmented reality for sports) https://aroundar.com - a Stagwell company - https://www.stagwellglobal.com | Backend Engineer | Remote (Based in UTC -8/-7/-6/-5/-4 timezones only) | 20-40 hours a week TBD | Contract or contract-to-hire

Backend development in support of web-based augmented reality experiences and games for mobile devices. API integration and development. Management of cloud infrastructure and services.

Key technologies are Node.js, Rust, PostgreSQL, Digital Ocean. Experience with video streaming (RTMP, WebRTC). Some degree of familiarity with TypeScript, Vue.js, and Babylon.js is desirable.

Strong interest in sports is ideal (although fandom is optional).

I’m the hiring manager, no intermediaries. I’m not interested in hearing from outsourcing agencies or recruiters. Candidates only, please. Thank you. : )

raven@aroundar.com

Seeq | https://seeq.com | Staff Software Engineer (Full stack) | REMOTE (Some crossover w/ PST required) | Full-time | $140k - $180k + equity. Salary range for US-based; local adjustments for other countries. Seeq creates cutting-edge data analytics software for industrial process data, serving sectors like pharmaceuticals, energy, and manufacturing. Our core product is a robust calculation engine capable of executing advanced math and machine learning algorithms on streaming time-series data. By leveraging generative AI, we enhance usability and accelerate outcomes for our users.

We've built up a great remote culture (e.g. annual meetups, a remote office app we created to collaborate) and a dev team that enjoys tackling hard problems that make a difference for our customers (dev blog for more: https://geeq.seeq.com/).

Staff Frontend/Full stack Engineer (React, Typescript, Kotlin): https://apply.workable.com/seeq/j/D08DA1A63C/

Hardfin | Full-stack engineer | Denver metro, CO or Bay area, CA (REMOTE or ONSITE) | CA/CO ONLY | Full-time | 150k-180k salary

Hardfin is a B2B software platform for equipment manufacturers that enables them to track their assets and manage projects for their hardware. We are looking to add another fullstack engineer that can wear a bit of a product hat and is comfortable with "figuring it out" as they build.

Short and transparent hiring process, 30 min intro call, 30 min tech screen, 30 min vision/product call, 2hr technical test, 45 min culture fit call, offer. No panels, no leet code questions.

Requirements: 5+ YoE, 3+ Go, 1+ Typescript, 6+ months of working with AI assisted IDE/tooling.

See the full job rec/apply at https://wellfound.com/l/2Bs5iM

You can reach me directly at bweisbart -at- hardfin (.) com, please include "HN" in the email subject so I can prioritize a response to you.

VitVio | Senior Full-Stack Engineer (Elixir, NixOS, React) | Remote (EU Timezones) | Full-Time | vitvio.com

We're building AI-powered systems to make hospital operating rooms safer and more efficient. We're looking for a seasoned engineer who values clean code, robust architecture, and a collaborative culture. You'll join a small, strong team and will have a massive impact on a product used in high-stakes clinical environments. We are looking for engineers with strong fundamentals, and who knows how to work efficiently in a team through code reviews and version control.

Tech: Elixir (Phoenix), NixOS, React, TypeScript, C++, Postgres, GraphQL, Google Cloud Provider.

We're looking for deep experience in at least Elixir or NixOS.

Apply and see more details here: https://jobs.ashbyhq.com/vitvio/5d9782f2-3834-429b-be99-dfbc...

We review applicants on a weekly basis.

Connie Health | https://www.conniehealth.com/ | Multiple senior engineering roles | Hybrid (Boston, MA) | Full-time

Connie Health is a fast-growing startup on a mission to empower older Americans to make confident, worry-free healthcare decisions. Backed by leading investors such as Khosla Ventures and Pitango, we are building technology to transform the trillion dollar Medicare insurance industry, impacting the lives of 67 million people in the US. You will work at the intersection of the latest in applied AI/ML, software engineering, product, and infrastructure to build our best-in-class Medicare navigation and sales platform.

We are looking to fill multiple positions on our rapidly growing engineering team, based out of Boston, MA:

Lead AI/ML Engineer | $152,000 - $182,000 + equity

Responsibilities: Player-coach role, leading a small team of AI/ML and software engineers to build our top-of-funnel systems. Tech Stack: Python, "traditional" AI/ML model building tools (scikit-learn, PyTorch, XGBoost), LLMs, AWS, Aurora/Postgres, Redshift

Senior Backend Engineer | $130,000 - $156,000 + equity

Responsibilities: Build the core backend systems that power our top-of-funnel, such as tracking leads through various channels, integrating with affiliate partner marketplaces, working with AI/ML engineers to build our lead bidding models, dynamically mapping leads to agents, and AI-based lead pre-qualification. Tech Stack: TypeScript + NestJS, Postgres, AWS, Docker + Kubernetes

I am Huan, CTO at Connie Health. If you are interested, please feel free reach out to me directly at with your resume: huan.lai (at) conniehealth.com !

MITTE.AI | Berlin, Germany | REMOTE (Europe/+- 2h timezone) | FULL-TIME | AI Creative Suite

We're building an AI Creative Suite that empowers creators with cutting-edge AI models and an advanced editor.

Join our team in Berlin or work remotely within +- 2 hours of our timezone (Europe, Türkiye welcome).

MITTE IN ACTION

https://x.com/azerkoculu/status/1945391849989976533 https://x.com/MaxVOAO/status/1961441059235352579

TECH STACK

Go, Elixir, TypeScript, React, Redux Toolkit

ROLES

Founding Engineer: https://www.notion.so/mitteai/Founding-Engineer-254f3cdf01fb...

Senior Frontend Engineer: https://www.notion.so/mitteai/Senior-Frontend-Engineer-258f3...

Senior Elixir Engineer: https://www.notion.so/mitteai/Senior-Elixir-Engineer-258f3cd...

Senior Full-Stack Engineer: https://www.notion.so/mitteai/Senior-Full-Stack-Engineer-258...

Findigs | Full-time | NYC | Hybrid 3x/week in office

At Findigs, we’re transforming the rental experience — making it fairer, stress-free, and more convenient by changing the fundamentals of renting.

We build high-scale applications that streamline renting for millions. Our modern tech stack includes TypeScript, Python, Node.js, React, and scalable cloud infrastructure. We foster a collaborative culture where engineers have high ownership and autonomy, taking features from concept to deployment.

Join our sharp, supportive, and mission-driven team in our newly renovated SoHo/NoHo office.

Open role:

Senior Software Engineer ($180k - $210k) —> Apply here (https://jobs.lever.co/findigs/3b39616d-223f-4326-a500-f804c3...)

N43 Studio is a venture studio dedicated to building bold, technology-driven companies from the ground up. We identify emerging opportunities, develop ideas into working prototypes, and launch ventures designed to scale.

We’re hiring a full-time, Senior Full Stack Engineer to join our first product pod and help bring our first venture to life. You’ll work alongside a product manager, front-end engineer, and back-end engineer, supported by a Principal Architect and the studio leadership team. You’ll have autonomy, clear ownership, and the chance to shape both the product and our technical foundations from day one. This is a hybrid role, 3 days a week based out of our Toronto office.

What We’re Looking For

- 5+ years of experience building full-stack web applications, ideally in startup or venture environments. - Strong proficiency in Python, particularly with modern frameworks like FastAPI or Flask. Experience in other backend languages (e.g., Node.js, Go) is a bonus, but Python is our primary stack. - Proficiency with modern frontend frameworks such as React and TypeScript. - Familiarity with cloud infrastructure (GCP preferred) and DevOps best practices. - Comfort working in high-ambiguity, high-velocity environments with a lean, collaborative team. - A builder mindset—you’re as comfortable iterating in code as you are thinking about product.

Apply here: https://ats.rippling.com/north-43-west-79-studio-inc/jobs/e4...

Prove AI| AI Management start up| Fully Remote | Full time (B2b or employed if in US, UK or Switzerland)| Seeking Full Stack and Senior Full Stack Developers

Prove AI is an AI management platform that helps organizations centralize and manage their AI models while maintaining strict oversight of data access and usage. Built on distributed ledger technology, Prove AI provides tamper-proof oversight, ensuring organizations can set and enforce guardrails to mitigate risk and optimize AI performance.

This is a hands-on engineering role for someone excited about crafting production-grade software, solving complex problems, and contributing to a high-performing product and engineering team. As a Full Stack Developer you will work across the stack—primarily using TypeScript, React, and Node.js—with opportunities to contribute to both backend systems and frontend interfaces. While the role values frontend capability, strong backend engineering experience is essential to support our API layer, data processing, and system integrations.

To apply please apply directly via this link https://proveai.careers.hibob.com/jobs/1a652b22-bdf9-438a-a9... (please ignore location as we are fully remote and will accept applications from any location or contact Richard Morrow - richard@proveai.com

JustWatch | Frontend Engineer (Junior–Mid) | Berlin | Full-time | HYBRID (2–3 days office, rest remote)

At JustWatch, we’re focus on being the best at marketing in the global entertainment industry. Our Martech team develops internal tools that help us achieve that goal, creating automations to help our own campaign managers inside the company.

You’ll work on our Business Dashboard (Next.js), leading projects end-to-end while collaborating with designers, stakeholders, and other dev teams. We’re looking for a frontend engineer who enjoys solving problems, thrives on collaboration and focus on bringing value to its users. In return, we offer a culture of trust and ownership, where you can make decisions without bureaucracy and really focus on the value you are delivering. Based in Berlin, we have an awesome office that you don’t need to go, but you will want to.

Our tech stack: Next, Typescript, Tailwind

https://www.justwatch.com/talent/jobs/tech/junior-mid-level-...

Undetect.io | Counter-Security / Reverse Engineer | Full Time / Part Time | Remote, Global

We're looking for a TypeScript engineer to join our team with a tight focus on stealth browser automation tools and RE / adversary intelligence pipelines.

You should have:

• Strong TypeScript, Node.js, CDP (Chrome Devtools Protocol) experience.

• Interest in C++ and Chromium internals.

• Experience evading or analyzing anti-bot and WAF systems.

• Practical experience reverse engineering & deobfuscation of heavily obfuscated / defended JavaScript.

• Intermediate / advanced understanding of browser fingerprinting and distributed proxy systems (or eagerness to learn).

• Able to provide examples of clean, maintainable code.

• Familiarity with Docker, Cloudflare Workers, and basic devops.

We're a lean, fast-moving team working on hard problems with real-world impact for enterprise clients, including many Y-Combinator success stories.

Email us: careers@undetect.io

CredCore | Engineering | Full-time | US(East preferred)/India | www.credcore.com

CredCore helps companies analyze Credit Agreements using AI. We are looking to hire an Engineering Lead with 10+ years of experience. You should be familiar with design patterns and software architecture, infra/kubernetes, and TypeScript/Python. If you’re interested, please reach out to us at careers@credcore.com.

A cover letter is not necessary. But please share your resume and links to your GitHub/GitLab/StackOverflow/other profile, or blog/papers, or other portfolio we can review before setting up the interviews.

ELI Beamlines (ELI ERIC) | Dolní Břežany (Prague), Czech Republic | Onsite (with HO) | Full‑time

We operate one of the world’s leading high‑power laser research facilities (up to 10 PW) and support an international user community. We’re hiring:

• Director for Technology Lead the Technology Division (laser beam transport, instrumentation, engineering services, control systems, data infrastructure). Set the technical roadmap, grow teams, and ensure reliability and integration across the facility. Apply: https://www.eli-beams.eu/careers/director-for-technology/

• SW Control Systems Developer Join the Controls Hardware Integration team. Build and maintain device control & data‑acquisition for lasers/beamlines (EPICS). Write IOCs/services in C/C++/Python, integrate hardware, and collaborate with scientists on Linux. Apply: https://www.eli-beams.eu/careers/sw-control-systems-develope...

• Web Developer for Data Visualization Build interactive tools and UIs that help researchers visualize experiment data and plan setups (from dashboards to 3D/WebGL). Work across Python backends & modern JS frontends; design clean APIs; familiarity with Jupyter/three.js/D3 a plus. Apply: https://www.eli-beams.eu/careers/web-developer-for-data-visu...

• Safety Systems Engineer (PLC / Interlocks) Own the PLC‑based Personal Safety Interlock (PSI): define state logic, supervise installation/upgrades with suppliers, commission new areas, and keep documentation, testing and availability tight. Apply: https://www.eli-beams.eu/careers/safety-systems-engineer-152...

How we hire: CV → HR pre‑screen → interviews (in‑person or Webex). Questions? Email HR: jana.zeniskova@eli-beams.eu Or me with technical ones vojtech.gaman@eli-beams.eu

About us: ~350 people from 38+ countries; easy public‑transport commute from Prague. Keywords: EPICS, Python, Linux, PLC/Safety, JavaScript/TypeScript, Git.

ShieldAI | Web & Infrastructure Engineer | Full-time | Remote (US) or San Diego, CA with occasional travel

ShieldAI's Hivemind Special Project is hiring a Staff to Principal-level Infrastructure & Web Applications Engineer. We're a small team entirely comprised of L5-L8 ICs, working to bring seamless robotic behavior and coordination development from a sci-fi concept into reality. Our team work on a collection of long-term initiatives, demos, spike/proof of concepts, and assists to support Hivemind Product and Hivemind Solutions. LLM/AI applications for development acceleration represent a significant portion of our focus.

For this role, we are looking for someone deeply versed into Web Application and Infrastructure development. In particular TypeScript, bundlers, isomorphic development strategies, Web semantics, CSS/modules, browser performance optimization, protocols etc. If you have built custom webpack loaders, an SSR framework of FRP renderer from scratch, done packet level processing, or frame-rate optimizations in React, and have strong opinions about functional development and infrastructure please reach out!

Full Job posting: https://jobs.lever.co/shieldai/55c5676a-8b67-4379-84a8-58f59... If you are interested please contact me at [sp_hiring_sep2025 AT shield.ai] or apply directly on the job posting.

Composio | Senior Backend Engineers + Product Engineers (Frontend + SDKs) | Full-Time | In Office (SF and Bengaluru, India)

Hi HN, we’re building https://composio.dev — the fastest way for AI agents and developers to take action across apps like GitHub, Gmail, Slack, and more. Our SDKs (TypeScript + Python) and APIs let developers connect and execute tools in just a few lines of code.

We’re a small, fast-moving team obsessed with developer experience. Our stack is TypeScript-heavy: backend in TS/Go/Python, frontend in React/Next.js, SDKs in TS/Python. You’ll work across product and engineering to define APIs, craft abstractions, and ship features used by thousands of developers.

We’re early stage, small team and looking for engineers who want ownership and impact.

Feel free to reach out to me with your resume and links of your work: musthaq@composio.dev

Ploid AI | Barcelona, Spain | HYBRID (preferably on-site) | Founding Engineers | Full-time + Equity

We’re building an AI-first bioinformatics platform to empower plant breeders and life science researchers with agentic AI and LLMs. Backed by pre-seed funding and real demand from biotech and seed companies, we’re looking for versatile founding engineers to help us shape the future of AI in genomics.

What you’ll do:

• Architect and build AI workflows, agentic interfaces, and data pipelines

• Work across the stack: Go, Python, TypeScript

• Contribute to system design, infrastructure (AWS, Docker, Terraform), and devops

• Collaborate closely with scientists and iterate from prototype to product

• Help define our technical culture and roadmap as a core founding member

Nice-to-haves (not all required): LLM integration, RAG systems, gRPC, scientific computing, cloud/on-prem hybrid systems

About us: We’re an early team of engineers and scientists with strong academic and industry backgrounds (ex-BCG, PhD in Plant Biotech, M.Sc. AI). We’re committed to building something impactful, technical, and genuinely useful for life science.

Apply: hello@ploid.ai

More about us: https://ploid.ai

We also consider internship requests from strong student candidates.

Update from last post on August: Thank a lot for all the interest from HN! we covered 2 out of the 3 open positions. We now look for expertise in full-stack development.

Retirable | https://retirable.com | Senior Engineer | NYC, hybrid onsite (Flatiron)

Looking for a product-driven engineer with Rails/React experience to help us bring retirement planning to everyday Americans. We just raised a series A and are building our team for the next phase of growth. Our stack is React/Typescript/GraphQL and Rails built with event sourcing, DDD and CQRS.

https://wellfound.com/jobs/3322815-senior-software-engineer-...

zoetro.pe | Technical Staff | San Francisco, CA | ONSITE/REMOTE | Full-time

We're an applied lab building deterministic and deep generative experiences. Our team has built AI models, games, and infrastucture at Tesla Autopilot, Epic Games, Scale.ai, Repl.it, Bun, and Lucasarts.

You will be building procedural simulation models and the supporting infrastructure and applications. We're a small team, so this means everything from CUDA kernels and Pytorch notebooks to web-apps. Our stack is multi-lingual and spans from very low to very high level code. We use both our own models and external providers.

Our team is hybrid-remote, being primarily based in San Francisco.

Our stack: Python (Pytorch/jax), Typescript(React etc), Rust/C++, Ghidra

We're looking for exceptional research engineers who aren't afraid to get their hands dirty. Experience with computational geometry or compilers/language design/formal methods is a plus.

Formal qualifications are less important than passion and skill. We're building our dreams, we hope you will feel the same.

If interested, email me at: simon+hn@zoetro.pe