BuildBetter | Senior Engineer (Backend, Full-stack) | Full-Time | Remote (US) | 170-200k base + equity | Visa Sponsorship not provided

BuildBetter is the product operations platform for customer-led teams. We've built an AI-first product that lets our customers, like Rappi, n8n, and Posthog, automate the operations work that lets them provide their customers with world-class product experiences.

We're looking for two senior engineers to join the team; our headcount has remained small while growing revenue, and we're now bottlenecked by development speed in a way that will make you invaluable. You'll have real ownership over your code from product ideation to customer support, and we'll be making substantive product updates weekly. We're looking for team players who are as fun to work with as they are productive, and are willing to compensate these two rolls commensurately - our aim is to be in the 95th percentile of equity compensation, and we expect that in exchange we'll have value-aligned employees who will help us grow the business.

Joining us will mean solving hard problems at the frontier of AI adoption, including:

- maintaining performance at scale

- building and maintaining rich frontend user experiences that maintain the standards of usability and delight that our customers know us for.

- building agent and workflow systems that automate real work for customers

- playing around with the latest models to figure out new experiences that we can offer our customers as cutting-edge models get released monthly

- building automation that's grounded in supporting product teams rather than automating them - our bet is that this is the likelier outcome out of the current generation of AI systems

Stack: Postgres / TS (Nest + React) / Hasura / EKS / S3 / LLM APIs / Python

Benefits:

- unlimited PTO

- $100/mo education stipend

- flexible hours: we measure productivity in terms of outcomes, not time, so as long as you're able to stay aligned, productive, and in regular communication, we don't really care what hours you work

- health insurance

Please reach out to: nikhil (at) buildbetter (dot) app

Arcol | Senior Software Engineer | NYC, SF, or Remote (US/Canada) | Full-time

Arcol (arcol.io) is a small, high talent density team building the future of building design - a future that's collaborative, fast, and intuitive. We're a web-native, fully collaborative 3d design tool modernizing the experience of architectural design for teams of all sizes.

We're looking for senior engineers with experience in modern web technologies - some of our key technical building blocks are Typescript, Rust, wasm, WebGL - and a strong ownership mindset. Experience with computational geometry, computer graphics, or similar a strong plus. This role sits at the intersection of solving deep technical foundational challenges with shipping a product that solves real problems for real people.

Reach out to me directly at thomas@arcol.io or peruse our careers page (https://www.arcol.io/careers) - we'd love to hear from you!

Greptile | Software Engineer (junior, senior, staff)| San Francisco ONSITE | https://greptile.com

Greptile is building AI agents that catch bugs in pull requests. Over 2,000 teams including Brex, Whoop, and Substack use Greptile to review nearly 1B lines of code every month.

We're a team of ~20 in San Francisco, working on things like better agent evals and sandbox execution environments.

We've raised $30M to date, including our recent Series A led by Benchmark.

Stack: Typescript

Open roles: greptile.com/careers

Salary ranges: $140k-270k base (depending on seniority) + $40-100k/yr equity

Onton.com | Fullstack & Research Engineers | San Francisco, CA | Hybrid

Join us in pioneering the future of e-commerce search. 1M+ MAU growing rapidly. Large seed round raised from top-tier VCs and individuals with backgrounds from Google, Amazon, OpenAI, Stitch Fix, Whatnot, Stripe, and more.

We're a hard-working team of 10. We have an office in Jackson Square with a great view that we're looking to fill with other high-performance people!

Tech-wise, it's React/Typescript + Julia, if that's interesting (no worries if you haven't used it). We've also built our own graph and vector DB to cope with the scale, and the foundations of a neuro-symbolic AI agent that learns more about the world on every search!

Job posting and more information here → https://onton.com/careers

We read and respond to every application.

Stellar (https://stellarcs.ai) | Founding Software Engineers | Amsterdam, the Netherlands | Full-time | No Visa Sponsorship

Stellar is building the go-to AI voice agent platform for customer support, enabling incredibly human-like customer service over the phone. We're a young and rapidly growing startup that has already proven traction, with a number of well-known companies among our initial customers.

To see some of our AI voice agents in action, see https://www.stellarcs.ai/demo-showcase

We're looking for founding software engineers to help us scale Stellar's platform globally. As one of the first members of our engineering team, you’ll play a key role in Stellar's journey and have the opportunity to help shape our architecture, engineering culture and product and engineering roadmap.

Tech stack: Go, Node.js, Typescript, React, Next.js, Encore Cloud, GCP

What you’ll do:

- Build performant APIs and backend services in Go and Typescript (Node.js)

- Develop Stellar's frontend in React, TypeScript and NextJS, to allow companies to effectively design, test, deploy and monitor their AI voice agents

- Design a scalable, fault-tolerant system architecture that can handle large volumes of concurrent real-time audio conversations & agent interactions while maintaining low latency

- Work on Stellar's AI agent framework, at the intersection of software engineering and AI engineering

- Design and implement a platform that meets enterprise standards in terms of security, compliance, resilience and data privacy

- Build API integrations with external systems to enhance the capabilities of Stellar's agents

- Help shape the early engineering culture as one of the first hires of a young and growing tech startup

Why join: you'll be joining at a pivotal time in our growth, in a role with a high degree of ownership and strong growth potential. Join a small but talented team, coming from high growth startups and scale-ups such Framer, MessageBird and Adyen.

More details about the role here: https://www.stellarcs.ai/careers/software-engineer

Apply: Send us an email at info@stellarcs.ai, and mention you came from HN. Note that we do not provide visa sponsorship, and will only proceed with candidates who are able to work from our office in Amsterdam (~4 days in-office per week)

Vestwell | Senior Software Engineer | HYBRID - NYC; Austin; King of Prussia, PA | https://www.vestwell.com/careers/7510610003 | $145K - $160K base + bonus & equity

I'm the hiring manager for this role. Please see the job description for details, but I'm looking for someone who is, or is able to become, proficient in backend development for a public nest.js API suite using TypeScript. We don't have any hard requirements like a CS degree or prior nest.js experience, but candidates do have to complete a TypeScript coding challenge. It's a real-world problem, no leetcode. In total, our interview process is only 3 rounds, and we move pretty quickly. We also want someone who has systems design experience and good technical leadership skills. You also have to be self-motivated. We use a pull rather than push process, so work isn't assigned to people, and you have to be good at working efficiently without many hard deadlines or micromanagement.

Happy to answer any questions here! If you'd like to apply, please email shane.vierra [at] vestwell [dot] com with your resume.

Found | San Francisco, NYC, REMOTE [CAN/US] | Engineering, Data Science, Risk Operations, Compliance | found.com

We're building the next generation of financial tooling to help small business owners succeed. Our solution blends banking, bookkeeping, taxes and payments into an all-in-one solution to help save our users time, stress and money -- so they can focus on what matters to them; running their business.

https://found.com/careers , or you can reach me directly via jarred@

SWE Tech stack: Ruby on Rails (Kubernetes, GKE), React/Typescript, Capacitor, MySQL, Spanner

OmniAI (YC W24) | https://getomni.ai | Full Stack Engineers | SF In-Person | Full Time | $125k–$175k • 0.50%–1.50%

Tech stack: TypeScript | Node | React/Next.js | Postgres | Docker | K8s | LLMs

We’re building the AI-powered infrastructure layer for small-business lending. Banks and fintechs use Omni to automate document collection, financial modeling, public-record research, and ongoing borrower communication.

You’ll work on:

1. Wrangling messy PDFs into usable data (we built a major open-source extraction library: https://github.com/getomni-ai/zerox)

2. Aggregating millions of datapoints from 50+ public sources (UCCs, liens, licenses, tax records) + credit/KYC/AML data

3. Building real-time financial models that combine OCR, LLMs, and rule-based systems into predictable outputs

We’re early, you’ll have a huge impact. Email me (my name at the URL) or apply here: https://www.ycombinator.com/companies/omniai/jobs/Dr0GIaE-fu...

Document Crunch | REMOTE(US) / HYBRID

Company description: We do construction compliance AI. We're in series B, about $40m raised. Growing a lot! Feel free to reply or DM me if you want some more info.

Tech Stack: Typescript full stack except for Python for ML, NestJS backend, NextJS frontend, React Native mobile, IaC in Pulumi using TS.

Open Jobs:

- Senior/Staff/Principal Frontend Engineer (fullstack Typescript nice to have)

- Senior/Staff/Principal Node Engineer (fullstack Typescript nice to have)

- Senior/Staff/Principal QA Engineer

Location: Austin or Texas preferred, but open to remote for the right candidate in the US.

Jobs page: https://www.documentcrunch.com/careers#open-roles

For the roles not listed yet, email us directly at PeopleTeam@documentcrunch.com

GreenTriangle | Senior Software Engineer (Product/Frontend) | Remote (EU only) | https://green-triangle.com

We're making crop insurance accessible to farmers worldwide. Our platform helps major insurers monitor 10M+ hectares across 10+ countries using satellite imagery and ML — so farmers can manage the volatility of their industry.

You'll build web & mobile apps that agronomists use daily in the field (offline-capable, rough conditions), work on data-heavy features cramming gigabytes into mobile apps, and help shape product decisions with real autonomy.

Stack: TypeScript, React/React Native, PostgreSQL/PostGIS, Python + GDAL/NumPy for satellite imagery processing.

Small remote-first team, wear multiple hats. Quarterly in-person meetups.

chris@green-triangle.com

Saildrone | Multiple Roles | Onsite/Hybrid (US Only) | SF Bay Area (Alameda) | Full-Time | https://www.saildrone.com/

Saildrone is the world's leading collector of ocean-related in situ data via uncrewed vehicle, above and below the sea surface. We work with navies across the world to deliver insights about waterways, contribute to safety of life at sea, and mitigate illegal fishing and trafficking. Additionally, we work with governments, civic agencies, foundations, universities, and private companies around the globe to derive better information about our oceans and seas - be it sailing drones into the eye of hurricanes to obtain new scientific storm data, mapping out the ocean floor, collecting new CO2 data in hard-to-reach areas, or counting biomass to establish fishing quotas.

Maybe you saw that we've repeatedly hucked drones into category 4 hurricanes[1]. Or maybe that we completed a transoceanic cable survey for Meta[2]. And maybe you saw that we just announced a large partnership with Lockheed Martin[3]. Or maybe you didn't see any of that, but you're still intrigued by the idea of autonomous, long endurance sailboats that help us better understand and secure our planet.

Whatever the case, we're hiring for a breadth of different positions across our organization. In software, we're hiring for folks in our Perception, Platform, Frontend, and Vehicle teams. Stacks vary from team to team, but we're looking primarily for folks with backgrounds in C++, Python, and/or JavaScript (Node, TypeScript, React). All software positions are hybrid roles based out of Alameda, just a quick ferry ride across the Bay from San Francisco.

In addition to software engineers, we're also hiring for a bunch of other positions across the company in production/manufacturing, technical operations, and more.

You can see a list of open positions on our career page: https://www.saildrone.com/careers

Please apply through our career page; be sure to select "Other" and specify this HN post when asked how you heard about us!

[1]: https://news.ycombinator.com/item?id=28715110

[2]: https://www.saildrone.com/news/revolutionizing-deep-water-ca...

[3]: https://www.saildrone.com/media-room/press-releases/lockheed...

Bevyl | Founding Engineer / AI Engineer | NYC/open to remote | https://bevyl.ai/

Bevyl is a pre-seed startup (team of 2) building AI-powered content creation tools for consumer brands. We're making it possible for brands to produce high-quality social media content at scale without agencies or massive creative teams.

You'll work with me (CTO, ex-Airbnb/Loom/Hightouch) to build key parts of our video + AI tooling. Video is hard, and we need to move fast to win. We have real customers, a lot to build, and strong conviction in our space. This is genuinely a very fun project and I'm looking to build my core team.

Stack: TypeScript, React + Tanstack, PostgreSQL, Supabase, AI pipelines. Competitive salary and significant early-stage equity

You: Startup experience, willingness to hustle, love for product, comfort with ambiguity & startup pace

noah@bevyl.ai

SpruceID (YC W21) | REMOTE (US-Based Preferred) | Full-Time | spruceid.com

Spruce lets users control their data across the web. Instead of users logging into platforms, we believe platforms should request to access data vaults controlled by users.

The demand for trusted digital ID is accelerating as AI deepfakes begin to destroy most of the ways we use to verify identity today. How private or secure is it to hold your driver's license or passport up to a webcam to get a bank account? Was it ever private or secure? Stable diffusion can break so much of this already. Society will need trusted digital IDs and credentials. Our mission is to allow them to be controlled by individuals, with safeguards to prevent descents into surveillance states and checkpoint societies.

We are the main implementers of category-defining initiatives such as the digital ID program for the California DMV, and the verifiable digital credentials program in Utah. We are private sector participants in NIST's National Cyber Security of Excellence initiative for privacy-preserving digital ID.

We are hiring skilled engineers who care about making a real impact in improving public services, digital autonomy, and user privacy for the world. We work closely with public sector agencies, and have high regard for public servants. We have a strong engineering and customer-oriented culture, and are not simply a SaaS product or AI wrapper. Our roles are not for the faint of heart: you will be expected to work hard and learn a lot in this role.

Our engineers are ambitious to get outcomes for our customers and their constituents. On any given day, they may write great Rust/C#/TypeScript, deal with mainframe dumps, read policy documents, respond to technical RFIs/RFPs, manage on-prem environments, implement new NFC + Bluetooth protocols in Swift/Kotlin, create CI/CD processes that enforce W3C accessibility guidelines and i18n requirements, rewrite lost specs from disassembled binaries, figure out stablecoin payments, and design new protections for public key infrastructure. It is a team effort, and people with T-shirt shaped skills are able to collaborate and learn a ton from each other every day.

We are interested in candidates who want to be proud of the meaningful impact they make for society, even if it takes time to get right. This is not the right job for someone who wants to "join a cool new AI startup" that implodes or exits in under a year.

See our roles here: https://jobs.lever.co/sprucesystems/

Evervault | https://evervault.com | New York, London, Dublin, Remote | Full Time | Hybrid (3 days in office)

Evervault's mission is to make world-class data security effortless and pervasive. We use applied cryptography to secure the most sensitive data, in the most sensitive areas like payments, banking and healthcare. We build products to protect customer data with the latest advances in encryption and confidential computing, so our customers can minimize the headache of compliance and data security.

We are a small team (10 engineering, 25 overall) hiring across engineering, sales, marketing and finance for people who are passionate about building out our roadmap of products to protect companies from data breaches in a world where data has become gold.

Open roles:

- Senior Software Engineer (Payments) - Product Engineer - Design Engineer - Account Executive - Partnerships Manager - Head of Finance & Ops

Out stack is: Rust, Node.js (TypeScript), AWS

Apply here: https://evervault.com/jobs or ask me a question shane@

Metly | Founding Engineer / AI Engineer | Remote (UTC ±2) | https://www.meetmetly.com/

Metly is a pre-seed startup (team of 5) building strategic intelligence for pharmaceutical companies. We're aiming to replace consultants. Pharma companies hold critical knowledge across disconnected systems—regulatory filings, clinical pipelines, competitive intelligence—none of it linked to real market activity. We're building the layer that connects it all and makes it actionable.

You'll be working on the hard parts of getting LLMs to construct knowledge graphs users can actually trust: entity extraction from dense regulatory documents, grounding outputs with verifiable citations, and turning unstructured data into clear recommendations.

Stack: TypeScript/Python, React on TanStack, PostgreSQL, Kubernetes on GCP. We have traction and are moving fast in 2026. Competitive salary and meaningful early-stage equity.

graeme(at)meetmetly.com

Veda GmbH | Fullstack-Developer Java/React | Remote (Germany only) | https://www.veda.net/

What is Veda:

The VEDA Group develops advanced HR software and services that help companies make their working environments fit for the future. Through continuous development, we optimize processes, increase efficiency, and focus on the needs of our customers. For more than 40 years, we have been driving digital transformation and expanding our portfolio with innovative solutions. More than 1,200 customers rely on our products every day—supported by a dedicated team that creates sustainable change with passion and an innovative spirit.

What I'm looking for:

For my team I'm looking for two full stack developers Java/React. In this case it is required that you have very good German skills (C1 or above).

Tech stack: Java (Sprint Boot), Hibernate, SQL, Maven, React and TypeScript

For more information have a look at: https://jobs.veda.net/de/jobs/7/senior-fullstack-developer-j...

Starbridge | Senior Engineers (Kotlin/Java/React/Typescript) | NYC or Remote | Full-time | starbridge.ai

Starbridge is building an AI platform that turns large-scale public and enterprise data into reliable sales insights. We are early, moving fast, and building from zero to one, so this role will have huge ownership and product impact.

Backend Engineer: (looking for Kotlin/Java/Scala experience). You'll work across the backend: building enterprise integrations, large-scale scraping and parsing pipelines, and systems that let users apply LLMs to millions of documents to generate insights at scale.

Product Engineer: (React/Typescript) who would work closely with product and design to build user-facing parts of the platform. You will craft performant, stable frontends that explain technical concepts to non-technical users and help us iterate fast based on customer feedback.

AI Engineer: Applied AI plus strong software engineering. You will build, evaluate, and deploy LLM-driven features like deep document analysis and interactive chat, working with models from OpenAI, Anthropic, and Gemini. Expect hands-on Python, ML system design, experimentation, and production reliability. Bonus for RAG depth and frameworks like LangChain, LlamaIndex, or Hugging Face.

We're looking to build our in-person team in NYC but also open to remote!

Apply: https://starbridge.ai/careers and mention HackerNews or email melissa@starbridge.ai with your resume.

RepSpark | Engineering & Product | REMOTE (US) | Full-Time | https://www.repspark.com

RepSpark is the top SaaS B2B wholesale e-commerce platform for brands in apparel, footwear, and accessories. For example, we're how golf courses across North America and Europe purchase brands like Titleist, Peter Millar, Kjus, etc.

Stack: C#/.NET (Rider on macOS), GraphQL, React, TypeScript, PostgreSQL, AWS (CDK), GitHub Actions.

We're actively hiring:

* Senior Product Engineer (Full-Stack): Own outcomes across React/TS + C#/.NET + Postgres; help modernize legacy .NET Framework to .NET 8; build/scale ERP ETL & integrations. https://www.repspark.com/senior-product-engineer-full-stack

* Product Manager - Integrations: Own the integrations roadmap; prioritize ERP connectors (NetSuite, SAP, etc.); partner closely with engineering. https://www.repspark.com/product-manager

Email careers@repspark.com with your resume/links (GitHub, portfolio).

Trunk | https://trunk.io

Marketing Lead (Developers) - Remote friendly | Forward Deployed Engineer- Software Engineer II | DevRel Engineer - San Francisco| Staff Full Stack Engineer - San Francisco | Sr Full Stack Engineer - San Francisco

Trunk is an a16z funded (25M) Series A dev tools startup, redefining software development at scale. At Trunk, our mission is to help teams create high-quality software quickly. AI has made writing code 10x faster, but shipping is still painfully slow. The bottleneck has shifted downstream - to merge conflicts, flaky tests, inconsistent code quality, and dozens of other frictions that drain productivity and morale. Engineering teams that can stay focused on designing, implementing, and delivering software will build magical, high-quality projects - and they'll be happier doing it. We're building a CI Reliability Platform that empowers teams to land code faster and develop happier!

Our products:

  * Merge Queue: Ensure your PRs keep the builds you care about green at any scale.

  *Flaky Tests: Detect and eliminate Flaky Tests.

Frontend: Typescript, React, Next.js, AWS Backend: Typescript, Node, AWS Data pipelines: Dagster, Python, polars CI/CD: GitHub Actions

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

Radar Labs | Software Engineers (SRE, data platform, backend, full-stack, mobile) | Remote (US), NYC | Full Time | https://radar.com

- Radar is the geo-location dev tool

- Doing 1B+ API calls per day

- Our main languages are Rust and TypeScript, we also use mobile and offline pipeline languages (Python, Scala, and Terraform).

- We're based in NYC with our HQ in Union Square and remote friendly (US)

Interesting things we're working on:

- HorizonDB, our Geospatial database written in Rust

- Precise indoor location more accurate than iOS and Android leveraging Ultra-Wideband, other mobile sensors and ML.

- Extracting raw map data from satellite maps and the web leveraging ML and AI

- Anomaly detection to identify spoofed locations

- Mobile infrastructure that automatically configures itself optimizing battery-life and location accuracy for different use-cases over time

- Multi-Region AWS K8s deployment, 99.99%+ availability

- Frontend tools to visualize and debug location data at scale

Check out our jobs page here: https://radar.com/jobs#jobs If you have any questions, feel free to reply here or you can e-mail me at tim@radar.com