Brave Software | C++ Engineer, Filterlist Engineer | REMOTE | Full-time

Brave is building a privacy-first browser and a more transparent Web for over 100M users.

On the privacy team, we are looking for:

- C++ Engineer: Working on privacy features in our Chromium-based core engine. Link: https://job-boards.greenhouse.io/brave/jobs/7339167

- Filterlist Engineer: Working on adblocking and JavaScript fixes for websites. Link: https://job-boards.greenhouse.io/brave/jobs/7434948

We are a remote-friendly company with a very-low-meeting culture.

Contact: shivan at brave dot com

Gauge | Founding Engineer | ONSITE | Full-time

Gauge helps companies show up in more AI answers. Search traffic is shifting away from Google into AI chat, and companies are figuring out how to adapt right now. Our system delivers real-time analytics derived from millions of LLM answers, while providing an intuitive, powerful UX. We also generate optimized articles to improve our customers’ visibility, and offer an agentic chat interface over their data (think ‘Why was there a spike on 12/10?’ or ‘Which of my pages should I refresh?’).

I'm Evan, the CTO, and we're looking for engineers with strong programming fundamentals, creative problem solving skills, and a high-agency working style. You might be a good fit if you are an ex-founder, ex-founding engineer, or have worked at a Seed/Series A startup.

We primarily use Django, React, Postgres, Celery, and Clickhouse.

Contact me with your resume (and mention HN) if you're interested: evan[at]withgauge.com More details/JD also here: https://www.ycombinator.com/companies/gauge/jobs/qemTjv7-fou...

EQTY Lab | Software Engineers & DevRel | San Fransisco | Full-time

EQTY Lab is focused on emerging governance and security paradigms for AI infrastructure. Our primary focus is verifiable computing using cryptographic capabilities to identify and govern agent behavior.

We're also focused on helping the industry advance with frontier tooling. From requesting the hooks feature in Claude Code, to building our own open-source integrated capabilities such as https://github.com/eqtylab/cupcake - we will continue to explore and share the things we develop for coding agents or any frontier tooling enterprise is quickly adopting.

We're seeking software engineers across the full stack. To include,

    - engineers interested in governance tooling
    - sdk writing in TypeScript or Rust
    - or engineers with cryptographic security domain experience
    - or deeper hardware level focus (platforming on Kubernetes - confidential computing, custom firmware as it relates to GPUs).

Please email me directly: ramos@eqtylab.io

RunReveal (https://runreveal.com) | Systems Software Engineer | Austin, SF (US Work Auth required) | Full-time

RunReveal is the Security Data Platform that's building tools to help companies detect and respond to threats in their network. We're a team that values speed, quality and curiosity. Our stack is Go, NextJS (TS), Postgres and ClickHouse. We believe that companies should be able to own their security data and get value out of it too and so we've built a platform that can be deployed anywhere.

If you're into self hosting or running a homelab, or you're using LLMs to enhance your development workflow and extend your knowledge and not just regurgitate slop, or you're always looking for opportunities for self improvement, you're in good company at RunReveal.

We're especially interested in folks that have experience working with petabyte scale databases. We use ClickHouse, but similar other large scale data technologies like Iceberg, Flink, Spark, ScyllaDB, Cassandra, InfluxDB, TimescaleDB, BadgerDB etc would also be valuable.

Reach out to me via alan at the company domain and mention hn who's hiring January '26 in the subject line.

Common Prefix | Software Engineers / DevOps | Greece | Remote | Full-time

Common Prefix is a blockchain research & development company. Blockchain technologies enable large-scale economic coordination through shared, programmable ledgers. Our mission is to solve the foundational scientific and engineering challenges standing in the way of mainstream adoption, particularly around interoperability, scalability, and usability. We combine formal scientific research with production-grade engineering. Our team publishes in top-tier peer-reviewed venues and builds open-source infrastructure used across major blockchain ecosystems. We have contributed to advanced systems including Axelar, XRPL, Sui, and Flashbots, and are trusted partners to protocols building critical infrastructure.

What we're looking for:

Software engineers who can solve problems, are smart, get things done, and enjoy working on the bleeding edge, learning about cryptography, and working from first-principles.

Tech stack: Doesn't matter, we'll teach you. But we work mostly with Rust, Go, and TypeScript.

Open roles:

- Support Engineer (junior-mid): https://www.notion.so/commonprefix/Opening-Support-Engineer-...

- Software Engineer (mid): https://www.notion.so/commonprefix/Opening-Software-Engineer...

- Senior Software Engineer: https://www.notion.so/commonprefix/Opening-Senior-Software-E...

- DevOps: https://www.notion.so/commonprefix/Opening-DevOps-Engineer-2...

We offer:

- $50,000–$160,000 / year cash + stock grant + performance bonus (depends on level but not location)

- Local from Athens, Greece, or remote

- Conference participation in exciting scientific and engineering venues, 2-3 times per year

- The opportunity to work and learn from world-class scientists from major universities in the field of blockchains, cryptography, and consensus

Apply here:

https://commonprefix.notion.site/2b7bf672de828051b53cdd37811...

Blackbird | Dev Shop | Remote (US or Europe) | Contract

Blackbird builds web + mobile apps for startups and innovative companies. We work on interesting, greenfield projects, and rely on small, veteran teams who have lots of autonomy. Everyone is a remote contractor, and our work culture is low-drama and highly collaborative. No pointless meetings, no bureaucracy, no egos and lots of time spent building things.

We’re looking for senior full stack engineers / CTO consultants / data scientists. We value engineers who are strong technically as well as great communicators.

Our typical stack is TypeScript, React, Postgres, and AWS although it will vary project to project.

If you enjoy moving fast, working with great engineers, and building something from the ground up, you’ll fit right in.

If interested, reach out directly to me at vance [at] blackbird.us

Archer Aviation | San Jose, CA | iOS & Backend | Full-Time | https://archer.com

Archer is an aerospace company building an all-electric vertical takeoff and landing aircraft with a mission to advance the benefits of sustainable air mobility.

We're pushing the envelope in aviation software through applied AI. We have production aircraft, we have an operational airport, and we have a dream of a better future in the sky.

Join us if you want to build the next chapter in aviation.

Apply here and mention this post: https://job-boards.greenhouse.io/archer56?departments%5B%5D=...

Ezra | Senior+ Engineer (Full-Stack) | REMOTE (LATAM / US Eastern) | Full-time

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Ezra is a venture-backed startup building at the intersection of sustainable finance and artificial intelligence. We're building a platform to accelerate capital deployment into climate solutions and other world-positive investments.

I’m Rob, the CTO, and we’re looking for multiple seasoned, full-stack Senior+ Engineers (6-10+ years exp) to significantly contribute to the development and scaling of our core platform. We are specifically looking for teammates in Central and South America (LATAM) who can work US Eastern hours. This is a high-autonomy role for a proven generalist who is deeply product-focused and takes complete ownership of features from concept to production.

The Role:

Drive technical delivery of full-stack features end-to-end, collaborating with Product and Design to define requirements and ensure engineering quality.

Design and develop scalable components and APIs across our backend and frontend.

Work to integrate, serve, and iterate on model-powered features and RAG systems.

Contribute to system architecture decisions and the evolution of our infrastructure.

Stack: Python (FastAPI), Typescript, Next.js, React, AWS, Terraform, Postgres (SQLAlchemy).

Contact: Email me directly at robert+hn26@ezra.fi with your resume

Spill (https://www.spill.chat/) | Senior I Product Engineer (£84-101k) Senior II Backend Engineer (£108-121k) | London, UK (HQ) | ONSITE | Full-time

Our mission is to make talk therapy free at the point of use for as many people as possible. Right now, we're doing this by selling a mental health support product to businesses. We're a small product-focused company and were cashflow positive in 2025.

If you're interested in the mission and one of the roles, email calvin[at]spill[dot]chat with your CV

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/

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).

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 and optionally GitHub/portfolio.

CoPlane (https://coplane.com/) | Design Engineer | NYC or Remote (North America) | Full Time

The world doesn't need another ERP. CoPlane is building the Agentic Orchestration platform that enables enterprises to orchestrate intelligent processes across their existing systems. Founded by ex-Stripe/Segment product and tech leads, we're changing how businesses operate their backoffice - helping them scale intelligence not headcount.

We're looking for an exceptional design engineer to grow our small team of engineers that include ex-founders, open source contributors (authors of neovim and neverthrow), and architects of petabyte-scale data platforms. You'll work with billion-dollar enterprises solving their hardest, most mission-critical automation problems.

If you're excited about working at the nexus of data, automation and AI, and want to make a significant impact in an early, well-capitalized startup with large enterprise design partners, we'd love to hear from you.

Roles: Product/Design Engineer.

For more info and to apply: https://coplane.com/careers

Chroma | ONSITE - San Francisco | Full-time | https://trychroma.com

Chroma is the open-source search and retrieval database for AI applications. It supports dense vector, sparse vector, regex, and full-text search. We support local, single-node, and cloud hosting.

We're a team of 14, all engineers today. We work in Rust, Python, Typescript, and Go.

We're hiring for these areas:

- Product design

- Production engineering

- Platform engineering (Rust)

Apply here: https://jobs.ashbyhq.com/trychroma/9ed3aee8-07dd-44e3-9ca1-d...

More details at: https://careers.trychroma.com

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.

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.

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.

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 recruiting@starbridge.ai with your resume.

WalzOps | https://walzforgovernor.org/ | Frontend, Backend, DevOps Engineers | Remote (non-US applicants only)

WalzOps is building fully automated daycare business infrastructure, treating “opening and operating a daycare” as a repeatable software pipeline. We focus on leasing coordination, synthetic receptionist systems, electronic paperwork submission, compliance workflows, scheduling, and payments, with the goal of replacing manual, human-heavy operations with end-to-end automation.

We’re hiring frontend engineers to build complex form-driven dashboards and operational UIs, backend engineers to design workflow engines and APIs for licensing, compliance, and automation, and DevOps engineers to own deployment, infrastructure, and repeatable multi-tenant environments. Our stack is modern, cloud-native, and automation-first, and we value people who enjoy turning messy real-world processes into deterministic systems.

This is a full-time, remote role with an async-first team. Non-US applicants only. Apply by emailing hiring@walzforgovernor.org with a short note about a boring business you’d automate next.

Cloudflare Durable Objects | Multiple roles | REMOTE | https://www.cloudflare.com/developer-platform/products/durab...

Durable Objects is the Cloudflare Developer Platform's product for building stateful serverless applications.

We are hiring:

- Senior level systems engineers: https://job-boards.greenhouse.io/cloudflare/jobs/5390243

- Senior level product engineers: https://job-boards.greenhouse.io/cloudflare/jobs/7408167

- An engineering manager with systems engineering experience: https://job-boards.greenhouse.io/cloudflare/jobs/7493943

Lantern | https://withlantern.com | Software Engineers (Python, Full-Stack) | Full time in New York, NY (ONSITE) Lantern is building AI-powered revenue intelligence—think autonomous agents that turn cold outreach into warm conversations. Our platform automatically detects buying signals across your tech stack [1], prioritizes opportunities, and helps B2B sales teams focus on deals that actually close. We're an agentic-first startup building with Python, FastAPI, Next.js, and React, backed by a modern data stack (Postgres, ElasticSearch, ClickHouse, DuckDB). We deploy on Kubernetes/AWS and use Temporal.io for workflow orchestration. We're hiring software engineers who want to work on cutting-edge AI and agentic systems. You'll translate complex customer needs into scalable architecture, optimize AI model efficiency through prompt engineering, and ship features that directly impact how revenue teams operate. We value ownership, bold ideas, and people who want to push boundaries. This role is based in our Manhattan office (4 days/week in-person). We offer full health and dental coverage. Apply here: https://forms.gle/kEi5MDDiaJKdyN3fA I'm Maksym. If you're excited about agentic AI and reshaping B2B sales, shoot me a note at maksym <at> withlantern.com.

TeeMail/OpTee | Sales | USA Remote | Commission-based| teemail.io We're building automation tools for the golf industry. TeeMail handles inbound booking inquiries for golf courses automatically — parses emails, checks availability, sends responses. OpTee is a dashboard for tour operators managing tee time inventory across multiple courses. Live customers include premium resorts in Ireland and USA. Looking for someone to own US sales. The role:

Commission-based, uncapped Target: golf courses, resorts, tour operators, destination management companies Short sales cycles, clear ROI pitch (staff time savings, faster response = more bookings)

Good fit if you:

Have golf industry connections or hospitality/travel tech sales experience Can work independently and actually close deals Want equity upside in an early-stage company

Stack: Python, PostgreSQL, NLP for email parsing, integrations with booking systems Interested? Email info@teemail.io with a bit about your background and how you'd approach the US golf market.

Freetrade | London, Budapest (ONSITE) | Full-time | https://freetrade.io | £75k-£140k

Freetrade is a commission-free investing app used by over 1 million people in the UK. Our team is expanding, and we’re seeking software engineers to evolve and scale our core investing platform.

In this role, you will be instrumental in building and maintaining reliable and trustworthy systems for trade execution, clearing and settlement, asset servicing, and internal operational tools.

You will also play a key role in shaping our technical direction and mentoring other engineers as our team grows. Tech we use: TypeScript, Node.js, Postgres, and GCP

Note: We are three days in the office We don’t sponsor visas at the moment.

We are hiring across the board in engineering, data, people, marketing, risk & compliance and finance.

See all of our opportunities here: https://freetrade.io/careers

Ziva.sh | Expert Godot developer | Remote | Contract position

Ziva.sh makes developing games in Godot over 2x faster. We are an early stage company with developers in Canada, US and India, and are looking for Godot experts to use and enhance our product.

Compensation depends on developer ability, and we offer flexible hours and equity.

Email dan@ziva.sh with a brief overview of your Godot work to apply.