Mezzanine | Senior Java Developer and Architect | Stellenbosch, South Africa/hybrid/REMOTE possible | Full-time

Mezzanine designs and builds digital technology solutions for customers across Africa and beyond in order to create productive societies. Founded in 2012, Mezzanine has market-leading expertise in the agricultural, health, financial inclusion and education spaces and works with mobile network operators to bring about positive change in the lives of people through the benefits of the digital dividend. Mezzanine is a home-grown African company delivering value to the people of Africa and beyond.

Mezzanine is a subsidiary of the Vodacom Group.

Looking for a senior engineer with Java 25 skills, PostgreSQL, git and more. Let's talk!

consistent.emu.ajdw@hidingmail.com

Transfyr | Full Stack Software Engineer | Cambridge, MA | Full-time | ONSITE

Transfyr is building physical AI for science.

Why is it that a professional athlete has dramatically more information about every play they make than a scientist has about the cause of any experimental failure? At Transfyr, we are building the infrastructure to make real-world scientific work legible, transferable, and reproducible.

Modern science is capable of extraordinary outcomes, but much of the most important insights never become explicit: how experiments are actually executed, protocols drift, how experts make gametime decisions on the fly, why experiments fail on Tuesdays. This tacit knowledge is rarely captured, making it difficult to reliably reproduce results, much less hand off protocols to new team members or collaborators. We believe our systematic failure to capture tacit knowledge is holding back the entire industry.

We’re building systems that operate directly in real laboratory environments to elucidate, capture, and interpret this missing information. Our platform records and analyzes multimodal data about how scientific work is performed and turns it into durable, operational knowledge. In doing so, we are also building the world’s largest commercial dataset on real-world scientific execution.

This foundation is critical not only for driving elite human performance today, but for enabling meaningful automation tomorrow. Physical AI systems cannot learn from outcomes alone; they require rich, grounded records of how work is actually done in the real world.

Key domains of expertise we’re looking for (hiring from entry level to senior leadership):

- Computer Vision: take messy real-world images and video and make sense of them

- AI / ML Research & Engineering: build the best digital brains to support the best physical brains on the planet

- Full Stack Engineering: integrate our AI and data into tools that solve real customer problems.

A change from when I posted here previously: we are now focused on on-site in-person roles, at our lab/office in Cambridge, MA. And, we are particularly interested in DevOps/backend experience for the full stack role.

If you're interested, apply here! https://transfyr.ai/join-us

Deep Systems | Senior DevOps Engineer | Remote EMEA, APAC, and Americas | Full-time

I am building a DevOps team at a capital markets tech company most people haven't heard of — but some of the world's biggest financial institutions run on our platform. 300B+ messages/day. 99.99% uptime. Mostly on-prem, Linux, purpose-built hardware.

You'd be working on systems support, tooling, and helping build a custom observability platform in Python — because off-the-shelf monitoring doesn't cut it at this scale.

Capital markets / FIX experience is a plus, not a requirement. Appetite for learning is.

The vibe: small global team (US/APAC/EMEA), fully async, deeply technical. Leadership still codes. No hand-holding, no fluff.

Mainly focused on US and EMEA hires (we currently have people clustered in Belfast and North Macedonia); for APAC, we have solid leads. We don't have salary expectations to publish. We are open to different engagements given regional and your personal factors, including contract, W-2, contract-to-hire, etc.

Senior IC role, report to me directly.

https://jobs.gusto.com/postings/deep-systems-llc-senior-devo...

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!

FUTO | Software Engineers | Austin, TX | Remote or Onsite | Full Time

FUTO is an organization dedicated to developing, both through in-house engineering and investment, technologies that frustrate centralization and industry consolidation. Our work consists of a combination of in-house engineering projects, targeted investments, generous grants, and multi-media public education efforts. We are hiring for a few of our projects, Immich and Grayjay.

Immich is on a mission to provide a secure and private home for your most precious memories through our high-performance, self-hostable photo and video backup solution.

Grayjay is a privacy first media application that lets users follow creators, not platforms. The app aggregates content from multiple video sources including YouTube, Rumble, Twitch, PeerTube, Odysee, and more, into a single unified experience. Grayjay gives users full control over their viewing experience.

Roles currently available:

Mobile Developer - Immich : https://futo.tech/jobs/mobile-developer-immich

Android/iOS Mobile Engineer - Grayjay : https://futo.tech/jobs/mobile-engineer-grayjay

Plugin Engineer - Grayjay : https://futo.tech/jobs/plugin-engineer-grayjay

More details and job postings here: https://futo.tech/jobs

To apply, send your resume and cover letter to jobs at futo dot org.

Docker Inc, Remote (62 positions available) We are rapidly expanding to help developers securely use agentic AI to increase their productivity. We are hiring engineers, data scientist, program manager, product managers, solutions engineers, solutions architects, account executives

Details and apply: https://www.docker.com/career-openings/

Smarkets (https://www.smarkets.com) | Full Time | Hybrid - Onsite (London, UK)

Smarkets runs one of the world’s most sophisticated prediction markets, handling over £29 billion in volume since 2010 and engaging 200,000+ traders globally. We’re a technology company that happens to revolutionise betting - from sports to political markets, to delivering the sharpest prices and the fairest odds.

We are currently looking for:

Software Engineer - Backend, Python, Rust - https://smarkets.com/job/aaaf901f-77c0-4b35-9240-ed4cfa668ba...

Senior Software Engineer - Backend, Distributed Systems, Rust - https://smarkets.com/job/41fba25f-0896-46d5-a093-8ebbc9e1624...

Staff Engineer - https://smarkets.com/job/134306ca-60bb-478f-9b6c-4844009a908...

Engineering Team Lead/Manager - https://smarkets.com/job/59c8a1d1-25b6-4350-840c-9eb370d1433...

Dev Ops Engineer - https://smarkets.com/job/99823479-fd3a-4720-8090-455394fb63f...

Senior Cloud Infrastructure Engineer - https://smarkets.com/job/7ee3a731-acc0-448f-bc61-64429e2ebf9...

Senior Data Analyst - https://smarkets.com/job/71030981-7f44-4ed5-90b7-98c326b85fb...

Wayward (wayward.com) - we’re rebuilding the way brands and creators connect. Backed by a founder with $1B+ exits and growing fast, 3x YoY growth. Looking for NY-based engineers (hybrid) to help us build the platform and the team. Email me (CTO) jesse (at) wayward.com

Level 12 | Full Stack Web Developer - Python, JavaScript, SQL | Mid-Level & Senior | REMOTE | SALARY:$95K-145K+ | https://www.level12.io/careers/

Level 12 is a software consulting and custom development agency. We have mid and senior level positions. Our job descriptions are written by developers for developers. No HR fluff here, we want you to know what you are really getting into:

https://www.level12.io/careers/

- We have a commitment to transparency and offer a "no surprises experience" throughout the interview and hiring process. We value candor...as evidenced by the length of our job description. :)

- Our CEO prefers the title CED, Chief Executive Developer. Engineering and operational concerns don't take a back seat when potential sales come to the front door.

- You will be working remote with a team that is all working remote and has been for years. Let's make the best use of our time by not commuting.

- We practice and preach sound development practices. You are likely to learn and grow as a developer while working here.

- You are committed to automated testing of all the software you write (our apps typically have 92%+ test coverage).

- We have a no-drama office policy. We value and cultivate enjoyable working relationships among team members. No jerks allowed!

- We emphasize work/life balance and adopt policies that make sure our people don't get burnt out. For instance, our PTO/Vacation policies are designed so that you actually use them.

- If you apply, we guarantee that we will give you a response, whether "yay" or "nay". No black holes here!

- Hiring status & updates: see my most recent post to our hiring google group. Also, subscribe there if you'd like to be updated in the future: https://groups.google.com/g/level12-hiring

Sesame | Full-time | SF/NYC/Bellevue | On-site | https://www.sesame.com/

Sesame believes in a future where computers are lifelike - with the ability to see, hear, and collaborate with us in ways that feel natural and human. With this vision, we're designing a new kind of computer, focused on making voice personal agents part of our daily lives. More details from Sequoia: https://www.sequoiacap.com/article/partnering-with-sesame-a-...

Our team brings together founders from Oculus and Ubiquity6, alongside proven leaders from Meta, Google, and Apple, with deep expertise spanning hardware and software.

Open Roles: https://jobs.ashbyhq.com/sesame

- ML Engineers

- Product Designers

- Product Managers

- iOS & Android Engineers

- ML Model Serving Engineer

- Embedded OS Architect

- Mechanical Engineer, Product Design

- Embedded Engineers

- Electrical Engineer

- Audio Systems Engineer

Lantern | Software Engineers (Python, Full-Stack) | NYC (Onsite) | Full-time | withlantern.com Lantern is building AI-powered revenue intelligence—autonomous agents that turn cold outreach into warm conversations. We detect buying signals across your tech stack, prioritize opportunities, and help B2B sales teams focus on deals that actually close. We're early, agentic-first, and moving fast.

Senior Software Engineer: You'll own complex technical problems end-to-end—translating customer needs into scalable architecture, optimizing AI model efficiency through prompt engineering, and shipping features that directly impact how revenue teams operate. We want bold ideas and people who push boundaries.

Junior Software Engineer: You'll work across our stack (Python, FastAPI, Next.js, React) alongside senior engineers, contributing to real features from day one. Great fit if you're hungry to learn, ship fast, and grow with a startup building cutting-edge agentic systems.

New Grad Software Engineer: Entry point for recent grads excited about AI and agentic systems. You'll get hands-on experience with our modern data stack (Postgres, ElasticSearch, ClickHouse, DuckDB), Kubernetes/AWS deployment, and Temporal.io workflow orchestration while shipping production code.

This role is based in our Manhattan office (4 days/week in-person). Full health and dental coverage.

Apply: https://forms.gle/kEi5MDDiaJKdyN3fA or email maksym at withlantern.com with your resume.

Engineering Square | AI Engineer | San Francisco, CA | ONSITE | Full-Time | $175K + Equity

We're hiring an AI Engineer to build and ship production AI systems -- not research prototypes.

You'll own our AI pipeline: RAG optimization, GPU model deployment on Trident architecture, production MLOps (training, inference, model lifecycle), and agentic AI systems. This is for engineers who ship code, not notebooks.

Stack: Python (primary), C++/Java/C#, Docker, CI/CD, GPU infrastructure, RAG, model fine-tuning/distillation.

3-10 years production AI experience. Full-time W2 only.

$175,000/year + Equity. San Francisco on-site.

Apply: saikumar@engineeringsquare.us (subject: "AI Engineer -- [Your Name]")

Comper | Software Engineer #2 (Frontend focus) | €80-110k + equity | Utrecht, The Netherlands | ONSITE | https://comper.io

We make software landscapes understandable and explorable. Our canvas is zoom-to-code, and shows data on overlays from all of the git repos in your company. LLMs go through the codebase and extract the architecture.

We provide clarity when it's most needed: re-orgs, onboarding, explaining the tech stack at board meetings. Or just being stuck in your IDE and want to ask your team mate a question. We'd like to do to large org codebases what Figma did to design.

Comper needs someone that can build revolutionary UIs and go where no man has gone before. Our UI is the core of our product: a zoomable canvas that has all your code, documentation and diagrams on it. We have a long way ahead and need serious thinking to make sure we explain the software stack as simple as can be.

I'm the founder & CTO. We just raised a pre-seed and are now with 6 people. Find the vacancies on our site and send us an email.

any2any | On-site (Munich, Germany) | Full-time

About us: We provide access and visitor management platforms integrating a wide range of technologies. Backed by a large Swiss AG.

Hiring: Multiple roles; backend developer (Kotlin, PHP), frontend developer (Angular Typescript), app developer (React Native), support (1st/2nd level), testers (all roles on-site Munich only, 5 mins walk from Munich Ost).

Why join: Multiple technologies, room for growth, great offices near to the city centre and a growing dynamic team.

Contact: Please apply at jobs [at] any2any.co

Product incubator | REMOTE (US) | Consulting (1099)

We are a small team with a wide network, bringing ideas to market with a focus on simplicity and trust. Clients a mix of early-stage and enterprise. Seeking long-term collaboration with imaginative people who communicate well.

Teams are built around projects. At the moment, looking for the following:

- Experience in F&B logistics, pickup/transport/scheduling systems, price monitoring, banking integration, mobile shopping tools and redundancy for a neat client.

- Experience in local models/compliance/alignment at MA/PhD level for preventative medical AI client.

Otherwise, there's more in the pipeline so feel free to reach out now or in the future.

As a consultant, collaboration could be anything from periodic advisor to dedicated contributor.

As for technology, pragmatic - best tool for the job. Rough consensus and running code.

Based in NYC, with clients and team beyond the US. We've got a life to live.

Under wraps due to client, but otherwise transparent and operate in good faith.

Email in profile.

In addition to the search tools mentioned above, feel free to use https://nthesis.ai/public/hn-who-is-hiring. You can search and chat with the posts on this page. Updates live. I hope it helps! Note: The default view is a basic text / tag search, click on the "Chat" button to chat with the results (direct link: https://nthesis.ai/public/b28f0eb9-f5ac-4152-9a4c-152253d698...)

Nova Credit | Remote (US, Canada)

We're building a unified platform for credit and financial data to power financial inclusion globally. Our mission is to unlock economic opportunities for consumers historically excluded from traditional credit systems by transforming diverse data into actionable risk insights. We are YC company backed by investors from Canapi Ventures, Kleiner Perkins, General Catalyst, and Index Ventures

-> Hiring software engineers from Mid-Level to Staff

-> Tech stack: Node.js, React, TypeScript, Python, PostgreSQL, AWS

You'll work on enterprise-grade APIs, data integrations, advanced analytics, and seamless user experiences. We're looking for engineers who thrive in fast-paced environments and want to make a meaningful impact on financial inclusion.

Apply at https://job-boards.greenhouse.io/novacredit and mention HN.

River | Senior + Staff Engineers (Elixir, React, ML/AI) | SF or NYC or REMOTE (US, Europe, South America) | Full-Time | $150K-$250K + equity | https://jobs.ashbyhq.com/river

I'm Alex, founder and CEO of River. I also wrote the first line of code and still ship PRs.

River is a client-first Bitcoin-only financial institution building the financial app people use every day to save in bitcoin and spend in dollars. We custody over 25,000 BTC, serve individuals and businesses across the U.S., and are profitable. We publish cryptographic proof of reserves monthly and our company financials annually.

Here's what our engineering team is working on:

  - Real-time Bitcoin and USD payments, trading, and settlement on an Elixir monolith with a unified GraphQL API
  - Next-generation Bitcoin custody with quorum signing, key ceremonies, and geo-redundant infrastructure
  - Scaling our ML/AI systems (Python, PyTorch, XGBoost, LLMs) to automate operations and tackle fraud/risk
  - A ground-up React and React Native rewrite of our consumer app
  - Porting our Lightning Network infrastructure from Go into Elixir

  - Senior Software Engineer (React, Full-stack) | $150K-$220K
  - Staff Software Engineer (Elixir) | $200K-$250K
  - Staff Software Engineer (ML/AI) | $200K-$250K

Layer Health | https://www.layerhealth.com/ Amazing (and no ego) engineering team: https://www.linkedin.com/company/layerhealth/people/

Location: BOSTON (Boston Common) or NYC (downtown) - hybrid in both locations; <<NO REMOTE>> Headcount: ~38 and growing Stack:React / Typescript / Python / GCP

Open Roles (all roles require a MINIMUM of 6 years of work experience): Fullstack Engineer * ML Infrastructure (Staff+) * ML Engineer * ML/Research Scientist (PhD's) * Security Engineer * ML Engineering Manager (Director level)

We Offer: * competitive base salary + equity + great health/medical benefits * unlimited PTO * collaborative engineering-first culture

Layer Health was founded in 2023 by leading ML researchers from MIT and Harvard Medical School. We've built (and are live with multiple large health systems/hospitals) an ML product that scalably synthesizes patient medical records. Our LLM-powered platform is solving patient chart review - it dramatically accelerates clinical registry abstraction in areas ranging from surgery and cardiology, to oncology. Our long term vision is for our AI layer to safely transform patient care and minimize unnecessary heartbreak. Layer Health’s diverse founding team brings expertise across machine learning, UI/UX, large language models, and medicine.

Email me at mike.hauschild@layerhealth.com for more info

Schema Labs (OpenCouncil) | Civic Tech Software Engineer | Athens, Greece | Hybrid (3 days in office) | €55K-65K

We're a 4-person non-profit building OpenCouncil (https://opencouncil.gr), an AI platform that makes Greek municipal council meetings accessible to citizens. We take hours-long council sessions and turn them into searchable, per-topic video clips, SMS/email notifications, and speaker analytics.

We're live with 10 municipalities including Athens, and the project is open source: https://github.com/schemalabz/opencouncil

Stack: TypeScript, Next.js, React, PostgreSQL, Elasticsearch. Heavy use of LLMs for transcription, speaker ID, and turning unstructured PDFs/transcripts into structured data. We use Claude Code, Cursor, and similar tools daily.

Looking for: 2+ years experience, strong web dev skills, genuine interest in civic tech. Bonus if you're strong in either data engineering/LLM integration or frontend/UX. Must be based in (or willing to relocate to) Athens, fluent in Greek and English.

We offer up to 30% annual profit sharing, lunch on office days, and up to 3 days/week remote. Small team, high ownership, real impact.

Details & apply: https://schemalabs.gr/jobs/civic-tech-software-engineer