Silicon45 | kdb+/q Expert | Contract (part-time OK) | Portland, OR (Hybrid) or Remote

We're building a heterogeneous execution platform to accelerate data analytics and ML workloads, and we're looking for a deep kdb+/q expert to work alongside our hardware acceleration team. You'll focus on kdb+ internals, query optimization, and the C API, helping us understand how queries execute under the hood, where the bottlenecks are, and how to integrate acceleration into kdb+ workflows.

Looking for: expert-level kdb+/q, engine internals, query planning/optimization, C API extensions, performance analysis. Nice to have: exposure to hardware acceleration concepts.

Apply: email amir@silicon45.com with your resume and a short note on 1-2 performance-critical kdb+ systems you personally built or optimized.

Stpkr Technologies | Noida, India (Delhi NCR) | ONSITE | Multiple roles

Stpkr Technologies is hiring for the following roles to build the next generation of wearable devices.

We are currently looking for the following roles but we are also open to interviewing any candidates who feel like they will do their best work here - even if your skillset/experience doesn't fit the current defined roles. Our current team doesn't fit the conventional mold, and we don't expect our future hires will either. If you don't fit the advertised roles, just send us a mail per the same process with whatever job title would fit you the best.

Work is in person near Noida Sector 18, walking distance from Sector 18 Metro Station. We prefer in office work, and for you to be located within Delhi/NCR, Pay is competitive (9-12 LPA), and there are opportunities to earn meaningful equity down the line. We prefer current and recent undergraduates for our roles. If you are still in college we welcome you to apply nonetheless provided you can work as an intern for us in person. Super-flexible overall and all of our current team started out as interns.

Hiring across OS, software, and hardware. AI policy across all roles: you should be able to do the work without AI, and much faster with it.

Systems Engineer - Everything at the OS layer. You've rooted phones, flashed custom ROMs, broken and fixed Linux for fun. Comfortable in C/C++. GitHub with kernel-adjacent or LineageOS-type projects a plus. Stack: Android, Linux, C, C++, Java. Filter: send us something you built where you had to fight the OS or hardware.

Hardware Engineer - Bring-up/Debug/Integration - Take EVT/DVT boards and make them work. Comfortable with J-Link and IDE debugging, reading schematics and reference designs. KiCad/Altium/EasyEDA hobby work would make you ideal. PetaLinux experience or hunger to learn it. ECE undergrad fine. Filter: photo of a board you designed or debugged, plus what went wrong.

Hardware Engineer - Power/RF/Wireless - Make the power and RF paths behave on EVT/DVT boards. Hands-on with schematic capture, layout, soldering, scope/logic analyzer. Given two unknowns, you pick one and start measuring. Filter: sensor fusion work, how noise behaves across protocols, and SPI debug chops.

Founder's Office - Work closely with the founder and the rest of the team to manage the day to day and long term affairs of the company, the Man Friday of the company. Must have a decent degree of technical knowledge (we are a tech company after all) and be efficient at administrative tasks as well as management. Speed and learning ability are prized here, there will not always be a clear path to the work you have to do here, so you will have to figure some of it out on your own.

To apply, contact arnav@stpkr.in with the subject line "HN - Human" and a brief intro for further communication. Attach any documents you deem useful there. Please include the role you are applying for at the top of the email if it is one of the above mentioned, otherwise whatever role fits you best. Shortlisting will be online, interviews will be in person. We are hiring quickly, expect to hear back from us within 2-3 days of applying. If you don't, assume you will not. If you are using an AI agent to mass apply for jobs and we can tell, then you will not hear back. Use an expensive one :P Thanks for your time!

Rhythm | Senior Embedded/Firmware Engineer | Chicago, IL | ONSITE (Hybrid ok) | $180k–$250k + equity

Rhythm is a medical device startup headed toward FDA clearance. We're hiring a senior firmware engineer to own solution architecture and embedded development: C/C++ on ARM Cortex-M, BLE, sensor integration, IEC 62304 through 510(k).

Looking for 7+ years of embedded experience, time in medical devices, and startup experience

Email: kanishk@rhythmpap.com

Solution Street | Northern Virginia (Washington, DC Metro Area) Remote & Hybrid roles available - USA only.

We are a software consulting company based in Northern Virginia. Our Website: https://www.solutionstreet.com/

Interested? Send your resume (Please mention Hacker News in subject line) to our Recruiting Manager Cristina Little - Email: clittle@solutionstreet.com

Current Opportunities:

- Automated Test Engineer - Electrical Engineering: (Onsite Dulles, VA) Contract role for 1.5 years. Skills and Qualifications: Experience in Python programming; Electrical Engineering experience; Python - async-io cooperative multitasking; State machines; SCPI equipment such as Keysight or Keithley.

- Java Engineers All levels: (Hybrid Chantilly, VA) Seeking all levels of full stack Java engineers with experience in Java, Spring and Kubernetes.

- Automation Testers Lead/Senior and Mid Level: (Hybrid Chantilly, VA) Experience with Java and Selenium. Must be comfortable coding in Java. This role would also be suitable for a Junior Java developer.

- .NET and Azure Architect: (Remote/US based candidates only) Modernization project seeking expertise in full-stack .NET development, C#, modern JavaScript frameworks; secure API design, and Azure cloud deployments.

- Senior .NET Engineer: (Remote/US based candidates only) C#, .NET, Angular, and Azure.

- Devops Engineer: (Remote/US based candidates only) Skills: AWS expertise; EKS (Elastic Kubernetes Service); Terraform; Helm charts; Network security. Nice to have skills: FedRAMP High compliance experience; FIPS 140-3 cipher compliance; WebRTC infrastructure experience; Government clearance experience.

- UX Designer: (Remote/US based candidates only) Feel free to reach out if you are an experienced UI/UX Designer, always seeking to get to know candidates with this skill set.

GTX - https://www.gtx-uk.com/ | Senior/Lead C++ Engineer | London | Hybrid | Full Time

GTX is an ETF market maker, quoting across European exchanges. We're a small team of traders, quants and engineers building the systems that price, hedge, and trade thousands of instruments in real time.

We're looking for experienced C++ engineers to build out our next generation of market making systems, making architectural decisions that will shape how we trade for the next decade.

The right candidate has extensive production experience building latency-sensitive systems using modern C++, and experience in market making, electronic trading or exchange connectivity.

* Benefits and perks: competitive salary, health insurance, casual work environment, inclusive team-oriented culture, rapid career growth opportunities, high impact work.

Apply here: https://gtx-uk-llp.careers-page.com/jobs/62ec210b-cf39-4e43-...

AMD | Rust, Compiler, and Systems Engineer, Senior or Staff | San Jose, CA | ONSITE | Full-time

I'm looking for a strong compiler and systems generalist to join me at AMD in San Jose.

This role is for someone who enjoys moving across abstraction layers and solving difficult, open-ended engineering problems. Relevant experience may include LLVM, MLIR, compiler frontends or backends, intermediate representations, optimization and code generation, language runtimes, Rust or C++, low-level GPU systems, firmware, program analysis, or formal methods.

Rust is central to the role. We are investing in Rust for low-level systems where performance, control, and correctness all matter, and this person will help make that investment successful. You should be excited to write substantial production Rust and to improve the compiler, tooling, interfaces, and engineering practices around it. Deep Rust experience is valuable, but a strong compiler or C++ systems engineer who is serious about becoming highly effective in Rust can also be a good fit.

You do not need experience in every area. Strong fundamentals, sound technical judgment, and the ability to become productive in unfamiliar parts of a large systems stack matter more than matching a fixed list of technologies. We value people who can connect architecture to implementation, build rigorous tests, and communicate clearly about correctness and tradeoffs.

This is a full-time, onsite position in San Jose, California. To learn more, email me directly at harsh.menon@amd.com with "HN" in the subject. Please include a short introduction and a resume or links to relevant work.

Brightcore Energy | Senior Embedded Software/Hardware Engineer | Brooklyn, NY (hybrid, 3 days/week onsite) | Full-time | $140k-$170k+ base, flexible for the right experience, plus annual bonus

Brightcore Energy designs, builds, and operates clean energy systems, geothermal, solar, and building energy efficiency, for commercial and institutional buildings. A growing share of our work is managing geothermal cooling assets at data centers.

We're hiring an owner for Brightcore EDGE, an on-prem industrial PC that runs our control and optimization algorithms directly at customer sites, including data center facilities where real-time energy management is mission-critical. You'd select and harden the industrial PC and Linux platform, build the imaging, provisioning, and fleet-update process, integrate with building management systems over BACnet and Modbus (Schneider Electric, Johnson Controls, Honeywell, Siemens), build the local time-series data logging and telemetry pipeline, and implement OS hardening, disk encryption, and network segmentation to satisfy OT security reviews at high-security sites.

Reports directly to our VP of Innovation. Looking for 5-8+ years in embedded systems, industrial controls, or edge/IoT, strong Linux, Python and/or C/C++, and some BACnet/Modbus background. It's a high-ownership, spec-it-and-build-it role, you'll be buying hardware and shipping working prototypes without a lot of process overhead.

Apply: https://job-boards.greenhouse.io/brightcoreenergy/jobs/51874...

Preferred Networks | Tokyo or Remote in Japan | Full-time | https://www.preferred.jp/en

Preferred Networks is an AI company based in Tokyo working across the stack, from AI chips and computing infrastructure to LLMs and products. You may already know us indirectly if you've used software we've built, such as Optuna or CuPy (or Chainer, back in the day).

We are designing in-house chips (MN-Core series: https://mn-core.com/) and training LLMs (PLaMo series: https://huggingface.co/pfnet), and our team is actively hiring for two roles related to these endeavors:

- MN-Core LLM Serving Engine Engineer: Build software infrastructure to serve LLMs using our upcoming inference accelerator, MN-Core L1000. [Apply here: https://open.talentio.com/r/1/c/preferred/pages/121580]

- LLM Inference Optimization Engineer: Improve the inference engine powering our API service and maintain PLaMo implementations in open source projects such as vLLM. [Apply here: https://open.talentio.com/r/1/c/preferred/pages/119173]

Both roles require relocation to Japan. We are happy to provide visa and relocation support.

Spacelift | Remote (Europe) | Full-time | Senior Software Engineer | $80k-$110k+ (can go higher)

We're a VC-funded startup (recently raised $51M Series C) building an infrastructure orchestrator and collaborative management platform for Infrastructure-as-Code – from OpenTofu, Terraform, Terragrunt, CloudFormation, Pulumi, Kubernetes, to Ansible.

On the backend we're using 100% Go with AWS primitives. We're looking for backend developers who like doing DevOps'y stuff sometimes (because in a way it's the spirit of our company), or have experience with the cloud native ecosystem. Ideally you'd have experience working with an IaC tool, i.e. Terraform, Pulumi, Ansible, CloudFormation, Kubernetes, or SaltStack.

Overall we have a deeply technical product, trying to build something customers love to use, and have a lot of happy and satisfied customers. We promise interesting work, the ability to open source parts of the project which don't give us a business advantage, as well as healthy working hours.

If that sounds like fun to you, please apply at https://careers.spacelift.io/jobs/3006934-software-engineer-...

You can find out more about the product we're building at https://spacelift.io and also see our engineering blog for a few technical blog posts of ours: https://spacelift.io/blog/engineering

Unitary Foundation | Member of Technical Staff, Fault Tolerant Quantum Compilation + Simulations | REMOTE (US) | Full-time

Unitary Foundation is a 501(c)(3) non-profit research group building a quantum technology ecosystem that benefits the most people. We build open-source infrastructure for quantum computing — current projects include Mitiq, UCC, and Clifft — and run community programs like microgrants and unitaryHACK.

We're hiring an MTS to help define and build our open-source compilation and simulation stack: compilation, simulation, error mitigation, resource estimation, benchmarking, and early fault-tolerant workflows. You'll join a small technical team doing research through sponsored collaborations with national labs, universities, and industry partners. The role is about technical ownership — forming a technical point of view, proposing roadmaps, and building tools that become useful shared infrastructure. There's also room to experiment thoughtfully with AI-assisted research workflows.

We're looking for a track record of building software other people use (ideally open source), a strong background in quantum computing (fault tolerance, error correction, compilation, simulation), and strong Python; C++/Rust is a plus. A PhD is one possible background for this role, but not required.

Apply at https://unitary.foundation/jobs/mtscs/

Lokker.com | Senior Backend Engineer, Scanning Infrastructure | REMOTE: North America / Europe, UTC-8 to UTC+2 | Full-time

Lokker is a privacy platform that helps organizations understand and control what is happening across public-facing infrastructure: websites, browser-side applications, scripts, pixels, cookies, tags, forms, SDK/API calls, and browser-side data flows.

We are hiring a senior backend engineer to own and continue to scale Lokker’s scanning infrastructure. This role focuses on backend systems for high-volume website scanning, browser automation, distributed scanning, networking, reliability, performance, and cost optimization.

IMPORTANT: A key requirement for this role is substantial, hands-on production experience with browser automation, headless browsers, crawlers, scanners, synthetic monitoring, scraping infrastructure, or closely related technologies. This is not a general backend role, and we can only consider candidates who have already built, operated, or scaled systems in this domain.

Other relevant experience includes distributed systems, queues/orchestration, high-scale backend services, HTTP/TLS/DNS, proxies, CDNs, WAFs, bot detection, and fingerprinting.

Production experience in Go, Rust, TypeScript/Node.js, C++, or similar.

Apply: https://lokker.com/careers/openings/senior-backend-engineer-...

Amodo Design (amododesign.com) | Sheffield/London, UK | Software Engineer | Full-time | Onsite or Hybrid

We are hiring software engineers who enjoy solving important real-world problems and working close to hardware; who learn new domains quickly and prefer practical solutions over over-engineered systems or unnecessary complexity. You’ll work on the projects best suited for you. Projects range widely, and include:

- Scientific tools

- Automation & robotics (Linux & ROS level)

- Embedded C/C++ (typically owned by dedicated firmware engineers, but software engineers are welcome to learn!)

- Linux, CUDA, Server engineering for our AI safety, security, and verification work

- Custom simulation software (usually python)

- Data analysis pipelines (python)

- Organisational tooling (Typescript, react, postgres, etc.)

Structure: Small teams of software, mechanical, electronics, and firmware engineers build end-to-end systems, typically shipping within a few months.

Apply: https://amododesign.com/career

Lopaka | Embedded UI / Graphics Engineer | REMOTE | Contract | Part-time | $80–140/hr | https://lopaka.app/careers

Lopaka is a browser-based UI editor and C/C++ code generator for embedded displays (OLED, TFT, e-paper). Around 20,000 hardware developers use it to design interfaces for ESP32, STM32, AVR, Arduino and other platforms.

We're building DevPet, a small animated desktop companion for developers (think Tamagotchi meets build monitor). We're looking for an experienced embedded UI engineer to help design the UI architecture and build a polished animated interface that runs within tight memory and performance constraints.

You'll work on:

Embedded UI architecture Character animations and state transitions Sprite, bitmap and font pipelines Rendering optimization (dirty rectangles, partial redraws, partial refresh) Display and hardware trade-offs Integrating Git activity, build status and notifications into the UI

We're looking for someone with experience in:

C/C++ Embedded graphics LVGL, U8g2, TFT_eSPI, Adafruit GFX or similar OLED, TFT or e-paper displays ESP32, STM32 or similar MCUs

Side projects are absolutely welcome—we care more about what you've built than where you've worked.

Contract: ~10–15 hrs/week for approximately 6–8 weeks, with the possibility of ongoing collaboration.

Apply here: https://lopaka.app/careers

Canopy | Staff Software Engineer, Sensing | SF Bay Area (Peninsula) | HYBRID | Full-time | $200-225K + equity | https://canopyworks.com

Canopy builds the real-time coordination layer for hospitals: communication, safety, location intelligence, and response across large, complex care environments. Every hospital is a logistics problem wrapped around a clinical one, with millions of people and events an hour across the country. When a building can sense itself in real time, the gap between an event and the right person arriving goes from minutes to seconds. People are safer, care arrives faster, and hospitals and clinics get a path to modernize on the infrastructure they already run. Sensing is the foundation.

You'd build our next-generation sensing and ML pipeline (the "physical full stack"), from sensors and embedded firmware through edge algorithms to the backend and frontend services. Physics-based modeling for sensing problems that traditional IoT products can't solve, in devices that have to survive harsh environments. We care deeply about hardware-in-the-loop platforms, simulations, and internal tools. Ideal candidates have shipped production features on both sides of the hardware/software line.

What we've deployed recently: TypeScript, WASM, Rust, C, Python, RTOS (Zephyr, FreeRTOS), embedded Linux.

If you care about the difference between 99.99% and 99.999%, and about the frontline medical staff relying on that last nine, you'll like it here.

Apply: https://job-boards.greenhouse.io/canopyworks/jobs/4317128009 AND email hn <at> (company domain) about a real-world sensor that broke your prior assumptions: what you expected, what the data actually did, and what you changed.

Eleos Technologies (https://eleostech.com) | Remote Senior iOS Engineer | Permanently Remote (US-based applicants only) | Full time

Eleos Technologies is a growing company building communication software for truck drivers and the back-office workers who support them. We’re looking to scale up a second product engineering team to ship more advanced driver planning tools, automate outdated workflow, and a bunch of other wins to make drivers’ lives easier and more efficient.

We're looking for someone who has the experience to move fast on new stuff and knows how and when to pick their battles on old stuff. You'd be one of four iOS engineers at a company that's big enough to survive an economic downturn, but not so big you can't make immediate, direct impact that'll be seen and appreciated by the whole company. (We've also spent the last decade working really hard to make sure our tools, processes, and culture respect everyone's work/life balance. I'm the CTO and I don't text people on my team, and they don't text me, and that's true throughout.)

It's a native iOS app written in a mixture of Objective-C and Swift, leaning on Swift for new features. (But that said: if you chafe at the idea of maintaining or fixing bugs in battle-tested Objective-C that's paying our salaries, please look elsewhere!) We have about 1/3rd functional/UI automated test coverage and the rest is human-powered by our QA team.

If you're interested, please share your info via https://jobs.lever.co/eleostech/b4866f22-fab3-4f84-abec-6e74... and we'll get in touch!

Stellar Science | Hybrid (USA) Albuquerque NM, Washington DC (Tysons VA), Dayton OH | Full time, interns/co-ops | U.S. citizenship required | https://www.stellarscience.com

Company: We're a small scientific software development company that develops custom scientific and engineering analysis applications in domains including: space situational awareness (monitoring the locations, health and status of on-orbit satellites), image simulation, high power microwave systems, modeling and simulation, laser systems modeling, AI/ML including physics-informed neural networks (PINN), human body thermoregulation, computer vision and image processing, high performance computing (HPC), computer aided design (CAD), and more. All exciting applications and no CRUD. We emphasize high quality code and lightweight processes that free software engineers to be productive.

Experience: Except for interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field. Masters or PhD is a plus. (Roughly 25% of our staff have PhDs.)

Technologies: Lots of C++23, Qt 6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and analysis projects use Python and C++. Web projects use Java and Typescript/React. We're a bit behind the curve on developer AI adoption, and we're okay with that.

Apply online: at https://www.stellarscience.com/careers/.

Apex Dental Partners | Full-Stack Developer | Dallas, TX (Remote US or Hybrid) | apexdp.com

We're a Dental Support Organization running 65 practices across TX/OK/CO/MO/IA/NE/TN/AZ. The unsexy industry description hides what's actually an interesting technical role: a small dev team with real ownership, pushing hard on automation and AI to make dental operations actually work well.

Stack is primarily Rails 8 + React, Electron, C# .NET (OpenDental), and Go — all on AWS.

You'd be joining a tight team where developers own problems end-to-end: from understanding why a billing workflow breaks down, to designing the fix, to shipping it. The domain is surprisingly broad — patient communication, PMS integration, payroll, clinical workflows — and there's no shortage of genuinely novel problems once you learn the business.

Good fit if you like: stable company, small team, broad latitude, and work that visibly matters to the people using it. Not a fit if you need a large eng org — but there's plenty of greenfield work as we're still actively building new features, not just maintaining legacy code.

Drop me a line: dhanson [at] apexdp.com

Category Labs | https://www.category.xyz/ | Remote and NYC | Full Time | $200K USD+

Category Labs (formerly known as Monad Labs) is a team of systems engineers and researchers on a mission to design and build at the frontier of decentralized technology. We strive to design and build step-function improvements over existing blockchain solutions. After raising $225M in series A funding, led by Paradigm, we are growing our team.

We’re the team behind Monad, a high-performance, EVM-compatible Layer 1 whose public mainnet is now live. We write the core software that runs it: a parallel-execution EVM, a custom state database, and a BFT consensus client, all developed in the open.

Senior Software Engineer (C++ / Rust): https://jobs.ashbyhq.com/category-labs/a0af69a1-8a77-4bda-b5...

Senior Software Engineer, Formal Verification: https://jobs.ashbyhq.com/category-labs/4717412e-8243-4eb9-be...

Senior Software Engineer, Compiler: https://jobs.ashbyhq.com/category-labs/e5c34899-cea1-4d25-be...

Smart Contract Engineer (Solidity): https://jobs.ashbyhq.com/category-labs/776ce314-aa12-471b-92...

CodeWeavers | St Paul, MN, USA | Full Time | REMOTE | macOS low-level Open Source Developers | C-language systems programming

https://www.codeweavers.com/about/jobs

CodeWeavers needs new, full-time developers to improve Wine's ability to run games on macOS. Positions are available to work on a variety of Wine-based software, including CodeWeavers's own CrossOver product and projects for other clients. Positions working on the FEX emulator are also available.

We are hiring remote programmers, US or international, as well as workers local to Saint Paul, Minnesota. We will consider relocation, if desired, on a case-by-case basis. Please see link above for information, benefits, requirements, and how to apply.

Please direct any questions to the email address on our Jobs page.

Distru (https://www.distru.com) | Senior Software Engineer | AI Product Engineer | Senior Product Manager | REMOTE (Americas & Europe) | Full-Time

Distru is the #1 ERP in the cannabis industry. $3.5B in annual GMV flows through our platform, and most of the top cannabis brands and distributors in the US run their entire operation on us to stay compliant.

We're profitable, stable, and growing. No runway anxiety, and we're reinvesting into new product lines. We're an intrinsically motivated team that works without ego, is constantly learning, and genuinely cares about our people (5/5 on Glassdoor).

Distru is at an inflection point. We have deep market penetration in cannabis ERP, a new commerce layer (Distru Commerce, a B2B wholesale marketplace) live and growing, and a roadmap with a growing AI component. Our live AI Order Agent already lets buyers submit orders in any format from any source, killing manual data entry, the first of many bets on using AI to strip the repetitive heavy lifting out of running an ERP.

The roles: You'll own mission-critical parts of the product end to end, from planning and design through implementation, testing, and shipping. You might work on AI-native features (order/purchase intake, smart product matching, systems that learn from user feedback), Distru Commerce storefronts and ordering, manufacturing and distribution workflows, cultivation mobile tools for the floor, or compliance integrations with state systems like Metrc. These are high-ownership roles: you'll partner directly with product, design, support, and our C-suite, and you'll get customers writing you personal "thank you" emails.

Stack: React + TypeScript, Elixir/Phoenix + GraphQL, PostgreSQL, React Native, LangGraph

Please apply at https://distru.com/careers and mention Hacker News!