ZioSec Is Hiring a Senior Backend Engineer (Rust/PostgreSQL/GCP) - Remote

The Problem: Agentic AI systems are becoming increasingly powerful and autonomous. Most companies deploying them have no idea how vulnerable they are. We're building the offensive security platform that will become the industry standard for AI safety testing.

The Opportunity: Join us as our lead Backend Engineer and own critical infrastructure that will protect the next generation of AI systems. You'll architect high-performance Rust services that facilitate AI-driven attacks, manage complex state machines for AI agent interactions, and build the data pipeline that turns chaos into actionable security insights.

Our TWiST Interview: https://www.youtube.com/watch?v=rL9UCGVZEjs

Apply Here: https://wellfound.com/recruit/jobs/3362126

Redox OS | Remote | Rust | FOSS | Kernel Dev

Redox OS is a Unix-like general-purpose microkernel-based operating system written in Rust, aiming to be a complete alternative to Linux and BSD. It is community developed and MIT licensed.

Redox is seeking an OS/kernel developer, paid through a combination of grants and contract work. If you are a committed FOSS developer, with expertise in Rust, device drivers and performance-optimized software, we are interested in hearing from you.

This is a fully remote position. There are some geographic preferences and limitations. Check out this month's report for more details.

https://redox-os.org/news/this-month-250731/

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 recently raising $225M in series A funding, led by Paradigm, we are growing our team.

Senior Software Engineer (Rust, C/C++): https://jobs.ashbyhq.com/category-labs/45f674b2-d904-482e-a5...

Software Engineer, Early Career (Rust, C/C++): https://jobs.ashbyhq.com/category-labs/0dfdffdf-cefb-48fb-bb...

Senior Security Engineer (distributed systems): https://jobs.ashbyhq.com/category-labs/0a054dfb-a748-4935-9d...

Senior Researcher, Systems: https://jobs.ashbyhq.com/category-labs/015934c5-66e5-4042-94...

Immunant | Systems Programmer | REMOTE (US only) | Full-time | $120k - $150k + retirement benefits

If you're interested in low-level, resource-constrained and privileged execution environments, consider joining our team of compiler, OS, and Rust enthusiasts.

At Immunant, we spend much time staring at weird build errors, ISA or ABI documentation, or digging through obscure build systems or C code written 20 years ago. In any case, we strive to make the systems we're working on more secure, more efficient, and have more Rust in them (whenever we get a chance).

We also maintain and enhance the fully open source c2rust translation framework.

If you have recent, professional experience with C/C++ and Rust and know about operating systems, hypervisor internals, or compilers, we'd love to hear from you. Candidates with only superficial knowledge in all of these areas are not encouraged to apply. Please note that we can only consider candidates resident in the US.

We offer a remote-friendly, collaborative work environment with a high degree of autonomy and competitive benefits.

To apply: team@immunant.com

We look forward to hearing from you!

Freeform (http://freeform.co ) | Software Engineers | Full-time | Onsite |Hawthorne, CA (Los Angeles County)

Freeform is deploying metal 3D printing factories at global scale and setting a new frontier in manufacturing. With AI, GPUs, and FPGAs working in tandem, our system monitors and corrects every microsecond of the process, delivering a level of precision, speed, and quality that’s never been possible—until now. This isn’t just an improvement; it’s a leap forward in how complex metal parts are made, with the ability to revolutionize industries like aerospace, defense, automotive, energy, and beyond. We are backed by top VCs including NVIDIA’s NVentures, Founders Fund, and Threshold Ventures.

It’s a small, tight-knit team and you’d have the opportunity to own significant and impactful greenfield projects throughout the entire development lifecycle and much more. Our software team comes from the likes of Google, SpaceX, and Apple, and believe in taking a first principles approach to solving hard problems.

A glimpse into our software landscape - https://youtu.be/nFWQArUkd5I?si=mP17qdKbxvf8qpZN

Our feature in TechCrunch! https://techcrunch.com/2024/10/22/ex-spacex-engineers-land-1...

+ Senior Software Engineer (C++) - https://grnh.se/7de8s2573us

+ Senior Software Engineer (Rust) - https://grnh.se/udslpi7q3us

+ Software Engineer (C++) - https://grnh.se/032pj08j3us

+ Software Engineer (Rust) - https://grnh.se/l5gpu56o3us

ThreatMark | Security, Machine Learning | REMOTE(World) / Brno, Czech Republic | Equity ThreatMark protects >50M end users from finacial fraud and saves > $100M every year in losses. We are working with top banks in EU and US to protect their end users.

We develop large-behavioral models that recognizes returning users by their mouse movements, keystroke timings and sensoric data (accelerometer, gyroscope). We detect cyberthreats (e.g. malware, phishing, scraping) by exploiting browsers/sandboxes of devices. We manage ~PB scale of data and provide realtime scoring in milliseconds driving authentication/authorization flow (2nd factor).

Stack: [python, typescript, rust], [redis, postgresql], [aws, terraform] ...

We are looking for exceptional engineers to build with us and be part of the success:

- Research Team Lead [hands-on role] (leading world-class ML engineers to success - focus, context translation, project management, measurement, ...)

- Engineering Team Lead [hands-on role] (structure, organize, help, elevate) - lead of team dealing with backend - low tail latencies, distributed systems, petascale

- DevSecOps Engineer (blue team - designing, implementing secure infrastructure)

- Product Manager (self driven, tech-enabled go-getter - expert on fraud and/or scaling a startup from product perspective)

- DevOps Engineer (IaaC in AWS)

We are also looking for other key roles:

- Chief Revenue Officer - be responsible for growth in US & EU

If you are interested, please email us @ career@threatmark.com with subject "HN Who's Hiring" If you don't find the right role here or at https://www.threatmark.com/careers/, write us anyway if you believe you can be good fit :)

Krystof Hilar, Co-Founder & CTO

Hellas.AI | Remote | Full Time or Contract | https://hellas.ai

Hellas.AI is building a compiler for categorical deep learning to power decentralised, serverless AI.

We're looking for an experienced Rust engineer. You must have demonstrated:

* Experience in designing and implementing BFT consensus protocols * Ability to engage with academic literature on distributed systems * Understanding of ZK proofs and proof aggregation (you don't need to design these, but you should know how to use them)

Nice-to-have: interest or experience in:

* Deep Learning / ML / AI, GPU programming * Compilers and array programming languages * Category Theory and string diagrams

If you have project(s) demonstrating your experience in one or more of these areas, get in touch!

Our process is simple: we read code you've written and research you've published, then interview you about it. We don't do tedious coding tests.

Email us at hello@hellas.ai

AllSpice | https://allspice.io/ | Boston, MA / SF or Hybrid | Full time (US timezones) | Mid/Sr./Principal/Staff | Golang, Vuejs, Rust

At AllSpice, we're building the future of hardware development and collaboration, applying modern software design principles to the hardware industry with design review, automated test, and Gen AI (think GitHub/Bitbucket for hardware). AllSpice is unlocking the next generation of smart vehicles, IOT devices, rockets, medical devices, robotics, and much more.

Read more about our latest Series A announcement in TechCrunch (https://techcrunch.com/2025/06/23/allspices-platform-is-the-...)!

We have a highly capable, tight-knit, remote-first team with a flex office in Somerville, MA and SF. We strongly value continuous communication and personal development. See more on our careers page https://allspice.io/careers

We’re hiring primarily for:

Principal/Lead Software Engineer - You'll lead our platform software team (Vue, TS, Golang, Playwright), building and improving our data architecture for git-based hardware design management. https://jobs.ashbyhq.com/allspice/1dd0081e-1124-4dea-b16f-e3...

Sr./Principal Product Manager (Platform) - You'll lead our core product platform user experience, with new ECAD file integrations, collaboration features, and improved onboarding experience for git. You should have some experience in the hardware design process and git. https://jobs.ashbyhq.com/allspice/4d547ef4-e8c5-47c1-861d-15...

Sr./Principal Technical Product Manager (AI) - You've been an early adopter, introducing AI features in your past products. You understand how to tame large amounts of data for use in RAG to get consistent, functional output from LLMs, and you're not afraid to talk tensors. https://jobs.ashbyhq.com/allspice/a37723bf-b043-41b1-9365-e5...

Mid+ SW Parsing and datastructures (rust) - Systems programming experience required. You'll be responsible for helping develop our ECAD schema and convert between file formats efficiently. This role can flex to be pretty senior if you have more experience than is listed. https://jobs.ashbyhq.com/allspice/9abcef59-988f-4f1a-b4b5-c6... https://jobs.ashbyhq.com/allspice/5c889644-642a-468e-8289-3f...

Lead/Principal Infrastructure Engineer - You are passionate about optimizing infrastructure at scale and have a strong background in security engineering, AWS, and infrastructure automation. In this role, you will be responsible for working with company leadership to build our infrastructure roadmap and team, as well as executing tasks (80/20 individual contributor work to management, with greater management opportunity available as the team grows). https://jobs.ashbyhq.com/allspice/99ded9f3-4de0-420e-bedb-50...

Tech Stack: Docker, Terraform, GoLang, Rust, Python, Vue, Typescript

Please include any relevant open-source projects or portfolio in your application.

Neuralwatt | https://neuralwatt.com | REMOTE (US – Seattle/Denver/Boulder metros only) | Full-time | $180k–$220k DOE

Energy is the #1 constraint in new datacenter buildouts. Neuralwatt is reshaping AI compute around energy efficiency to maximize revenue per kilowatt. We’re a VC-backed, early-stage startup building optimization tools for AI, HPC, and datacenter workloads.

We're hiring 2 founding engineers to help architect our core systems and work directly with customers.

What you'll do:

Technically: Architect critical datacenter infrastructure - Write Rust and Python - Measure real-world energy impact - Design state-of-the-art AI-led optimizations

Non-technically: Help build the business and win customers - Present at conferences - Develop marketing and company materials

Requirements:

- 5–10+ years of software development experience

- Thrive in ambiguous, outcome-driven environments

- Experience working closely with customers

- Clear communication and strong leadership

- Familiarity with LLM/AI infrastructure

Location: Remote-first, but we meet regularly in Seattle/Denver metro areas.

To apply: Email: scott@neuralwatt.com Subject: HN Hiring Include: - Resume - GitHub profile - A short note on why you're interested

Privacy-focused AI Project | Founding Engineer | Remote - Europe (UTC-1 to UTC+3) | Full-time | Base salary + Up to 4% equity

We are building a truly private, open-source LLM gateway with outstanding user experience to address privacy problems around using LLMs. When we interact with AI-based services, we face the fundamental tension between utility and privacy. Current solutions to this problem are inadequate, so we are ready to build what we couldn't find.

Who are we? A well-funded, bootstrapped venture by the founders of IVPN - a VPN service highly regarded by privacy advocates and analysts, in operation since 2009.

We are looking for a Founding Engineer (based in Europe) to architect and build an MVP from the ground up. This is a role for a senior builder with:

- At least 8 years of professional experience

- Demonstrable history of solo-shipping products

- Deep expertise across the stack (e.g., Go/Rust for backend, React/Vue for frontend)

- Strong security and infrastructure automation mindset

What you can expect:

- Founder-funded, sovereign startup = no VCs and external pressure

- Small, dedicated, 100% remote team that prefers pragmatism and maximum autonomy.

- Complete technical ownership, responsible for building a system designed for high availability and verifiable privacy.

- Sole focus on engineering - zero distractions. Founders own strategy, functional requirements, design, communications, legal and all other business related decision and execution.

- Strong salary and a significant, foundational equity stake (up to 4%).

If you're a self-directed, experienced engineer who wants to build the foundational infrastructure for private, trustworthy AI access, email me at viktor at ivpn.net for a one-page project brief.

Entourage | REMOTE | Principal AI Engineer – Collective‑Memory / Multi‑Agent Systems | Full‑time + meaningful equity

We’re building the shared‑memory protocol that lets AI agents learn from each other, turning isolated tools into a network of collective intelligence. Backed by Moonsong Labs (creators of Kluster.ai, Moonbeam, Tanssi), we’ve secured fresh funding and are ready to scale from proofs‑of‑concept to production.

What you’ll do - Design and ship distributed infrastructure that captures, validates, and surfaces agent experiences in real time. - Operationalise SOTA research in LLMs, RL, and multi‑agent coordination into fault‑tolerant, low‑latency services. - Turn episodic trajectories into reusable knowledge for a growing ecosystem of mutually distrusting agents. - Set technical standards, mentor engineers, and grow the AI platform team.

Tech you’ll touch Python, Rust/Go, LangGraph / AutoGen / CrewAI, vector & graph stores, Temporal / Kafka, k8s, Terraform, modern GPU/cloud stacks. Web3, consensus, or token‑incentive know‑how is a nice‑to‑have.

You bring - A record of shipping complex AI or distributed‑systems platforms (startup or research labs welcome). - Deep appreciation of LLM post‑training, multi‑agent frameworks, and end‑to‑end MLOps. - MSc or (ideally) PhD in a STEM field; 5 + yrs hands‑on engineering. - Desire to lead and still stay close to code.

Why Entourage - Green‑field architecture, zero legacy. - Direct impact on the connective tissue of the coming agent economy. - Competitive salary, generous equity, hardware budget, London hub with quarterly off‑sites. - Inclusive culture – we hire for talent and potential, not pedigree.

Apply: https://jobs.lever.co/moonsong-labs/baec5545-5890-4dff-8f61-... Learn more: https://entourage.tech

Positron is looking for co-founders.

∇ Full-stack Rust (Leptos & Axum)

∇ Based in Busan & Seoul

∇ Building a production finance model for open source: https://prizeforge.com

∇ Prototype works and tech is accelerating

You need to be prepared for the not-fun work of founding. Prototypes lurk in every corner. We know what engineering should look like and we do not complain when we are not looking at it. We just build. Founding can be extremely rewarding and I need to build out a team and put some equity into hands that will take care of it. Our mission is extremely important. We are making progress and will be growing. People with enough vision to commit to this train will be taken care of.

I am all for ample vacations and flexible hours. This company has the right shape to offer those things in the future. Right now, it's about grit and who wants a shot at doing something risky with a lot of payoff. If the market isn't going to give you the career advancement, high-risk opportunities, or compensation you want, you are welcome to try to make this your ticket as well as mine.

https://positron.com/careers

AI x Healthcare Startup | Boston, MA Onsite | Full-time | Early Engineer

We're looking for a backend-leaning fullstack dev. You will be one of the first engineers outside of the founding team. Here is a bit more about us:

We're a seed stage AI startup backed by several top tier VCs. We're on a mission to ensure patients get the coverage they deserve from their health insurance.

We’re building deep, vertically integrated technology systems to solve fundamental problems in US healthcare - the biggest market in the world ($5T). We use AWS, K8s, React, and Rust but there is no requirement to have prior experience with them specifically.

We are a founding team made up of ex-YC, Amazon, Meta, Microsoft, and Harvard Business School with previous successful exits. We have a 6+ month customer waitlist and growing insanely fast.

We're hiring our first engineer outside the founders. You'll work directly with customers to understand their needs, design the right solution, and build from zero to one. You'll own entire parts of the roadmap and tech stack while wearing multiple hats. Most important characteristics are resilience, work ethic, and curiosity. We care about slope, not where you are today.

This is an opportunity to work in an insanely fast paced, high ownership environment while solving real problems in healthcare. We're happy to share more details on the role in person/on zoom. Please fill out this form if interested!

https://wgwx7h7be0p.typeform.com/to/LV0t8OjI

Topos Institute | SWE/Senior SWE|Onsite Berkeley/Oxford |Rust/TS

https://topos.institute/contact/

We are a non-profit, independent research institute dedicated to shaping technology for public benefit. We use cutting-edge mathematical research, especially category theory, to develop new computational tools that enable cooperation across difference, with a core strategic focus on reinventing the practice of transdisciplinary scientific modeling.

We’re looking to hire our first full-time software engineer onto the US CatColab team. We are open to hires at both intermediate and senior levels. This is a unique opportunity to shape the design and implementation of an open source software system that draws on cutting-edge research to support collective inquiry for the public benefit.

DMI | Principal Full Stack Engineer | Munich, Germany | Full-time | ONSITE

DMI is a bootstrapped startup building the next-gen autonomy platform for defense & aerospace. Join us as Principal Full Stack Engineer to own and shape our product with the CTO.

You'll:

* Build high-performance frontends (Next.js, React, TypeScript)

* Integrate full-stack systems (FastAPI, Python, Rust)

* Optimize CI/CD and DevOps

* Mentor engineers and drive best practices

* Work directly with the CTO to shape product and technical strategy

You have:

* 5+ years building production software (3+ years frontend)

* Deep experience with our stack

* Strong DevOps/testing mindset

* Bonus: Real-time simulation, 3D/geospatial, or defense experience.

Why DMI?

* Product ownership, ESOP (employee stock option)

* A small, expert, high-impact team

* Great Munich office (simulator, BBQ, mountain views), mobility benefits, health and fitness benefits

Other software/ML roles open, just email me.

Interested?

Reach out directly to me (Pau): pgs(a)datamachineintelligence.eu

Windmill.dev (YC S22) | Software Engineers | Paris (ONSITE 3d/wk) | Full-time

Fastest open-source workflow engine built in Rust + Svelte. 300+ Enterprise customers. Profitable with a lean team of 9 engineers.

Looking for new cracked software engineers to join us in Paris.

https://www.ycombinator.com/companies/windmill/jobs

SerpApi | https://serpapi.com | Junior to Senior Fullstack Engineer multiple positions | Customer Success Engineer | Hiring Coordinator | Python/Ruby/PHP/Js/Rust/Cotlin/C#/Crystal/Nim/Elixir Developer Advocate positions | Based in Austin, TX but remote-first structure | Full-time | ONSITE or FULLY REMOTE | $150K - 180K a year 1099 for US or local avg + 20% for outside the US

SerpApi is the leading API to scrape and parse search engine results. We deeply support Google, Google Maps, Google Images, Bing, Baidu, and a lot more.

Our current stack is Ruby, Rails, MongoDB, and React.JS. We are looking for more Junior and Senior FullStack Engineers.

We have an awesome work environment: We are a remote first company (before Covid!). We do continuous integration, continuous deployments, code reviews, code pairings, profit sharing, and most of communication is async via GitHub.

We value super strongly transparency, do open books, have a public roadmap, and contribute to the EFF.

Apply at: https://serpapi.com/careers

Littlebird | Senior MLE + Senior Swift Engineers | Remote (global) | https://littlebird.ai/

Littlebird is working on a digital twin for Mac + Android to make anyone more productive, no matter what apps they use. Our team is well funded (~$5M+ seed) and remote-first, and passionate about building a product anyone can use. We're hiring developers with a passion for engineering-led cultures, knowledge graphs, search, contextual understanding, and designing infrastructure that can scale.

Core stack: Typescript, React, Swift, python, Postgres, AWS, some Rust

Apply here:

Senior Applied AI Engineer: https://scarlet-magician-747.notion.site/Senior-AI-ML-Engine...

Senior Swift Engineer: https://scarlet-magician-747.notion.site/Senior-Swift-Engine...

OCEANE | Quantitative Trader | Onsite | Abu Dhabi, UAE | Full-time | https://www.oceaneinvest.com/

OCEANE is a proprietary trading firm focused on ETFs and equities across GCC and global markets. We specialize in market making and quantitative strategies, powered by our in-house systems.

We're looking for a Quantitative Trader to join our Abu Dhabi team. You'll work closely with our engineers to develop, test, and execute intraday strategies across regional and international exchanges.

You should: Have 5+ years of experience in systematic or ETF trading. Comfort working in fast-paced environments with real capital. Understand market microstructure and trade execution dynamics. Have strong Python, C++, Rust skills for backtesting and prototyping. Want to be part of a small, ambitious team building from the ground up.

Please see the website for more details and contact info.

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

Chroma is the open-source search and retrieval database for AI applications. It's an open-source database with vector, regex, and full-text search. We support local, single-node, and cloud hosting. Help build the future of context engineering!

We're a team of 17, all engineers today. We work in Rust, Python, Typescript, and Go.

We're hiring for these areas:

- Head of operations

- Product design

- Production engineering

- Platform engineer (Rust)

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

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