KeyMe Locksmiths | IT Sysadmin | Remote | key.me

Fully automated self-service key duplicating kiosks can be found in over 7,000+ locations across the country in major retailers such as WalMart, Kroger, 7-Eleven, Menards, and many others.

We're hiring an IT Support Sysadmin to help manage and automate the hardware our employees use day to day, and the 7000+ kiosks we manage in the field. Linux, Windows, MacOS, SaltStack, Docker, AWS, with Terraform and Kubernetes.

Reach out to tim.mahoney@key.me and mention "IT Support Sysadmin" in the subject.

Steel | Applied AI Engineer + Infrastructure Engineer | Toronto, ON | ONSITE | $160k-$240k USD base + equity

Steel is open-source browser infrastructure for AI agents and apps. We make it easy for developers to ship products that interact with the web - without spending 80% of their time on browser pools, proxies, CAPTCHAs, and session state. In 2025 we grew 50x: 6,000+ GitHub stars, dozens of paying customers, millions of sessions served monthly. Dedicated chromium runs on Firecracker VMs for sub-second cold starts.

Stack: TypeScript, React/Next.js, Node.js, AWS, Firecracker, Postgres, Redis. 4+ YOE for both roles.

--- Applied AI Engineer ---

Shape how AI agents interact with the web. Build open-source frameworks/demos on the Sessions API, run experiments on which models/prompts/harnesses actually work, build evals against real scenarios, and work with customers shipping agents to production. AI-native full-stack engineers with strong product sense.

--- Infrastructure Engineer ---

Design and operate the systems Steel runs on. Sample projects: VM snapshotting that restores full browser state in under a second, performance-tuning the Sessions API from kernel traces, orchestrating millions of sessions with sub-second cold starts. Distributed-systems experience, strong AWS/GCP and Linux/OS fundamentals. Rust is a plus.

Public referral bonus: $10,000 if your intro becomes a hire.

Apply: email careers@steel.dev with GitHub & resume, mention HN.

ChainSecurity | Blockchain Security Engineer | Full-time | INTERNS , HYBRID/REMOTE, Zurich, Switzerland | VISA possible | https://chainsecurity.com/

ChainSecurity is a young and innovative cybersecurity company that operates in the blockchain and cryptocurrency space. Our mission is to make the blockchain space secure and trustworthy for people, companies, and governments alike. We are proud of our security experts from the renowned universities ETH Zurich, EPFL Lausanne and others.

We are trusted by 100+ blockchain companies and established corporations with security audits and services. We have secured complex systems for top blockchain clients, such as decentralized finance (DeFi) projects, and multinational organizations, such as banks and industrial consortia. A ChainSecurity Auditor will review the most complex blockchain projects to find vulnerabilities which no-one else can. By using state of the art tools, expert knowledge and a deep understanding of the fundamentals, we secure projects handling billions, often forming the foundation in the new paradigm of an open financial system.

Your Responsibilities:

* Work directly with the developers of the most successful teams in the blockchain industry to audit their code and secure their products

* Contribute to our security tools and create new ones in collaboration with our internal research team

* Conduct security research and publish your findings

Requirements:

* Strong background in software engineering, focused on security relevant areas and most importantly being able to reason about complex code

* Experience with penetration testing, vulnerability scanning, threat modeling or similar is a plus

* Good knowledge of cryptography

* Proficiency with Linux and Git

* Good written communication skills

* Fluent in OOP programming language

Bonus Points:

* Formal Verification, White Box, Vulnerability Scanning

* Solid Blockchain Knowledge

* Consensus Algorithms

Join us here: https://www.chainsecurity.com/jobs/blockchain-security-engin...

Questions about the role? Contact: jobs@chainsecurity.com

Amodo Design (https://amododesign.com/) | Sheffield, UK | Software Engineer | 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

Dablam | BDR engineer | Remote or on-site in NYC or London, UK| full-time or part-time

Dablam is a reputation management company that works with top companies to shape their communication, product stories and their impact in the real world. We work with product companies, brands and campaigns for product launches.

We're looking to hire an senior developer specialized in BDR and top of the funnel outreach automation through etl pipelines, openclaw, AI agents, clay and pure software engineering. ML and data science are required as we seek to detect signal in very noisy datasets. We generate our own leads today. We seek to employ an engineer that can own the pipeline stability and the results it produces. This is an engineering role. Experience in lead-gen matters but it's not mandatory.

* 2-4 years experience in software development; * Typescript, javascript, python, bash, linux; * familiarity with AI agents, ML and scikit-learn;

Reach out to me directly with your CV and victor that works at dablam.co.uk.

Location: US Northeast / Greater Boston Remote: Yes, Remote preferred Willing to relocate: For the right fit, NYC or Europe.

https://drive.google.com/file/d/1iRTOzJ6X3dVCkaiIBAsFfT_Ydcn...

Email: luchenbrendan@gmail.com

Known for refactoring ruthlessly, hunting root causes, and fighting for the users often while talking with my hands.

Technologies: Are listed on my resume and gravitate around fullstack. To get past bad filters, I enumerate JavaScript TypeScript React Next.js Node.js Python Tailwind Linux Java Kotlin Android React Native Docker Git PostgreSQL GenAI AgentAI and Supabase.

Seeking: Bonus points for work in Health, Education, or Environmental sectors. Full remote is ideal, but Hybrid 40% in the Boston metro is fair game, and if you are still reading, have a wonderful day and make a stranger smile.

Statement: Hire me for versatility as a polyglot agnostic builder of stuff, mentorship capacity to strengthen your whole team, bulletproof optimism in a fast-paced and uncertain world, a low-maintenance and well-behaved ego, and the occasional classy dad joke (no, I don't have kids).

MixRank (YC S11) | Software Engineers | 100% REMOTE (Global) | Full-Time MixRank processes petabytes of data every month from web crawling. We have hundreds of customers using our data products including Google, Amazon, Facebook, Intel, and Adobe, across industries including Finance, Recruiting, Sales, Marketing, and Security. We’re a fully-remote company with a global footprint in over 20 countries. We're growing, profitable, employee-owned, no dependence on outside funding. Applicants from all geographies and backgrounds are welcome. We are looking for passionate individuals for whom programming is not just a job but it’s something they love to do. We're obsessed with computers, programming, big data, databases, compilers, hardware, math, data science, and the internet. Does this sound like you? Please apply to join our team. Our code base is very friendly to new contributors. You'll have a fully-functional development environment within hours (fully automated) and be pushing commits on your first day. Deployments to production happen multiple times per day and finish in less than 2 minutes. Effectively all of our codebase is written in Python, Rust, SQL, Javascript/TypeScript, and Nix. The core technologies you'll need familiarity with to be productive are Python, PostgreSQL, Linux, and Git. We operate at a larger scale than typical startups. We operate two datacenters with high performance servers we've built that are capable of dealing with the volumes of data we process. We've implemented our own distributed file system. We do full-scale web crawls. We download and perform static analysis on the entire universe of Android APKs and iOS IPAs that are published. Unlike a typical startup where you'll spend half of your time in meetings, and the other half fixing bugs from Jira tickets— at MixRank you'll get to challenge yourself with difficult technical problems that will help you to grow as an individual.

We're hiring continuously for the positions below— they aren't singular positions that will close once filled. Our philosophy on hiring is that the candidate is more important than the position. For each new member of the team, we design a custom role and responsibilities that are specialized to their interests. Other companies will come up with a long list of specific requirements for a position with the expectation that you'll exactly replace someone from the team, or that you'll be the perfect tetris piece that satisfies the job requirements decided by a committee. MixRank is more pragmatic: we'll first get excited about having a unique individual on the team, then we'll figure out the best way to accommodate their specific talents.

-- Junior Software Engineer - Remote (Global), Full-Time

We're looking for remote junior engineers that have 0-3 years of professional experience in software, and 5+ years of curiosity exploring computers, programming, and technical hobby projects. This is an open-ended entry role with mentorship and diverse opportunities to work on all areas of our product: databases, distributed systems, infrastructure and tooling, data analysis, machine learning, frontend/backend web development, APIs, data mining, data modeling, and more. To stand out, please highlight what makes you unique: passion for computing, curiosity and side projects, work ethic, niche research, etc.

Ideally you've already graduated, but if you still have one or more years left of school, please feel free to apply anyway, and if you're the right fit for the team we'll figure out a way to accommodate your schedule. https://www.ycombinator.com/companies/mixrank/jobs/Fnwsojk-j... --

Software Engineer - Remote (Global), Full-Time

We're hiring generalist software engineers to work on web applications, data mining, machine learning/data science, data transformation/ETL, data modeling, database scaling, infrastructure, devops, and more. We'll cater the role to whatever subset of these areas match your interests.

Beneficial experience includes PostgreSQL, Python, Rust, Linux, TypeScript, Nix, frontend/backend web development, and data mining.

https://www.ycombinator.com/companies/mixrank/jobs/RXQspen-s...

--

I’m Kiran, Chief of Staff (CoS) at MixRank, a fully remote data startup building go-to-market intelligence. We’re US-incorporated but hire globally, and we’re bringing on new teammates to join a fast-moving team with real ownership and impact.

General Fusion | Senior HPC System Administrator | Richmond, BC, Canada | ONSITE or HYBRID (3 days/week) | Full-Time | $126k-$154k CAD | Immigration support for US candidates

General Fusion is a fusion energy startup (est. 2002) operating a fusion demonstration machine (LM26) at our Richmond, BC labs. We're hiring an HPC Admin to manage and evolve our Rocky Linux cluster (70 nodes, 1PB storage, SLURM) and help shape our broader research data infrastructure, bridging simulation and experimental data systems.

Stack: Rocky Linux, SLURM, InfiniBand, Apptainer, Prometheus/Grafana, HDF5/Parquet, DVC/LakeFS, ClickHouse/DuckDB, MongoDB

Requirements: 5+ years in scientific/HPC computing, 2+ years managing HPC clusters, strong Linux sysadmin background.

Apply here: https://workforcenow.adp.com/mascsr/default/mdf/recruitment/...

yeet | Chicago, IL / Remote | Full-Time

Building a dynamic runtime on top of the Linux BPF sub-system. Looking for extremely talented / passionate Rust developers / Backend Engineers with a deep interest in Linux internals, Distributed Systems, Dev Tools, Great Developer Experiences and Systems programming.

Experience working with distributed systems AND / OR writing highly-concurrent, performant multi-threaded Rust is a must.

Feel free to tell us all about your favorite GNU core utilities / Linux system calls / kernel sub-systems at: work [at] yeet.cx

You can visit us at https://yeet.cx/

Or try our interactive sandbox at https://yeet.cx/play

For more jobs check out https://yeet.cx/careers

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.

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

Cloudpepper | Senior Platform / DevOps Engineer | Remote (CET overlap) or Brussels | Full-time | $150k–$180k | https://cloudpepper.io/careers/platform-engineer/

We run the platform behind 10,000+ Odoo instances and we're looking for a Senior Platform / DevOps Engineer to join us.

Stack: Symfony/PHP, Ansible, Linux, PostgreSQL, Nginx, Python.

This is a senior role that spans both sides of the platform: backend work in Symfony/PHP, and ownership of the Linux + Ansible automation underneath. You'll be the person making sure the whole thing keeps humming as we scale.

We're a small team with high ownership and very little bureaucracy — if you like shipping over slide decks, you'll fit in.

Remote is fine as long as you can overlap with CET, or you're welcome to join us in Brussels.

Full role and application: https://cloudpepper.io/careers/platform-engineer/

MongoDB | Senior/Staff/Lead Site Reliability Engineers (SRE) and Infra SWE, Multiple Teams | REMOTE (US) or HYBRID (NYC, Dublin) | Full-Time

We are looking for experienced Site Reliability Engineers and Infrastructure Software Engineers to help build, scale, and secure the foundation of MongoDB Atlas, our globally distributed, multi-cloud database platform running across AWS, GCP, and Azure.

SRE at MongoDB is a builder role. We are heavily focused on making the platform more scalable, resilient, secure and self-service.

We have open roles (Senior, Staff, Lead) across several of our core Infrastructure teams:

- Infrastructure Security (InfraSec): Building infrastructure security controls and security observability tooling leveraging eBPF and Linux security mechanisms.

- Fabric: Building out service mesh, networking, and internal traffic routing.

- Storage Layer Services: Building our next-generation disaggregated storage architectures.

- Fleet Management & Deployments: Automating the lifecycle, deployments, and control planes of massive multi-cloud Kubernetes clusters.

- Atlas Infrastructure: Building core infrastructure operations on hundreds of thousands of Linux servers.

We're looking for engineers with a strong systems mindset who have:

- 5+ years of experience in SWE, SRE, or similar roles.

- Proficiency in at least one programming language: Golang, Rust, Python, C/C++ etc.

- Deep understanding of Linux internals, networking, distributed systems, and/or Kubernetes.

- Familiarity with at least one major cloud provider (AWS, GCP, or Azure).

- A builder's mentality: you think about failure modes, observability, and operability alongside correctness.

For any questions, or to apply directly (please mention HN) email: hani.benhabiles+hn@mongodb.com

You can view our open roles at: https://www.mongodb.com/careers/jobs

Senior Software Engineer (Python) Newport Beach, CA (hyrbid)| Full Time

https://www.researchaffiliates.com/about-us/careers/software...

WHAT WE’RE LOOKING FOR: We seek experienced and versatile Python engineers passionate about creating efficient, lightweight, and robust code. As part of a small team you will collaborate with researchers and other investment professionals to transform ideas into production systems. This role involves maintaining code, developing software libraries, and managing cloud-based resources. To excel, we expect a strong understanding of Python’s internals, including memory management and data structure performance characteristics. Extensive experience with the standard library, including modules like itertools and functools, along with advanced language features such as decorators, generators, and type annotations, is essential. We embrace modern development approaches such as test-driven development, peer review, and continuous integration and improvement. Team members actively engage in all stages of the development process, from planning to completion. Our firm values curiosity, authenticity, responsibility, and collaboration. We encourage open feedback, diverse opinions, and shared responsibility for maintaining a high-quality code. Our success is measured by team productivity, not individual output. We respect and support each other’s growth.

WHAT YOU’LL BE DOING: • Collaborate with teams of software engineers and finance professionals to develop, optimize, and maintain code. • Implement rigorous testing practices, adopt continuous integration and continuous deployment, and ensure high standards in code quality. • Conduct and participate in code reviews, pull-requests, and professional development activities to stay current in relevant domains. • Develop software on Linux environments and deploy in AWS. • Contribute positively to team and firm culture by embracing our core values.

MINIMUM REQUIREMENTS: • A bachelor's degree or higher in Computer Science or a related field. • At least three years professional experience using Python. • Fundamental knowledge of core computer science concepts, including algorithms, data structures, performance characteristics.

HIGHLY DESIRABLE: • Experience with Linux and command-line environment. • Experience with cloud environments and infrastructure as code tools. • Familiarity with NumPy and dataframe libraries. • Experience in other programming languages such as TypeScript, Rust, or C. • Knowledge of quantitative finance and/or financial data.

Please submit resume and cover letter to humancapital@rallc.com and say you are from Hacker News Who's Hiring.

Fastly | Software Engineers (Senior, Staff, Principal) | REMOTE (US, UK, EU) or ONSITE | Full-time

When you look at the headers of major websites, you’ll see us. If it has to be performant, secure, scaled worldwide, and always-on, it uses Fastly.

We're a globally edge cloud platform for performance and security, emphasizing open standards, sustainable engineering, and resilience-by-design. We're hiring across compute, security, platform engineering, network and edge protocols, release engineering, network architecture, client services engineering, and more.

Rather than building walled gardens, we co-founded the Bytecode Alliance, heavily upstream our work to open standards, actively author IETF drafts, and power the global infrastructure for open-source Python, Rust, Ruby, OpenStreetMap, and much more.

* The Stack: Rust, C/C++, Go, Javascript, Typescript, WebAssembly (Wasm/WASI), Wasmtime, Cranelift, eBPF/XDP, QUIC, HTTP, TLS, TCP, Varnish/VCL, Linux kernel internals, distributed systems, professional services.

* Apply: https://www.fastly.com/about/careers

Two Six Technologies | Technical Lead, Principal, and Senior Principal Vulnerability Researcher | Arlington, VA | ONSITE | Full Time | https://job-boards.greenhouse.io/twosixtechnologies/jobs/589... Two Six Technologies is seeking highly experienced Technical Leads, Principals, and Senior Principal Vulnerability Researchers to drive our in-depth reverse engineering and exploit development efforts. In these advanced roles, you will own the technical direction of critical projects and transition research findings into operational capabilities. We are looking for elite embedded security researchers to tackle complex challenges in firmware and hardware reverse engineering, as well as Linux/UNIX kernel development. You should have a strong track record of technical leadership or principal-level contributions, along with a preference for an active TS clearance and the ability to obtain SCI at a minimum.

If you are interested in pushing the boundaries of vulnerability research and embedded security, please apply via the link above or reach out directly to our team at recruiting@twosixtech.com.

Burnin (London or NYC) | Founding Research Scientist + Founding Engineering Lead | Hybrid (Some on-site) | Full-time

We are building the trust stack for AI code generation, targeted at high-stakes computing where wrong numbers cost real money: a statically typed functional language designed for coding models, a compiler whose guarantees double as audit-grade trust infrastructure, and a coding model fine-tuned on the language with compiler fitness as the training signal. Language and model are co-designed.

Small team out of PyTorch, FAIR, and Meta. Strong institutional VC support from our pre-seed; active investor interest heading into seed.

Founding Research Scientist: own the agenda across the language and the model. Type system design, compiler analyses that produce useful fitness gradients, and fine-tuning open-weight coding models on a language with no pretraining footprint. Publish in PL and ML venues. Strongest fits cross between machine learning, programming languages, and formal methods. PhD preferred, equivalent output equally fine. Stack is Rust, Lean 4, Python.

Founding Engineering Lead: own engineering across compiler internals, language runtime, GPU backends, notebook and library tooling, and the AI infrastructure around training, evaluation, model release, and likely public inference. We already support x86 and ARM, CUDA and AMD, macOS and Linux, and the matrix grows. Real feel for statically typed functional programming expected; the kind of engineer who picks up Lean or Haskell on a weekend because they wanted to. Have led engineering before, formally or not. Stack is mostly Rust with Python where it earns its place, primarily on AWS.

Both roles: comfortable with early-stage ambiguity, define your own roadmap, defend it with evidence.

Apply: RS: https://wellfound.com/l/2Carrr Eng Lead: https://wellfound.com/l/2CewDC

Socials: YT: https://www.youtube.com/channel/UC4DLS_emqwKXO7A9qaOtxlw SS: https://burninai.substack.com/

Loophole Labs | Senior Systems Engineer | REMOTE (Americas & Europe) | $150k–195k USD + equity | Go, Zig, Rust, C, eBPF, CRIU, Kubernetes

We make Architect: a Kubernetes runtime that hibernates idle pods in place and wakes them in 50ms with TCP connections intact. Five engineers. You'd be the 6th.

If tracing an x86 instruction in the morning and hunting a control-plane race in the afternoon both sound fun, and you insist on measuring rather than guessing, this is the job.

Customers run Architect for workloads where cold starts hurt: real-time voice & video AI agents, long-warming JVM apps, stateful data services that can't be rescheduled cheaply. 1.0 shipped Q1 2026; you'd join mid-way through 2.0. Seed-stage, VC-funded, a few years of runway. Fully distributed across the Americas and Europe.

What you'd work on:

- Hibernation surface: containerd shims and CRUISE, our Zig-native CRIU replacement.

- Control plane: per-node DaemonSet streaming checkpoints; admission controller resizing hibernated pods in place.

- Networking and migration: eBPF/XDP at line rate; cross-node live migration to production; cross-cloud next.

You're a senior generalist. Years across the stack: assembly to frontends, hardware-near, comfortable in x86. Tests ship with the code, decisions get worked out in writing, and you measure rather than guess. Strong in Go; willing to use Zig, Rust, or C.

Bonus: eBPF/XDP, CRIU, Linux kernel internals, containerd, gVisor, live migration, or public writing in kernel/container/eBPF land. Strong systems depth and the willingness to pick up the rest is enough on its own.

Apply: https://loopholelabs.io/careers - we respond within the week (typically a few days).

INDATA | AI Development Associate | REMOTE (US) or San Diego | FULL-TIME | $95,000–$115,000

We're hiring a junior dev who is genuinely AI-native — your primary tool is Claude Code or Cursor, not your own typing. You'll extend our agentic AI copilot embedded in Architect AI, our portfolio-management web app: text-to-SQL over financial schemas (holdings, transactions, performance), RAG over our internal docs, action tools, deploy and operate the system on Linux + Docker.

Stack: Python/FastAPI, LangGraph, LangSmith, React/TS, SQL Server, Qdrant, Redis, Anthropic + OpenAI + Azure AI.

Required: real SQL chops, ability to read Python and judge AI-generated code, a public project we can look at where you actually used Claude Code / Cursor / Copilot to ship something. 0–2 years professional experience. Recent grads welcome. You'll report directly to the Director of PM who built the system.

Apply: https://forms.microsoft.com/Pages/ResponsePage.aspx?id=-HA4S...

(5-min pre-screen form, includes a quick SQL question — please don't skip it)