Prelude | Paris | ONSITE | Full-time

Send verification messages anywhere in the world with the best prices, top deliverability, and zero spam with Prelude - the SMS API powering your growth.

https://prelude.so/

With an ex-Zenly founding team and investment from Seedcamp and Singular, we've already grown to 50 people and signed with X, Sunday, BeReal and more.

Hiring across Engineering (Go, Rust, AWS). We also have a niche role for someone specialising in device fingerprinting where we can be more open minded on remote work or relocation. https://jobs.ashbyhq.com/prelude

Common Prefix – Software Engineers / Auditors / Support Engineers – Greece – Remote – Full-Time

Common Prefix is a science-first blockchain consulting company. Our vision is to make blockchains usable for mainstream users and everyday people – paying at the supermarket, remittances, moving money across borders, saving, investing – and solving the real problems of usability, scalability, and interoperability that come with it.

We're a 30-person team, half scientists (cryptographer PhDs, post-docs, and professors) from renowned universities, half engineers with long web2 experience. A lot of our field is broken and we're trying to make a small contribution in fixing it, by introducing provable security and proper engineering practices across the board.

What we're looking for: Software engineers who can solve problems, are smart, get things done, and enjoy working on the bleeding edge, learning about cryptography, and working from first-principles. Auditors who can write and read code, especially low-level cryptographic implementation code (zero knowledge verifiers, signature schemes, etc), consensus (PoW, PoS), or smart contracts (everything DeFi). Support engineers (junior to early-mid) who enjoy being on the front line of production support (monitor live systems, respond to partner/user issues, triage/debug, and escalate).

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

Open roles:

* Software Engineer, https://commonprefix.notion.site/sw-folk

* Auditor, https://commonprefix.notion.site/auditing-folk

* Support Engineer, https://commonprefix.notion.site/support-folk

We offer:

* $80,000–$160,000 / year cash

* Local from Athens, Greece, or remote, preferably in Europe

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

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

9 Mothers Defense | Robotics / Audio Engineers | Austin TX | Full-time | ONSITE

We're building AI-driven turrets that stop hostile drones - where robotics needs F1-level speed.

We're looking for smart, T-shaped teammates: people who are experts in one area but happy to jump in wherever needed. Our software team is small, so every member makes a real impact.

If you want to write motor control in Rust, optimize camera processing with custom CUDA kernels on Jetson, or rework a transformer-based tracker to handle small objects - you can do that here, and much more.

US persons only

https://jobs.ashbyhq.com/9-mothers

Hyperact | Rust Engineer | Remote, UK | 3m Contract | Outside IR35

We are a product transformation consultancy looking for a Rust contractor to support one of our clients with a short term project.

Rust, AWS, Serverless, DynamoDB, Web/API development.

UK based contractors, outside IR35 only please, must have right to work in the UK, however this is a fully remote role.

Fire your CV and interview availability to jacob[dot]clark[at]hyperact[dot]co[dot]uk

About us: https://www.hyperact.co.uk/

Mobasi | Founding Engineer | Austin, TX / Remote | $240k + Profit Sharing | https://mobasi.ai

Mobasi builds autonomous AI agents for digital forensics. Our software orchestrates 150+ forensic tools to help law enforcement turn days of manual evidence analysis into minutes, aiding in cases involving child exploitation, trafficking, and homicide. We are bootstrapped, profitable, and shipping fast.

We are looking for our first hire outside the three co-founders to own infrastructure, DevOps, and compliance. You will transition our build pipeline from manual updates to an automated delivery system scaling to thousands of agencies. You will manage infrastructure across AWS, GCP, Azure, and AI providers, while owning CJIS and SOC2 compliance.

Tech Stack: Rust, TypeScript, Python, Tauri, Next.js, Docker, Pulumi, Terraform.

We work as a small SWAT team. We are AI-native and expect you to use tools like Cursor and Claude to ship significantly faster. We do not have sprints or daily standups. Instead of lottery-ticket equity, we offer a high base salary and direct profit sharing.

Apply here: https://jobs.ashbyhq.com/mobasi/b385d2bb-d338-44cc-8728-f0eb...

Estuary | US-Based / Remote | Full-time – https://estuary.dev/

Estuary is a VC-backed, post–Series A startup powering right-time data replication and transform — from sub-second CDC replication to terabyte-scale OLAP data flows.

We’re open-source, developer-first, and focused on making data movement radically simpler across both our Platform and Applications layers.

We’re hiring for:

Senior & Staff Backend Engineers

5+ years backend experience; Go required, Rust a plus. Own core systems powering real-time data pipelines. Build complex API/database integrations, improve connector frameworks, and tackle deep challenges in performance, reliability, and developer experience.

Backend Engineer (Integrations) – 2–4 years of backend experience. Help expand and maintain our catalog of real-time data connectors to SaaS tools using Python. You’ll work closely with experienced engineers to build and optimize integrations with third-party systems, while deepening your skills in infrastructure and stream processing.

Solutions Engineer - Work with the founding team to help customers use Estuary effectively. Collaborate closely with engineering and product, shape how users integrate real-time data, and feed insights back into product development.

What we’re looking for: Engineers who care about building reliable, maintainable systems and enjoy working with complex APIs and data flows. We value curiosity, clear communication, and a willingness to learn.

Bonus points for experience with CDC tools, open source contributions, or fast-paced startups.

To apply: Email your resume to careers@estuary.dev

xAI | London, UK | ONSITE | Full-time | https://x.ai

Our London team is hiring two key roles:

Backend Engineer

Build and scale high-performance production systems powering grok.com and the xAI API. Strong Rust (or C++) required — distributed systems experience a big plus.

→ https://job-boards.greenhouse.io/xai/jobs/4991448007

Developer Experience Engineer

Make the xAI API the ultimate playground for builders and hackers. Craft world-class docs/examples/tools, and engage the dev community. Strong TypeScript full-stack + proven open-source/DevRel experience required.

→ https://job-boards.greenhouse.io/xai/jobs/4985451007

Small, high-ownership team. Competitive comp, meaningful equity, full benefits. Visa sponsorship available. High-agency builders excited about frontier AI — apply above!

CodSpeed | Multiple Positions | On-site (Paris) / Remote (Europe) | Full-time | https://codspeed.io

We’re building the continuous performance optimization platform. We help engineering teams catch performance regressions before they ship, with sub-1% measurement variance. We’re already trusted by teams at Cloudflare, Vercel, Mozilla, Pydantic, and Astral (Ruff, uv).

We’re a small, deeply technical team looking for engineers who want real ownership and the chance to ship end-to-end. Competitive salary, stock options, generous PTO.

Senior Systems Engineer: CPU simulation tooling, language runtime internals (CPython, V8), kernel I/O emulation. C/C++/Rust/Zig.

Senior Full-stack Engineer: React/Next.js, Node.js/TypeScript/GraphQL, GitHub/GitLab integrations, Rust data pipelines.

Senior/Lead AI Engineer: Agent layer, eval methodology, context pipelines, model selection. Python/FastAPI.

Graphic/UI Designer: Visual identity and product experience for a developer tool.

More details at https://careers.codspeed.io. Apply at careers@codspeed.io

AllSpice.io | Remote (US time zones) | Senior / Principal Engineers | Full-time

Think of github but for hardware design. (PCB and Schematics design). Our mission is to bring the same modern workflows that revolutionized software: version control, automation, and collaboration to the hardware world. We are also introducing AI to hardware design!

We work on:

• Parsing complex ECAD formats (Cadence, Altium, etc.).

• Schematic/PCB diffs (not just text).

• Hardware CI pipelines (BOM, DRC, PLM integrations).

• AI-assisted design reviews.

• Scaling a Git-based platform for non-software engineers.

Stack: Go, Python, Rust, Vue/TypeScript, Postgres, AWS, Docker, Terraform (Gitea-based core)

-----------------------------------

Open roles:

• Principal Engineer (Parsing)

• Senior Infra Engineer (Infra)

Looking for engineers who like deep systems problems and high ownership.

Apply: https://www.allspice.io/careers

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

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 AI (think GitHub + copilot 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:

Director of Infrastructure (Linux, Terraform, Docker, SOC 2) - Own our infrastructure stack, security posture, and compliance programs while building and leading a small, high-impact team. This is a hands-on leadership role (60/40 management to IC) requiring deep AWS and security expertise, experience working with legal counsel and enterprise customers, and the ability to hire and mentor as the team grows. https://www.allspice.io/careers?ashby_jid=88cf1665-04ab-4043...

Principal Software Engineer (Parsing, Rust) - build and optimize our Rust-based parsing engine that transforms opaque electronics design files into open, scriptable data. This role focuses on low-level binary parsing, data structure design, and performance optimization for ECAD file formats. https://www.allspice.io/careers?ashby_jid=c977db6e-d5ea-4424...

Head of Growth - Own and scale one AllSpice's enterprise demand & pipeline generation. https://www.allspice.io/careers?ashby_jid=b1ac9d68-2229-4005...

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

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

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

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

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

We're hiring for these areas:

- Account executive (founding)

- Database storage engineer

- Distributed systems engineer

- Platform engineer

- Product engineer

- Product designer

Learn more and apply here: https://www.trychroma.com/careers

Radar Labs | Software Engineers (SRE, data platform, backend, full-stack, mobile) | Remote (US), NYC | Full Time | https://radar.com

- Radar is the geo-location dev tool

- Doing 1B+ API calls per day

- Our main languages are Rust and TypeScript, we also use mobile and offline pipeline languages (Python, Scala, and Terraform).

- We're based in NYC with our HQ in Union Square and remote friendly (US)

Interesting things we're working on:

- HorizonDB, our Geospatial database written in Rust

- Precise indoor location more accurate than iOS and Android leveraging Ultra-Wideband, other mobile sensors and ML.

- Extracting raw map data from satellite maps and the web leveraging ML and AI

- Anomaly detection to identify spoofed locations

- Mobile infrastructure that automatically configures itself optimizing battery-life and location accuracy for different use-cases over time

- Multi-Region AWS K8s deployment, 99.99%+ availability

- Frontend tools to visualize and debug location data at scale

Check out our jobs page here: https://radar.com/jobs#jobs If you have any questions, feel free to reply here or you can e-mail me at tim@radar.com

Proton VPN (https://protonvpn.com/) | Senior Performance Engineer | Barcelona, Spain or Geneva, Switzerland | ONSITE

Proton VPN enables millions of people to connect securely and privately, even in places where the internet is restricted or unreliable. Delivering that experience means our service must perform flawlessly under highly variable, real-world conditions.

We are looking for a Senior Performance Engineer to lead our efforts in making Proton VPN the fastest, most resilient, and most reliable VPN service in the world.

You will define and drive the measurement, analysis, and optimization of Proton VPN’s end-to-end performance, across clients, platforms, and global infrastructure. You’ll help ensure that every connection is fast, stable, and private, regardless of where the user is or what network they’re on.

We're looking for candidates with experience in system-level development (e.g. C or C++ or Rust), and network engineering (experience working with UDP/TCP and VPN protocols).

Apply at: https://job-boards.eu.greenhouse.io/proton/jobs/4725157101 (see also: https://proton.me/careers)

Strobe | Senior Infrastructure & Data Integration Engineer | Brooklyn, NYC | ONSITE | Full-time

Strobe is building the world's largest power plant — not a single site, but a distributed fleet of buildings, batteries, EVs, and generators buying and selling power in real time across wholesale energy markets.

We need a software engineer to take ownership of our data integration and cloud infrastructure layer — the connective tissue between utilities, grid operators, OEM hardware, weather services, and our energy optimization engine.

What you'd own:

- Wholesale market integrations (NYISO, CAISO, ERCOT) — real-time pricing, capacity markets, demand response signals - OEM hardware integrations — API and data bridges to building equipment manufacturers for monitoring, control, and telemetry - Green Button Connect pipelines — ingesting interval consumption, billing, and meter data from utilities (ConEd, PG&E, SCE, etc.) via OAuth2 + ESPI - Weather and solar forecast data pipelines - Utility bill reproduction engine — modeling site economics before and after Strobe to forecast financial impact across dozens of rate structures. This simulation infrastructure is core to how we sell and deliver value. - Event-driven AWS infrastructure (Lambda, API Gateway, AppSync/GraphQL, EventBridge, IoT Core, TimeStream, Amplify, CloudWatch) - Terraform IaC — real module design, remote state, multi-workspace patterns - Observability and alerting on systems where downtime means missed market events and real dollars

Strong fit if you have:

- Deep AWS experience (IAM, Lambda, API Gateway, AppSync, EventBridge, TimeStream or similar TSDB) - Production Terraform (modules, remote state, multi-workspace patterns) - Extensive Python (pydantic for models, click for CLIs, boto3 for AWS, async pipelines) - Experience integrating messy third-party APIs at scale (utilities, government, energy, OEMs) - Comfort with on-call for systems that control physical hardware and move real money

Stack: monorepo (heavily AI-agent-optimized) / Python / TypeScript / Rust / Terraform / AWS.

Small team (<10), high ownership, no layers. 5 days/week onsite at Newlab, Brooklyn Navy Yard.

eric@strobepower.com (mention HN) — LinkedIn or resume (PDF preferred).

SpruceID (YC W21) | REMOTE (US-Based Preferred) | Full-Time | spruceid.com

Spruce lets users control their data across the web. Instead of users logging into platforms, we believe platforms should request to access data vaults controlled by users.

The demand for trusted digital ID is accelerating as AI deepfakes begin to destroy most of the ways we use to verify identity today. How private or secure is it to hold your driver's license or passport up to a webcam to get a bank account? Was it ever private or secure? Stable diffusion can break so much of this already. Society will need trusted digital IDs and credentials. Our mission is to allow them to be controlled by individuals, with safeguards to prevent descents into surveillance states and checkpoint societies.

We are the main implementers of category-defining initiatives such as the digital ID program for the California DMV, and the verifiable digital credentials program in Utah. We are private sector participants in NIST's National Cyber Security of Excellence initiative for privacy-preserving digital ID.

We are hiring skilled engineers who care about making a real impact in improving public services, digital autonomy, and user privacy for the world. We work closely with public sector agencies, and have high regard for public servants. We have a strong engineering and customer-oriented culture, and are not simply a SaaS product or AI wrapper. Our roles are not for the faint of heart: you will be expected to work hard and learn a lot in this role.

Our engineers are ambitious to get outcomes for our customers and their constituents. On any given day, they may write great Rust/C#/TypeScript, deal with mainframe dumps, read policy documents, respond to technical RFIs/RFPs, manage on-prem environments, implement new NFC + Bluetooth protocols in Swift/Kotlin, create CI/CD processes that enforce W3C accessibility guidelines and i18n requirements, rewrite lost specs from disassembled binaries, figure out stablecoin payments, and design new protections for public key infrastructure. It is a team effort, and people with T-shirt shaped skills are able to collaborate and learn a ton from each other every day.

We are interested in candidates who want to be proud of the meaningful impact they make for society, even if it takes time to get right. This is not the right job for someone who wants to "join a cool new AI startup" that implodes or exits in under a year.

See our roles here: https://jobs.lever.co/sprucesystems/

Zed Industries | North America, South America, Europe REMOTE | https://zed.dev/ Zed is a company for developers, by developers. All 3 of our founders have spent years in the trenches writing software and still do it almost every single day. We know the only way to build the world's best code editor is by equipping every single member of the team to do the best work of their career.

We've raised $42M to support our ultimate vision, a new way to collaborate on software, where conversations about code remain connected to the code itself, instead of being tied to aging snapshots or scattered across different tools. The first step was creating a high-quality editor to serve as the user interface. Now this new investment lets us expand to tackle the next phase of our plan. We're developing a new kind of operation-based version control that incrementally tracks the evolution of your code with edit-level granularity, and we're integrating it into Zed to make collaboration, both with agents and teammates, a first-class part of the coding experience.

Rust Engineer - https://zed.dev/jobs/rust-engineer

AI Rust Engineer - https://zed.dev/jobs/ai-engineer

Product Designer - https://zed.dev/jobs/product-designer

Nuance Labs | Multiple Engineering Roles | Seattle, WA | ONSITE | https://www.nuancelabs.ai

Nuance Labs is building the first "human foundation model" that understands and expresses human emotion in real-time across speech, facial expression, and body language. We are crossing the "uncanny valley" to create AI interactions that feel truly alive.

Our founding team comes from MIT, UW, and Oxford, with deep experience shipping AI products at Apple and Meta. We are a small, fast-moving team that values in-person collaboration in our Seattle HQ.

*We are looking for*:

Machine Learning Research Engineer: Bridge the gap between research and production. Optimize model inference (TensorRT, vLLM) and build petabyte-scale data pipelines (Ray, Dagster).

Machine Learning Infra Engineer: Own our GPU-backed serving stack, Kubernetes clusters, and orchestration layers.

Systems Engineer (Real-Time Engine): Build our core server-side runtime that synchronizes complex interaction state in real-time. High-concurrency, low-latency systems. Python/Asyncio today, transitioning to Rust.

*Why join*?

Massive ownership in a high-bar, research-heavy environment.

Work on the frontier of multimodal generative AI and real-time graphics.

Competitive equity and the chance to shape a company from the ground up.

Apply at https://www.nuancelabs.ai/careers and mention "hackernews" for how you heard about us.

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

OneChronos | Systems Engineers | NYC (HQ), London and Amsterdam | Flexible and Remote Work | Full-Time

We offer a strong engineering culture and are looking for software engineers to design and optimize high-performance trading systems that power our periodic auction matching infrastructure.

We build production systems in Rust and are seeking engineers with meaningful Rust, C++ or Java experience, particularly out of backend or systems-oriented environments.

This is a systems programming role focused on low-latency, high-throughput distributed computing. You’ll work across order and data workflows, auction execution, reliability, and performance optimization to ensure the platform is efficient, fault-tolerant, and capable of complex trade matching at scale.

We’re especially interested in engineers who:

Have built backend or systems-level software | Are passionate about performance, concurrency, and correctness | Are motivated by real-time, performance-sensitive systems | Have experience with compilers, static analysis, or language tooling (a strong plus)

CONTACT: careers@onechronos.com - please include “Systems Engineer | HN” in the subject line.

ADDITIONAL OPENINGS: https://www.onechronos.com/careers/

Foxglove | Software Engineers (Rust, Typescript) | SF, Remote (US, AU) | Full Time

Foxglove is a platform for robotics and autonomy teams to collect, analyze, and learn from the vast quantities of multimodal data required to build, train, deploy, and operate reliable robots.

- Sr. Software Engineer, Rust. SF or Remote (West Coast US, Australia): https://foxglove.dev/careers-single?ashby_jid=2c5bb4ed-c6d3-...

- Staff Software Engineer, Data Search and Curation. SF or Remote (US): https://foxglove.dev/careers-single?ashby_jid=10a3765a-8ffe-...

- New grads Data Search and Curation (Onsite SF): email jeff at foxglove.dev, mention HN in the subject

- other roles here: https://foxglove.dev/careers