Fold | Remote (US Only) | Senior Back End Engineer | Full-time

Fold is a publicly listed bitcoin financial services company building the tools people need to earn, buy, sell and live on Bitcoin. We're looking for a Senior BE Engineer to help build the financial infrastructure behind our products - payment processing, ledger systems, card transaction flows and event-driven pipelines.

  - 5+ years software engineering experience
  - Strong in: Java or similar (Kotlin, Scala, C#)
  - Experience with: production microservices, distributed systems
  - Familiar with: messaging/event streaming (Kafka, Pulsar)
  - Solid relational database and data modeling skills
  - Nice-to-have: fintech, payments, ledger/accounting domains
  - Nice-to-have: event-driven architectures, CQRS, event sourcing
  - Nice-to-have: Micronaut, Quarkus or similar modern Java frameworks
  - US residency (regulatory requirement)

Benefits: - Competitive salary + equity - 401k with 3% match - Unlimited PTO + yearly vacation stipend - Full health/dental/vision - Paid parental leave - Regular team meetups - Bitcoin starter pack (hw wallet included)

Email tiffany.sawhney (a) foldapp.com if you have questions or apply here: https://ats.rippling.com/fold-inc/jobs/514ba20e-a93e-4960-ad... [0] https://foldapp.com

Wand | Senior Windows C++ Engineer | REMOTE (US Eastern timezone overlap required) | Full-time

Wand (40M+ gamers) builds the augmentation and intelligence layer for PC gaming — real-time game-state reading powering a unified ecosystem across desktop, web, and native in-game overlays. Contextual help, interactive maps, and video clipping delivered exactly when a player needs it, without alt-tabbing out of the game.

We're hiring a senior IC to own meaningful parts of the native infrastructure underneath all of that. This is platform-team work at the seam between Windows, third-party game engines, and our product. You'll make architecture calls the rest of engineering lives with for years, and you'll measure success by what other teams shipped on top of your foundation — not by what you personally wrote. Recently shipped: a plugin system for safe in-process extensions; current work includes a Lua scripting layer on top of it.

What we're looking for: - 7+ years C++, meaningful time on tools/engines/platform systems where your users were other engineers - Deep Windows native: Win32/64, DLL lifecycles, hooking, IPC, process/thread management, WinDbg/Process Monitor - Strong concurrent programming — you spot races and ordering bugs in review without a checklist - Plugin/extensibility experience: you've designed an interface someone else built on, and lived with the result - Outcome-oriented, low-ego

Bonus: Unreal/Unity internals, full-stack TS/Electron down to C++, scripting/SDK layer (Lua/AngelScript/DSL), OBS or video capture internals, gRPC/Protobuf/FlatBuffers.

Fully remote, competitive comp + equity.

Apply: https://jobs.ashbyhq.com/wand?utm_source=kY1r05Q4Go

Enveritas (YC S18, non-profit) | Backend Software Engineer | Remote (Global) | https://enveritas.org/jobs/ Enveritas is a 501(c)(3) nonprofit working on sustainability issues facing smallholder coffee farmers. We collect field data in 25+ countries and build systems for analyzing risks in coffee supply chains (including EUDR-related deforestation checks).

* Backend Software Engineer (Python, PostgreSQL/PostGIS, Docker, AWS, Terraform) - $135-$155k — https://enveritas.org/jobs/backend-software-eng/#10d7adef8us (worldwide remote)

Husense | https://husense.io | Radar AI Engineer | The Hague, NL | ONSITE (80%, 1 flexible day/week) | Full-time

We build radar + ML for smart cities, sports analytics, smart buildings, and defense perception. Our sensors see what cameras can't — 24/7, through walls/weather/crowds, with no faces and no audio. Customers include the Dutch police, Gemeente Den Haag, Gemeente Amsterdam, KLM, Koninklijke Marechaussee. TU Delft partner.

Hiring our first Radar AI Engineer to own the full pipeline end-to-end: raw FMCW/MIMO signal in, deployed embedded model out (ONNX, TensorRT, edge TPUs). Real hardware. Real customers. Privacy-first by design.

Looking for: MSc/PhD in ML / EE / signal processing; strong PyTorch + Python; embedded deployment experience; Rust or C/C++ a plus. EU-based or NL-visa-eligible (we sponsor highly-skilled-migrant + 30%-ruling for the right person).

Process: first call in 5 days, decision in 3 weeks. Founder-led, no multi-month limbo.

Apply: https://husense.odoo.com/jobs/radar-ai-engineer-6 or email radar-ai-engineer@mail.husense.io with the one project you're proudest of.

Elucid | Principal Platform Engineer | Boston, MA | ONSITE (hybrid) | $170k–$205k | https://elucid.applytojob.com/apply/BHpChxSggM/Principal-Pla...

Elucid builds FDA-cleared AI software that analyzes cardiac CT scans to characterize plaque and predict heart attack and stroke risk. The world's best cardiologists use our output to make treatment decisions for real patients. As such, our platform is regulated as a Software as a Medical Device (SaMD) product by the FDA and we operate under HIPAA, ISO 13485, and ISO 27001.

We're hiring a Principal Platform Engineer to own our cloud infrastructure and developer platform: AWS, containers, Terraform, CI/CD, observability, and the self-service tooling that lets our application teams ship quickly inside a regulated SDLC.

We are looking for: 7+ years in DevOps/SRE/platform roles, deep AWS, strong IaC, comfort with containers (ECS/Fargate, Kubernetes), and one language you reach for when building tooling (Python, Go, Rust, Ruby, C++). Healthcare or regulated-industry experience is a plus, but not a requirement.

On-call is a shared rotation, roughly 2–3 weeks per quarter, business-day coverage only (9am–midnight ET, no overnights).

Apply at the link above.

ClickHouse | Distributed Data Infrastructure Engineer | Remote Hiring in the US right now. Seniors/Staff/Principal levels

ClickHouse is a popular, Open-Source OLAP Database. We are ClickHouse Inc, the company behind the database aiming to build the best in class real time data warehouse.

What we are looking for:

Distributed Systems / Cloud Engineers to build

    - AutoScaling Systems for a Cloud Database

    - A Distributed Caching Layer on top of S3 [0]

If you have experience in productionizing and maintaining distributed systems cloud-based multi-tenant caches - you would fit right in.

We also maintain our own ClickHouse based Data Infrastructure. Bonus points if you've worked on auto-scaling or other data-driven forecasting challenges in the past.

    Can work in a fast moving scale-up environment. Proactive and hands on.

    You must be independent and self-organized.

    Database SRE / Cache Operations experience

    Go, Kubernetes, Distributed Systems in general

    You will need to be able to do On-Call - debugging production infra, db or cache issues

    Low-level database programming (C++, ClickHouse) - This is crucial for the cache.

If you want to work on operating production critical databases/caches in the cloud on or write data-driven algorithms for autoscaling, consider applying! Send me an email: manish.gill [at] clickhouse [dot] com

[0] https://clickhouse.com/blog/building-a-distributed-cache-for...

MWI Animal Health | Remote (US only) | Senior .NET Developer

MWI Animal Health is a leading U.S. distributor of animal health products, medications, and technology solutions for veterinarians and livestock producers.

What you'll do:

- Design, build, and maintain full-stack .NET applications using C#, ASP.NET Core, React - Develop scalable backend services, integration layers, and data access patterns optimized for performance and maintainability - Build and evolve solutions across new and existing products, demonstrating the flexibility to context-switch, learn new domains quickly, and deliver value in ambiguous or fast-changing environments.

What we're looking for:

- 7+ years of professional full-stack software engineering experience with strong emphasis on the .NET ecosystem

Nice to haves:

- Hands-on experience with DevOps tooling and practices (AWS, GitHub Actions, Terraform, Docker, Kubernetes, or similar). - Practical knowledge of application security principles and experience embedding security into the development lifecycle. - Experience with development related to payment processing.

Reach me at ashelmire [at] mwiah [dot] com

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 4 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, but we are super flexible overall, it will be hands down one of the best work environments you can get. Pay is competitive, 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, full-stack, and hardware. AI policy across all roles: you should be able to do the work without AI, and much faster with it.

Android Systems Engineer (AOSP/BSP) - 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.

Full-Stack Engineer (Apps + Backend + ML) - Everything at the platform layer. Generalist who ships end-to-end. Skill check: can build a crude-but-working facial recognition system (camera → model → DB → backend). (using existing facial recog models) Bonus for weird/constrained hardware work or running ML on edge devices. Stack: Android, Java, Python, TypeScript. _Filter: send the most useful thing you've built and used (no CRUD slop). Even better if you still use it for yourself.

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. Thanks for your time!

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

Beacon AI | San Carlos, CA | Hybrid (On-Site) | Full-Time | www.beaconai.co

Beacon AI builds intelligent systems that make aviation safer and more autonomous. We’ve completed multiple DoD programs and are expanding our team with exceptional technical leaders to push the boundaries of human-machine collaboration in the cockpit. At Beacon, you will lead by example, mentoring and growing a small team of talented engineers (typically 1–2 to start) while staying hands-on in design and execution. You’ll help shape critical systems that advance aviation safety and autonomy, working alongside a team that values effort, creativity, and accountability.

We’re hiring Lead Engineers with 5-9 YOE who love solving complex problems. At Beacon, you’ll own your work end-to-end, from prototype to deployment, and literally see your code take flight in real world aviation environments! Roles:

++ iOS Engineer [Tech Stack: Swift, SwiftUI, UIKit, Mapbox]

++ Senior Security Engineer [SIEM, IDS/IPS, vulnerability scanning, encryption]

++ Infra/Backend Engineer [Tech Stack: AWS]

++ WebApp/FrontEnd Engineer [Tech Stack: Python, Typescript, React]

++ Lead Autonomy/Robotics Engineer [Tech Stack: C++, Python, iOT]

Join us at beaconai.co/careers. Mention in the application that you saw our post on HN.

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/.

Sudowrite/H++ | Right Hand to the CEO | REMOTE (US) or Honolulu | 80-130K + equity + profit share

Hi, I'm Amit, co-founder of Sudowrite. Every other post in this thread is hiring someone to build software. I'm hiring someone to help build the company.

Our company is weird. No VCs, 30,000+ paying users, 3+ years of profitability, and the nicest coworkers you've ever worked with.

You should read the job listing even if you don't want the job b/c it is the best one here:

https://sudowrite.com/jobs/right-hand

Factory AI | AI, Fullstack, Frontend, Platform, Data, Product Engineers + GTM, Design, Operations | San Francisco, CA (+ NY, London for some roles) | ONSITE | Full-time | https://factory.ai

At Factory we build Droids, autonomous software development agents that review PRs, implement features, run tests, fix incidents, and handle migrations for enterprise engineering teams. Droid is model agnostic and surface agnostic, and works across your CLI, IDE, Web/Desktop app, CI/CD, Slack, and Linear. Customers include Nvidia, Adobe, Adyen, Klarna, and Ernst & Young.

We raised a $150M Series C at a $1.5B valuation, backed by Khosla Ventures, Sequoia, Blackstone, Insight Partners, NEA, and NVIDIA.

We're hiring across the stack:

- AI Engineer: agentic systems, LLM integrations, evals

- Fullstack Engineer: platform, APIs, auth, billing, terminal UIs

- Frontend Engineer: web and desktop apps (React, TypeScript, Electron)

- Platform Engineer: infrastructure, sandboxing, CI/CD, cloud

- Product Engineer: end-to-end feature ownership

- Data Engineer: pipelines, analytics, telemetry at scale

- Security Engineer / Research Engineer

Stack: TypeScript, React, Node.js/Bun, Python, GCP/AWS, Firestore, Electron.

We're also hiring in these roles: Enterprise & Mid-Market AEs, Solutions Engineers, Forward Deployed Engineers, Product Marketing, Product Manager, Product Designer, Partnerships, and Operations (RevOps, BizOps, People Ops, Recruiting). Some roles available in NYC and London.

In-office 5 days a week in SF (walking distance to Caltrain). Catered lunch and dinner, full medical/dental/vision, 401(k).

If you have strong opinions about how AI should actually work for production engineering systems at enterprise scale: we want to talk.

Apply: https://factory.ai/careers

SalesJack | Toronto, ON, Canada | Hybrid | Full-time

SalesJack is a sales software platform (CRM + prospecting service) for independent businesses in the construction supply industry. Growing quickly and profitably; building out our engineering team in Canada. Stack: Next.js, Node, Postgres, BullMQ, Snowflake.

-- Implementation Engineer — C$120k–140k

Own the technical side of bringing new customers live: ERP integrations, product category mapping, data migration, on-site training, plus post-launch reports and custom integrations. You work directly with founders, engineers, and the dealers using the product. Looking for 2+ years in solutions/implementation/data engineering, strong SQL (Snowflake/Postgres), comfort with REST APIs (auth, pagination, rate limits), and interest in construction supply ERPs (BisTrack, DMSi Agility, ECI Spruce).

Apply: https://jobs.ashbyhq.com/salesjack/3ab994a1-00fa-4826-8069-7...

-- Senior Full Stack Engineer — C$180k–200k

Own major product surfaces end-to-end, from talking to customers and scoping through architecture, implementation, and iteration. No PM layer — engineers closest to the problem own the solution. Looking for 8–10 years full stack, deep React/Next.js, strong Node.js in production at scale, advanced Postgres (multi-tenant, query optimization), auth/RBAC in multi-tenant B2B, and BullMQ or similar (Sidekiq, SQS, Temporal). Real product instincts required.

Apply: https://jobs.ashbyhq.com/salesjack/7ba3df69-8edf-4496-9e12-9...

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

Alembic | SF (5 days onsite) | SRE • C++ AI • Backend Python • Data Engineering

We melted GPUs chasing Causal AI — now we run one of the world's fastest private supercomputers, the only non-Fortune 500 company on earth operating one. Patented causal math, proving what actually drives revenue for the world's best enterprises.

Hiring: SREs to run our supercomputer, C++ engineers for AI systems, data engineers for enterprise-scale pipelines, and backend Python engineers for the platform.

Customers: NVIDIA, Delta, Mars. $145M Series B. Hiring SREs, C++ AI, data, and backend Python engineers.

https://jobs.ashbyhq.com/alembic?utm_source=MdakPrrV82

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.

You could be a fit if:

- 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

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

CHEERS.FAN #1 | Founding Infrastructure Engineers | Bay Area / Remote

CHEERS.FAN #1 is an early-stage company exploring infrastructure challenges involving real-time coordination, distributed systems, and large-scale interactive experiences.

We are seeking founding engineers in three broad areas:

1. Distributed Systems & Platform Engineering

Building reliable, scalable systems involving distributed coordination, event-driven architectures, cloud infrastructure, networking, and high-concurrency platforms.

2. Real-Time Synchronization & Timing Systems

Building systems where timing, synchronization, low-latency communication, deterministic behavior, and real-time coordination matter.

3. Embedded & Edge Infrastructure Engineering

Building infrastructure that operates close to devices, networks, and the edge, including embedded systems, firmware, networking, and performance-sensitive environments.

Experience with technologies such as Go, Rust, C++, Kafka, Kubernetes, WebRTC, networking, streaming infrastructure, distributed coordination systems, embedded systems, or related technologies is valuable.

We are particularly interested in engineers who have built large-scale, reliable systems where timing, coordination, performance, and resilience matter.

If that sounds interesting, we'd welcome a conversation.

Eastman Russell Founder & CEO CHEERS.FAN #1

Contact: Eastman@VBCheers.com

Atom Computing | Senior Infrastructure Engineer, Senior Software Engineer, Principal Software Engineer, Software Engineering Manager | Boulder, CO (Hybrid) | Full-time

Atom Computing is building large-scale quantum computers using arrays of optically trapped neutral atoms. Learn more at https://atom-computing.com/news-resources/

Our software team works on distributed systems, cloud infrastructure, APIs, developer tooling, orchestration, observability, automation, and high-performance computing that power both research and commercial quantum systems. Quantum computing experience is not required.

Open roles:

- Senior Infrastructure Engineer — Cloud and on-prem infrastructure, developer platforms, observability, automation, and production reliability.

- Senior Software Engineer — Build the software stack behind our quantum computers, including APIs, orchestration, automation, data systems, and developer tooling.

- Software Engineering Manager — Lead a team building the software platform for Atom's quantum systems, spanning APIs, cloud services, researcher workflows, and system architecture.

- Principal Software Engineer — Architect backend services for quantum job orchestration, distributed systems, cloud infrastructure, and production-grade APIs.

STACK: Python, Rust, C++, Terraform, Azure, distributed systems, hybrid cloud infrastructure, and HPC.

Apply: https://jobs.lever.co/atomcomputing - Please mention HN in your application.