Senior Python Backend Engineer | REMOTE (EMEA/APAC)

We’re looking for Python backend engineers to work on a trustless supercluster of performance-proofed GPU-enabled sandboxed docker container runners controlled by truly decentralized algorithms (not just PAXOS or RAFT).

Wow, that was a mouthful...

If you found it interesting, join Reef Technologies and tackle complex technical challenges like this on your own terms:

- Contribute from wherever you like, we are fully remote - Set your own time commitment, as long as it’s at least 30h per week - See how we work in our handbook: github.com/reef-technologies/handbook - Influence the way we operate through our Sociocracy 3.0 decision-making process

Salary on a B2B contract:

- 45-70 USD or 180-280 PLN per hour - Flexible work schedule (as measured with a time tracker) - We automatically adjust rates based on inflation twice a year

We're looking for someone with 5+ years of programming experience, including at least a year with Python (including opensource and significant personal projects).

So, what do you think? You don't even need a CV; just go to https://careers.reef.pl/?utm_source=hackernews and shoot a few quick commands to apply.

Contact: hiring@reef.pl Web: https://reef-technologies.com/

Piramidal | Senior Backend, Infra, Frontend Engineers | NYC onsite | Full-time

Piramidal is looking for senior software engineers - frontend, backend, and infra - who are excited about solving difficult problems at the boundary of foundational AI and neuroscience. We work on real-time monitoring of neurological data to help clinicians better treat their patients.

Our core backend and infra stack is Python, Go, and Terraform deployed to various cloud and on-prem, while our frontend stack is React and TypeScript. Bonus points for either: standing up and maintaining reliable streaming systems with a production/ops mindset; or building smooth, data-intensive React UIs with modern plotting/visualization libraries.

You would take an active role in architecture and design, implementation, and hiring from your early days, and will have the opportunity to have ownership commensurate to your capacity and interests.

Apply for jobs here: https://job-boards.greenhouse.io/piramidalinc

Puntt AI | SF Hybrid | Forward Deployed Engineers | Founding Sr. Applied AI Engineers | Salary: $180,000 - $210,000 USD + equity, benefits and unlimited PTO

One of our customers has thousands of packaging assets spread across dozens of markets, languages, regulations, and brand standards.

Every change needs to be reviewed before launch. Humans currently do most of that work.

We are automating it. The challenge isn't generating text. The challenge is building systems that can be wrong almost never.

We're looking for:

- Forward Deployed Engineers who enjoy sitting with customers, figuring out what's actually broken, and building solutions faster than a roadmap ever could.

- Applied AI Engineers who obsess over retrieval, evaluation, orchestration, reliability, and all the ways AI systems fail in production.

Small team. Real customers. Revenue. Lots of difficult edge cases.

Please reach out directly if interested: linkedin.com/in/christinakayler

Anyfin | Full-Stack, Backend (Go), Data Engineer | Stockholm, Sweden | ONSITE 3 days/week | Full-time | Relocation + visa sponsorship

What happens when you get a number wrong?

In most systems, you log an error and move on. At Anyfin, a wrong number is someone's loan application.

We're a profitable Swedish fintech that helps people refinance expensive consumer loans at better rates. Small team, regulated industry, which sounds like a recipe for slow, cautious engineering. It's the opposite. The regulation sets the floor, not the ceiling. Above that floor, we experiment, ship, break, learn, and ship again.

We're building real-time credit decisions using ML models on GKE, Go and Python on the decision layer, TypeScript/Node.js on the API, React on the frontend, BigQuery and dbt for data. Interesting stack, interesting problems, and because we're small, you're close to all of it.

Our co-founder Sven is back leading eng and hiring directly. No recruiter chain, no committee. Short feedback loops. Real ownership. No one to hide behind.

Roles: Senior Backend · Full-Stack · Cloud · Data Engineer

https://anyfin.info/hackernews

Flow Traders | Research Engineer | Hong Kong/ London (onsite) | Full Time | Visa | Relocation Flow Traders is a leading proprietary trading firm with an entrepreneurial and innovative Tech culture at the heart of its business. We are looking for Research Engineers in our Hong Kong office.

Join us build and scale the research framework behind our systematic trading models. You’ll work closely with Quantitative Researchers, drive end‑to‑end ML pipelines, and shape global standards for data‑driven model development. Research Engineers have joint responsibility for conducting research and delivering models.

You’ll thrive if you have: - 8+ years in ML / Data Science / Research Engineering (Postdoc/Faculty can count towards this); - Strong Python and libraries such as Ray, numpy, PyTorch, and pandas; - Solid math/stats background; - Experience with modern dev practices & cloud technologies.

If you're interested, apply here: https://lnkd.in/dWhh_m28

Or if you'd like to see other roles at Flow Traders, please check our careers website: https://flowtraders.com/careers/

LiveKit|http://livekit.io/| VoiceAI | webRTC | Remote | Full Time LiveKit is building the infrastructure layer for the voice-driven era of computing. Our platform gives developers everything they need to build, test, deploy, scale, and observe agents in production.

Hiring:

>> Staff Rust SDK Engineer: https://jobs.ashbyhq.com/livekit/a1d10340-7cd9-4029-9a56-139...

>> Staff Security Engineer: https://jobs.ashbyhq.com/livekit/efc06ff8-37c4-473e-8de8-bbb...

>> Sr Software Engineer, Agent Platform: https://jobs.ashbyhq.com/livekit/f152aa9f-981c-4661-99d3-683...

>> Developer Success Engineer: https://jobs.ashbyhq.com/livekit/fdff28df-2245-43c1-bb09-430...

>> Sr Software Engineer, Telephony: https://jobs.ashbyhq.com/livekit/d9a2f119-0c83-4b39-a7de-7d2...

Co-founders: Russ d'Sa (CEO/Cofounder) https://www.linkedin.com/in/russelldsa/ & David Zhao (CTO/Cofounder) https://www.linkedin.com/in/davidzhao/

Check out our blog: https://livekit.com/blog

Our other roles: https://livekit.io/careers?utm_source=1bpyr8q375

CO-Ver | Fullstack & Senior Fullstack SWE | Remote US | $125k-$175k DOE + Equity | 1099 Contract-to-Hire | Self-funded

GCs routinely overbill 10-15% on change orders, and owners have no systematic way to catch it. CO-Ver is building software to help owners and developers review, validate, and challenge construction change orders before they pay them.

The product combines document ingestion, scope/cost comparison, estimate review workflows, and LLM-assisted analysis with human estimators in the loop. MVP is nearing completion. We're targeting production by mid-July, self-funded, intentionally small, and working directly with customers in a painful, expensive, and underserved market. You'll work with the founders and fractional CTO, have a real voice in product and architecture decisions, and receive early-stage equity.

Open roles: Fullstack SWE ($125k-$155k): 3+ years, strong TypeScript, React/Next.js, solid data modeling, interest in LLM-assisted workflows

Senior Fullstack SWE ($150k-$175k): 5+ years, deep TypeScript, production Next.js/multi-tenant SaaS/LLM features, comfortable owning architecture decisions

Nice to have: Convex, Clerk, Tailwind v4, PDF pipelines, construction domain knowledge

Stack: Next.js · React 19 · TypeScript · Convex · Clerk · Tailwind v4 · Anthropic API · Vercel · GitHub Actions

Email recruiting@co-ver.com with [hn] in the subject. Thank you!

Otherling | Senior Full-Stack Software Engineer | Hybrid NYC or LA | Full Time

Otherling is a fashion e-commerce startup helping consumers discover emerging luxury brands. We're hiring a Senior Full-Stack Engineer to design, build, and maintain our platform end-to-end.

REQUIREMENTS - 4+ years in software development (CS degree or equivalent) - React, Next.js, Tailwind CSS - Python or Node.js - SQL/NoSQL/Postgres and data modeling - REST and/or GraphQL APIs - Docker and AWS (ECS, Cognito, S3, Lambda, RDS) - Shopify platform and API development - Plus: startup or luxury-fashion interest

APPLY Email otherling@vornoy.com, subject 'Otherling dev'. Include your resume and location (New York or Los Angeles).

Peachtree Infrastructure | Full Stack Dev, Data Engineer, Salesforce Admin/Dev | REMOTE (US) Series A renewable-energy developer (solar, storage, efficiency, grid services) building the software and data backbone for our energy assets. Small team, lots of ownership. Stack: Python/Flask, Node, Svelte, GCP (Cloud Run, BigQuery, Cloud SQL/AlloyDB), Salesforce. US (CO, GA a plus), full remote.

- Full Stack Dev (mid, 4-7 yrs) - $120k-$145k Features end-to-end across Python/Node + Svelte on GCP, SQL/Postgres, BigQuery, REST, Cloud Run

- Data Engineer / Data-focused Full Stack (5+ yrs) - $150k-$180k Own our IoT data platform: ingestion into BigQuery (batch + near-real-time), time-series modeling, operational Postgres, full stack interfaces. Strong BigQuery + SQL, ETL/ELT

- Salesforce Admin/Dev (mid) - $110k-$140k, Own org health + build real solutions (Flows, Apex, LWC, custom objects, integrations) for our deal lifecycle & project management, Platform Dev I a plus

W-2, full benefits, Apply: hiring@peachtreeinfra.com

Deep Core Technology | Founding Engineer | REMOTE (MUST LIVE IN CANADA) | Full Time | Salary: $105,000 - $125,000 CAD + equity

Company: We’re building a geologic modelling software, based on reasoning, to help mining and mineral exploration companies work faster. Our goal is to create a way to enable open-ended, interpretive geologic problem solving to be done programmatically, changing the way to explore for hard rock and critical minerals. Currently in active fundraising.

Role: You are the founding engineer on the team, joining co-founder (Neil, CEO) and myself (Jeff, CTO) as first employee. You’ll have a deep influence over systems and architecture. You will have ownership through the entire stack from the database, through geostatistical backend services, through 3D rendering on the client side.

Work rooted in agentic systems, so an understanding of the internals of things like Claude Code, and a broader understanding of orchestrating agents to complete complex discrete tasks is important.

You:

- Fluent in Typescript, Python, and framework/tooling agnostic (Currently using things like NextJS, Supabase, Cesium)

- Eager to learn about mining domain knowledge around the software.

- Ownership of the codebase, and the systems that support the software (project management, CI/CD, monitoring, etc.)

- Strong engineering fundamentals around architecture, systems and security.

- Open to doing a yearly month abroad with Neil and I. Last year, it was Oaxaca, Mexico.

Apply: Shoot me an email at jeff@deepcoretech.com with a resume, and a short blurb about yourself. If you include a 1 minute video/Loom, I'd love to see it. Must be eligible to work in Canada without a VISA requirement. We are located in Squamish, BC.

https://www.deepcoretech.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

Espresso AI | Staff ML, Staff Infra, FDE | Brooklyn or San Francisco | Full time We're using LLMs to build neural optimizers, neural scheduling systems, and neural workload tuners. (If you're ex-Google, you can think of it like Borg powered by LLMs.)

Today we use ML to make data warehouses and spark jobs more efficient. We're hiring staff ML engineers to train models that can understand how much compute a job needs, how it scales to larger machines, whether a machine can run more jobs, and so on; and staff infra engineers to take those models and deploy them on real-world production systems.

We're also looking for FDEs who can help us talk to users and run pilots. This is a pretty technical role (you need to be able to do data analysis and debug in prod) that's also user-facing - it should be a good fit for a former (or future) technical founder.

If this sounds cool, please email me: alexis [at] espresso [dot] ai

Trace Labs | Remote (USA) | Full Time | https://tracelabs.ai/ Want to join a lean, ambitious, and fast growing startup? Trace is building the data infrastructure for physical AI. Robotics and embodied AI are bottlenecked by real-world data. We’re building the platform that turns real-world human work into structured training datasets for robotics and foundation model labs. We’re hiring engineers to help build the core product from end to end. Small, senior team. Fully remote. Experienced founders with a successful exit. Clear communicators. High trust, high bar.

Open Roles

- Full Stack Engineer: https://jobs.ashbyhq.com/tracelabs/963005ce-f4f1-4d54-957d-1...

- Computer Vision Engineer: https://jobs.ashbyhq.com/tracelabs/774fbd47-20ce-4665-9bdb-5...

What We Offer

- Autonomy, impact, and ownership. As an early employee you’ll shape the product direction and company values.

- Competitive salary and significant equity in a fast growing, early stage startup.

- Remote employment - work where you want, when you want.

- Generous vacation policy - take time whenever you need to recharge. Building a lasting company is a marathon, not a sprint.

MindFort AI (YC X25) | Backend Software Engineer, AI Researcher | Los Angeles, CA | Full-Time

I'm a founding engineer at MindFort (https://www.mindfort.ai). We build autonomous AI security agents that pen test your software before attackers do: finding, exploiting, and patching vulnerabilities. Backed by YC, Soma Capital, etc.

- Software Engineer (Backend + AI) | $150k–$250k + Equity: Architect and scale our agent systems from scratch. Python, Postgres, Docker, K8s, LangChain/LangGraph. Cybersecurity background a plus but not needed.

- AI Researcher | $150k–$250k + equity: Own the research behind how our agents reason, plan, and chain exploits. LLM fine-tuning, RL, eval design, multi-agent systems. Security or red-teaming background a plus.

Both roles include founding-level equity, 100% health coverage and unlimited PTO.

More Info + Apply At: https://www.ycombinator.com/companies/mindfort

Location: India

Remote: Yes

Willing to relocate: Yes

Technologies: Python, Django, AWS (EC2, EKS, VPC), Docker, Kubernetes, GitHub Actions CI/CD, SQL

Résumé/CV: https://omtiwari.tech/resume.html | https://www.linkedin.com/in/tiwariom/ | https://github.com/omtiwari17

Email: work.om.tiwari@gmail.com

Recent 2026 Computer Science Graduate and Backend/Cloud Engineer focused on secure architecture and deployment automation.

* Cloud & CI/CD: Engineered GitHub Actions pipelines to deploy Dockerized apps to AWS EKS clusters with zero-downtime rolling updates.

* Backend Systems: Built secure Python/Django portals utilizing strict Role-Based Access Control (RBAC) to protect sensitive data workflows.

* Real-Time Data: Developed live analytics dashboards featuring smart API polling and custom algorithms for dynamic probability calculations.

* Certifications: AWS Academy Cloud Architecting & Foundations (AWS); DevOps Foundation, Generative AI, and Agentic AI (Datagami x NASSCOM x IBM).

Location: Indore / Noida, India

Remote: Yes

Willing to relocate: Yes

Technologies: Python, Django, AWS (EC2, S3, VPC, RDS), Docker, Kubernetes (EKS), GitHub Actions CI/CD, SQL

Portfolio: https://omtiwari.tech/resume.html

LinkedIn: https://www.linkedin.com/in/tiwariom/

GitHub: https://github.com/omtiwari17

Email: work.om.tiwari@gmail.com

Location: Croatia, Dubrovnik / Europe Remote: Yes, remote-first or fully remote only Willing to relocate: No, remote preferred Technologies: TypeScript, JavaScript, React, Next.js, Node.js, Express, PostgreSQL, Prisma, Supabase, MongoDB, REST APIs, Stripe, OAuth, JWT, Docker, Vercel, Jest, Vitest, Cypress, Tailwind CSS Résumé/CV: https://personal-website-tau-sandy.vercel.app/Resume.pdf Email: lazarbukejlovic@icloud.com

Full-Stack Engineer with 3+ years of experience building production-ready React/TypeScript systems for SaaS, fintech, AI workflow, and data-heavy products.

I’m strongest in frontend-focused full-stack work: polished React/Next.js product interfaces, dashboards, auth flows, protected routes, API integrations, database-backed features, Stripe billing, deployment, QA, and debugging the production issues behind the UI.

Recent projects include MindPad AI, Flowstate, AtlasBrief, GeoRisk, and EchoRoom. These are not basic portfolio clones — they include real auth, payments, persistence, AI-assisted workflows, dashboards, billing logic, team flows, and deployed production-style architecture.

I’m looking for remote Frontend Engineer, Full-Stack Engineer, React Engineer, or Software Engineer roles where I can own real product work end-to-end and contribute quickly.

APMHelp.com / PM-in-a-box.org || AI native growth marketer | Remote | Contract/Full-time/part-time

We're an outsourced accounting firm specializing in property management (appfolio, buildium, rentvine) that's building an open source ai harness/orchestrator for property managers.

$7M ARR, cash flow positive, looking to re-envision marketing/growth ai native.

email taylor at the apmhelp domain or comment and i'll reach out. =)

Catalyst·Wayfare AI | Lead AI Engineer + Agent Builder + Platform Engineer | Remote (US) | Full-time / Part-time / Contract | https://catalystwayfare.ai/careers

AI transformation firm shipping production AI systems for mid-market enterprises in regulated and technical domains — finance, energy, industrials, healthcare. We do not stop at PowerPoint AI strategy. We ship working systems alongside our clients' engineering teams. Small teams, deep expertise, real autonomy on real work.

Hiring:

[1] Lead AI Engineer, Agentic Systems — Embedded technical lead on a multi-agent orchestration build for one of the country's leading power engineering firms. Architect the engine; design the patterns we replicate at the next client. 6+ yrs eng, 2+ shipping LLM/agentic systems in production. Strong Python; opinions on agent frameworks. Monthly US travel to one major metro. https://catalystwayfare.ai/jd-lead

[2] AI Engineer, Agent Builder — Hands-on builder embedded on the same engagement. End-to-end ownership of individual capability agents — prompts, tools, retrieval, evals, monitoring. 3–5 yrs strong Python, real production LLM API experience, shipped at least one agent system end-to-end. 1099 contract, ~30–40 hrs/wk. Occasional US travel. https://catalystwayfare.ai/jd-builder

[3]Platform Manager (Engineering), Trust.ML — Founding platform engineer on our productized governance, evaluation, and deployment surface. Own the roadmap, write the code, set the operational posture (SLOs, on-call, audit). 5+ yrs, prior engineer-in-charge experience. Quarterly US travel. Compensation competitive with senior platform roles at venture-funded AI infrastructure companies; equity reflects the founding nature of the seat. https://catalystwayfare.ai/jd-platform

Stack: Claude + OpenAI + Gemini + Perplexity APIs in production, open-source models when the math points there. Cursor and Claude Code daily. Vercel, Neon, Sentry. Evals as first-class artifacts.

Apply: per each JD's instructions, to talent+hn@cwai.co. Short cover note matters more than a resume.

Coder | https://coder.com/ | Multiple roles | Multiple locations | Full-time

Coder is an AI software development company leading the future of autonomous coding. We empower teams to build software faster, more securely, and at scale through the collaboration of AI coding agents and human developers. Our mission is to make agentic AI a safe, trusted, and integral part of every software development lifecycle.

Coder’s self-hosted Agentic Development Environment (ADE) is the foundation for deploying agentic AI in the enterprise. It provides a secure, standardized, and governed workspace to deploy autonomous coding agents alongside human developers, accelerating innovation while maintaining control and compliance. Coder's isolated, policy-driven environments improve productivity, cut cloud costs, and reduce data risks. Developers transition to AI at their own pace using their own tools. Platform and security teams can govern, audit, and manage a great developer experience at scale.

Check out our OSS product with 100k+ stars on GitHub! https://github.com/coder

All positions are fully remote in the countries listed unless otherwise specified.

[1] Senior Software Engineer - US/Canada

[2] Software Engineer (AI Governance) - UK/Ireland/Poland

[3] Security Engineer (Product) - UK/Ireland/Poland

[4] Security Engineer (Infrastructure) - US/Canada

[5] Senior Security Engineer (IT) - UK/Ireland/Poland

[6] Developer Relations Engineer - US

[7] Forward Deployed Engineering Manager - US

[8] Platform Engineering Lead - UK/Ireland/Poland

And more! Apply here + job descriptions, salary bands: https://coder.com/careers?utm_source=O2n5Ew72WD

Not all of our jobs are listed here. Please note that you must submit an application to be considered for any of our positions. If you have any questions, please reach out to careers@coder.com.