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/

G-Research | London, UK | On-site | https://www.gresearch.com/

We’re a quantitative research and technology firm bringing together world-class researchers and engineers to tackle complex problems in financial markets.

Our engineers play a central role, building the systems and platforms that turn research into production and enable large-scale experimentation.

If you’re interested in working with near-infinite compute, advanced technology and a team that values curiosity, take a look at some of our open roles in Technology:

- Performance Engineering Manager: https://www.gresearch.com/vacancies/performance-engineering-...

- ML Performance Engineer: https://www.gresearch.com/vacancies/machine-learning-perform...

- Quant Developer: https://www.gresearch.com/vacancies/quantitative-developer/

- Machine Learning Engineer: https://www.gresearch.com/vacancies/machine-learning-enginee...

- Production Software Engineer: https://www.gresearch.com/vacancies/production-software-engi...

Gigs (YC W21) | Multiple US & EU Locations | Hybrid | (SF, NY, Berlin, London) | Full-time

At Gigs, we're building the operating system for mobile services - a platform that enables tech companies to seamlessly embed connectivity into their products. Klarna Mobile, OnePay Wireless and Revolut Mobile are powered by Gigs!

We are looking for exceptional candidates, looking to do the best work of their careers, across a wide range of roles:

- Implementation Managers - Founding AEs - Fullstack & Backend Engineers - Product Chief of Staff

And more!

To apply go to our careers page: https://gigs.com/careers#positions

Lago (YCS21) | Hiring for Multiple roles in Product and Engineering across EUROPE and USA (https://jobs.ashbyhq.com/lago)

Lago is the leading open-source billing platform for usage-based pricing. We power billing for companies like PayPal, CoreWeave, Mistral AI, and Synthesia — handling real-time metering, hybrid pricing models, credit wallets, and multi-entity invoicing. We raised $22M (Series A led by FirstMark, seed backed by Y Combinator) and are growing fast across AI/ML, developer infrastructure, and enterprise segments.

- Infrastructure Engineer (Europe) - https://jobs.ashbyhq.com/lago/7f42566e-f778-4925-bd7e-745fc9...

- Product Engineer (Europe) - https://jobs.ashbyhq.com/lago/bc48913d-6ae7-4a56-b427-af9213...

- Product Engineer (Growth focused / USA OR Europe)- https://jobs.ashbyhq.com/lago/638af98e-061c-4f8b-adf0-ec2331...

Apply through the links - looking forward to hearing from you!

Matcha | REMOTE (Europe / UK / Canada / US) | Full-time | https://matcha.fm

Repeat founder building something new and putting together a founding team.

This for high ownership, ideally for people with prior startup experience or previous founder / founding team:

Full-Stack / Frontend / AI Engineer — https://matcha.fm/apply/fse

Backend Engineer — https://matcha.fm/apply/be

Design — https://matcha.fm/apply/design

Product — https://matcha.fm/apply/product

Growth / GTM / Marketing — https://matcha.fm/apply/marketing

Sales — https://matcha.fm/apply/sales

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.

Happy Returns | Engineering Manager | Remote, USA | Full-time

Happy Returns is solving one of e-commerce’s biggest pain points: returns. We combine proprietary returns software with reverse logistics, including box-free consolidated returns, to make returns better for shoppers, retailers, and the planet. We’re a UPS company, growing quickly, and our shopper experience has a 93 NPS.

We’re hiring an Engineering Manager to lead a team of 6–8 engineers. You’ll manage day-to-day execution, coach and mentor engineers, improve team productivity and agile processes, partner closely with Product, participate in architecture and technical design reviews, and help recruit and onboard new engineers.

You may be a fit if you have:

* 6+ years developing and testing web applications * 2+ years as an Engineering Manager * Strong written and verbal communication skills * Experience coaching engineers toward high-quality, maintainable, well-tested code * Comfort collaborating closely with Product, DevOps, QA, and other stakeholders

Bonus points for experience with Go, Python, React, PostgreSQL/MySQL/MongoDB, Docker, Kubernetes, AWS, e-commerce, logistics, or sustainability.

Remote role open to candidates in the United States. Must be authorized to work in the U.S.; we are unable to offer sponsorship at this time.

Apply: https://www.linkedin.com/jobs/view/engineering-manager-remot...

At SentiLink, we stop identity fraud at scale. Our products protect banks, fintechs, marketplaces, and leading financial institutions from synthetic identity fraud, identity theft, and emerging threats — analyzing millions of applications while keeping real users moving fast.

We’ve seen tremendous traction and are growing extremely quickly. Our real-time APIs have helped verify hundreds of millions of identities, starting with financial services and rapidly expanding into new markets. SentiLink is backed by world-class investors including Craft Ventures, Andreessen Horowitz, NYCA, and Max Levchin.

SentiLink supports a variety of ways to work, ranging from fully remote to in-office. We operate as a digital-first company with strong collaboration across the U.S. and India. We maintain physical offices in Austin, San Francisco, New York City, Seattle, Los Angeles, and Chicago in the U.S., and in Gurugram (Delhi) and Bengaluru in India. If you’re located near one of these offices, we would love for you to spend time in the office regularly. Some roles are hybrid or in-office by design. For example, our engineering team in India works primarily from our Gurugram office.

We’re a small, high-impact team solving one of the most interesting and adversarial problems in fintech: how do you build systems that reliably determine whether a real human is on the other side of a financial transaction?

We’re hiring across Engineering (Full-stack and Infra) and Data Science / ML roles. Hiring at Manager level as well as mid-level/Senior levels.

We’re language-agnostic and hire for fundamentals. Across the team you’ll see: • Python, Go, Rust, Scala • PostgreSQL, Snowflake • Kafka, Redis • Terraform, Kubernetes • ML: XGBoost, PyTorch, Feature stores, real-time scoring pipelines

If you love solving complex distributed systems challenges, building customer-facing ML products, or working on detection systems that must be both high-precision and low-latency, you’ll fit right in.

Roles are here: https://jobs.ashbyhq.com/sentilink?utm_source=hacker_news

If you have questions, feel free to reach out directly at liz.woodfield at sentilink dot com.

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

Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts at the speed of human ideation. By treating manufacturing as a single integrated system, we unlock a new era of innovation where complex hardware is designed, built, and scaled without limits. This isn’t just an improvement; it’s a leap forward in how complex metal parts are made, with the ability to revolutionize industries like aerospace, defense, automotive, energy, and beyond. We are backed by top VCs including NVIDIA’s NVentures, Founders Fund, Threshold Ventures, and Apandion.

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

A glimpse into our software landscape - https://www.youtube.com/watch?v=nFWQArUkd5I

Our feature in TechCrunch announcing our $67M Series B Raise! https://techcrunch.com/2026/02/19/freeform-raises-67m-series...

Reqs will vary depending on what the hiring needs are but should be formatted as:

+ Principal Software Engineer - https://grnh.se/27ajbj9k3us

+ Senior Factory Software Engineer - https://grnh.se/m2l08z853us

+ Senior Software Engineer (Embedded) - https://grnh.se/hb838bth3us

+ Software Engineer (Full Stack Enterprise) - https://grnh.se/26cvuixl3us

+ Factory Software Engineer - https://grnh.se/hnwff2s23us

FranklinCovey | https://www.franklincovey.com/ | Senior Software Engineer | Remote (US) | Full-time

We're in the business of leveling up managers and making workplaces great, in search of a senior software engineer who's looking to join a team and do good work architecting, building, and maintaining a web platform that facilitates learning both online and in-person.

Stack: Django, Python, React, TypeScript, PostgreSQL, AWS

For more details, please check out: https://careers.franklincovey.com/virtual-usa/senior-softwar...

First non-founder hire | Recover Systems | Onsite in Portland, Maine | 130-160k + meaningful equity from first option pool

Recover is building the infrastructure for all restoration, streamlining the entire workflow for remediation contractors so they can get the essential work done, while we handle the headaches. Recover is built by insurance requirements, financial ledgers, spatial intelligence and hundreds of messy workflows.

We've just closed our seed round, live desktop and IOS app and are ramping up to convert demo offices to live deployments and rolling out to 50+ waitlisted offices. We're sprinting fast to cover the last features in V1 roadmap including subcontractor portal and insurance disputes workflows and one-click materials marketplace.

We're hiring for a specific type of engineer:

PM-minded engineer for messy domains. The rare hybrid who can sit across from an insurance adjuster, a franchisee, and a senior estimator in the same day, walk away with the actual workflow in their head, and collapse a scattered process into a single screen the technician actually wants to open. Owns the full loop: stakeholder interview → spec doc → spreadsheet model → prototype → production. Equal parts taste, insight, and stamina. Ships features that flow smoothly and improve how work gets done.

Apply here if interested: https://wellfound.com/recruit/jobs/4133725

Better Stack | https://betterstack.com/ | /^Full-?stack Engineer$/i | Remote (North America & Europe)

We are software builders at :heart: CEO is a software engineer, COO is a software engineer, and you guessed it, CTO is an engineer, too. We are engineers, making the tools we always wanted. If you love building amazing software, you're at the right address.

We are looking for software engineers who, given enough time, could build Better Stack on their own = looking for full-stack product engineer generalists to help us create high-quality software with exceptional UX, end-to-end.

Apply at https://betterstack.com/careers/fullstack-engineer

How we operate: https://betterstack.com/careers – https://betterstack.com/careers/engineering – https://juraj.blog/

Clad (YC W23) | Software Engineer | NYC | withclad.com

Clad is software for building physical infrastructure. We help contractors automate their back office so they can scale their business.

We're a 7 person team in person in NYC, raised $2.7M, have >4 years of runway, and are growing faster than we ever have in the history of the company.

You'll build a well-crafted product, and work on challenging problems at intersection of AI, construction (mapping), and fintech.

Apply here: https://www.ycombinator.com/companies/clad/jobs/YHGyRSf-full...

Or email me at jason [at] withclad [dot] com

Anvil | Founding Computational Geometry Engineer + Full-Stack Engineer | Greater Boston | HYBRID | Full-time | $140k-$180k + 0.5-2.5% equity

We're a seed stage (VC backend) company building a vertically integrated design and manufacturing platform for precision mechanical parts. We are developing our own CAD/CAM software running on top of our own manufacturing facility. The team has previously developed CAD kernels, design software, and autonomous robotic manipulators, and comes from Amazon Robotics, Siemens, nTop, and Vicarious Surgical.

Most design and manufacturing software companies treat the factory as a black box and optimize geometry in isolation. Our bet is that the only way to really bring software and ML into design and manufacturing is to own the full process ourselves. The platform you'd help build includes: customer-facing design software, the ML engine that turns CAD files into machine instructions (G-code), the simulation layer, and the shop floor operations themselves.

We are looking for someone independently driven who wants to operate like a founder. You'd own architecture, help shape the company's vision, and build a product from the ground up. If you've worked on cloud infrastructure, distributed systems, CAD/CAM software dev, geometry kernels, robotic perception, motion control, or spent time on a shop floor, we'd like to talk. We are open to sponsoring visas for the right candidate.

Roles:

Founding Computational Geometry Engineer: Hybrid B-rep + SDF kernel work. STEP AP242 ingestion, B-rep surgery, feature recognition, and the geometry layer underneath our DFM and CAM pipelines. If you've worked on Parasolid, OCCT, nTop, or shipped anything that touches BRep diff, parametric replay, or differentiable geometry, we want to talk. C++ and Python.

Founding Full-Stack Engineer: Someone who can take ownership of the reliability, automation, and evolution of our core systems that tie into our CAD/CAM software, internal shop-floor systems. You’ll work across the stack, with a strong emphasis on backend, infrastructure, and system-level engineering, to strengthen the foundations that everything else runs on. This role is for someone who enjoys digging into complex systems, building the architecture and tooling to keep them running reliably (including the frontend).

Email me directly: hiring [at] anvil.co, mention HN. I reply to everyone.

Kanmon | Senior FullStack Engineer | Hybrid (San Mateo) or REMOTE Kanmon is built around B2B finance and it's one of the largest and most broken markets in the world. SMBs are 44% of US GDP and extend over $5 trillion in trade credit to each other every year yet modern financial infrastructure intermediates less than 10% of it. The rest still runs on PDFs, paper invoices, and underwriting cycles measured in months.

Kanmon is rebuilding that stack from scratch. We're the finance infrastructure that lets software platforms embed payments and working capital directly into the software their SMB customers already run their businesses on.

Kanmon has raised new capital to go a layer deeper and are building an AI cashflow and business credit copilot that helps businesses make smarter financial decisions in real time. It's a genuinely new category of product, and we're architecting it from zero.

We're hiring a senior full-stack engineer to own it. End-to-end ownership, direct line to founders, no PM handoffs.

Full stack TypeScript: React, Next.js, NestJS, PostgreSQL, GCP. Competitive comp | mags@kanmonhq.com

Unit | Senior & Staff Engineers | San Francisco | Full-time | On-site

Unit is building an AI agentic video platform for personalized marketing videos.

We have strong traction with enterprise customers and are hiring Senior and Staff Engineers to help build the core platform across agent architecture, AI video/image workflows, media infrastructure, customer data ingestion, enterprise integrations, publishing systems, and feedback loops from real marketing outcomes.

Our team comes from Instagram, TikTok, NVIDIA, Roblox, Airbnb, and Robinhood. We're backed by Khosla Ventures, Air Street Capital, and angels from top AI labs.

Roles:

- Backend: https://www.unit.inc/careers/software-engineer-backend

- Fullstack: https://www.unit.inc/careers/software-engineer-full-stack

- ML Infra: https://www.unit.inc/careers/software-engineer-ml-infra

Reach out directly: careers [at] unit.inc

Maiven | Full-Stack Engineer, UX/UI Designer, Energy Modeling Engineer | REMOTE (US) | Full-Time

At Maiven Energy, we're working on real-world problems at the intersection of responsible AI and residential energy. Our aim is to make energy upgrades smarter, faster, and more accessible, while helping reduce carbon emissions. We're a small, mission-driven team punching way above our weight: we have large utility customers, contracts in multiple states, and a growing pipeline of programs launching later this year. We're venture backed and moving fast.

We're hiring for three positions:

- Full-Stack Engineer – NestJS, React, Tailwind, TypeScript, Node, Postgres, AWS, Lambdas. [1]

- Energy Modeling Engineer – Python, pandas, AWS, modeling frameworks (ResStock, OpenStudio, etc.). Experience with energy programs or building science is a huge plus. [2]

- UX/UI Designer [no link]

Looking for builders who want real ownership, thrive in early-stage startups, and move with urgency and care. More: https://www.askmaiven.com

To apply: email hiring _at_ askmaiven.com. Generic, AI generated cover letters and resumes are discouraged.

[1] https://climatebase.org/job/69488877/fullstack-engineer

[2] https://climatebase.org/job/69488878/energy-modeling-enginee...

Oscilar.com | Sr/Staff Software Engineers, PM, Data Analyst | REMOTE (US/Canada/Brazil/Poland/UK) | Full-time AI Risk Decisioning™ platform that helps organizations manage onboarding, fraud, credit, and compliance risks

Open roles: - Sr./Staff Java Backend Engineer (Brazil/North America) - Staff GenAI Engineer - Staff Web SDK Engineer - Full-Stack Engineer ~ AI Agent Platform - Sr./Staff Security Engineer - Product Manager - Fraud & AML Data Analyst Apply at: https://jobs.ashbyhq.com/oscilar?utm_source=HackerNews

Fullstory | REMOTE (US), Atlanta USA, & Bogotá Colombia | https://www.fullstory.com/

Fullstory offers privacy-preserving session replay and analytics for websites and mobile apps. Our session replays are nothing short of magical, and the combination with our automatic analytics creates eye-opening insights.

Remote (US):

* Senior Manager, Security Engineering - $230~240k USD + up to 20% bonus - https://www.fullstory.com/careers/jobs/110896c1-25d8-4c96-82...

Atlanta, US (semi-onsite, requiring 1 day per week in office):

* Senior Software Engineer, Web Capture - $145~170k + up to 10% bonus - JavaScript/TypeScript, React, Go (golang) - https://www.fullstory.com/careers/jobs/3b8d231f-ae95-4f95-84...

* Senior Software Engineer, Data Pipeline - $160~180k USD + up to 10% bonus - Go (golang), Kubernetes (K8s), GCP - https://www.fullstory.com/careers/jobs/9debecd5-7af9-48e9-91...

* Senior Software Engineer, Data Infrastructure & AI - $160~170k USD + up to 10% bonus - Go microservices, MCP server, dbt models - https://www.fullstory.com/careers/jobs/20dd3185-3313-4ac3-b1...

* Senior AI Automation Engineer, Finance - $135~145k USD + up to 10% bonus - https://www.fullstory.com/careers/jobs/4480a6d5-231e-420c-a6...

* Sales Engineer - $90~140k USD - https://www.fullstory.com/careers/jobs/89a34b65-2470-4ae2-bd...

Bogotá, Colombia:

* Senior Software Engineer, Data Management - $80~89k USD + up to 10% bonus - https://www.fullstory.com/careers/jobs/38395836-21ca-4663-85...

We have additional roles for sales, consulting, accounting, and customer support open in Atlanta, London, Australia, and some Remote (US) options. See the full list at https://www.fullstory.com/careers?utm_source=092xpqyAkV

For US roles, you can expect regular raises & bonuses, equity, and benefits including: health insurance, 401k matching (Vanguard), annual learning stipend, unlimited PTO, parental leave, and more. I take about 4-5 weeks vacation a year, in addition to ~3 weeks worth of company holidays (federal holidays + the week of Christmas to New Years.)

Folks in other countries can also expect a strong benefits package, but I'm not as versed on the details.

Additionally, you get a 5-week sabbatical after 5 years of employment - I took mine about a year ago, and it was fantastic.

To apply, please submit your info on the website, and our recruiting team will get in touch with you. If you have questions, feel free to reply here or contact me directly. (I'm an engineer on the iOS team, but I'll do my best to answer questions.)

Location: Charleston, SC

Remote: Yes

Willing to relocate: Yes

Technologies: Ruby, Python, JavaScript (ES6), TypeScript, React, Node.js, PostgreSQL, MongoDB, OpenSearch/Elasticsearch, AWS (ECS, EC2, VPC, ALB, Secrets Manager), Docker, Terraform, OpenTelemetry, Jaeger, Prometheus

Resume/CV:https://drive.google.com/file/d/1aBYTxqlWIKmm59UT5ffK493tKR0...

LinkedIn: https://www.linkedin.com/in/zane-lee-14496a297/

Email: zanedev28@gmail.com

GitHub: https://github.com/Kcstills17

Co-creator of Retriever (https://runretriever.app/), an AWS-deployed observability platform that enables AI-powered trace analysis through distributed systems. Built a custom MCP server allowing developers to query trace data using natural language through LLMs like Claude, optimizing context consumption through intelligent data distillation from verbose OTLP structures.

Experienced with building full-stack applications. I am comfortable using AWS as a cloud environment and have experience with AI technologies such as RAG, MCP, and Vector embeddings.