Link11 | QA Engineer | Remote (EU time zone) | Full-time | https://www.link11.com

As one of our QA Engineers, you'll be the guardian of product excellence - thinking like a hacker, testing like a detective, and ensuring our complex systems work flawlessly in the wild. You'll go beyond finding bugs to anticipating the unexpected: edge cases, weird component interactions, and those "no user would ever do this... but what if?" scenarios that separate good products from great ones.

What You'll Own:

* Design battle-tested strategies that catch issues before customers do

* Build automated test suites that scale with our ambitions

* Hunt down bugs across complex component interactions and configurations

* Partner with dev teams to ship quality at speed

* Be the voice of risk assessment when it matters most

You Should Have:

* Critical thinking that connects dots others miss

* Deep web tech knowledge (HTTP/HTTPS, DNS, SSL/TLS, CDN)

* Automation chops (Python, JavaScript, Bash)

* Experience with test methodologies and writing bulletproof test cases

* Debugging skills that turn logs into insights

* Communication skills that turn complex issues into clear actions

Why Join?

You'll be testing cybersecurity products that defend critical infrastructure against DDoS attacks – a single bug could mean the difference between stopping an attack in <10 seconds or watching a bank, power grid, or hospital go offline. This isn't just QA – it's cyber defense at the highest level.

If breaking unbreakable systems and ensuring bulletproof security for critical infrastructure sounds like your kind of challenge, come lead, code, and conquer with us: https://www.link11.com/en/jobs/qa-engineer-remote-first-f-m-...

HomeVision | Multiple Roles- Eng, SRE, Analytics | Hybrid SF & Remote | Full-Time | $100k-$220k + equity We have three open roles:

- Engineer - Hybrid SFO I'm looking for an junior-to-senior software engineer to work with me (CTO) directly. Our systems process millions of pages of documents a month for the mortgage industry. We work with some of the largest lenders in the country and are at the forefront of applying LLMs and other multi-modal models in this industry.

New-grad and junior engineers particularly encouraged to apply. Looking for people who are motivated to write good code with a good mix of practicality and aesthetics.

- SRE - US Remote (SFO or Seattle preferred) - This is a broad role on the platform team including AWS infra w/terraform, software engineering, and IT

- Analytics Engineer - US Remote (SFO or Seattle preferred) - Another broad role that includes managing the data warehouse, building durable and ad-hoc reports in sql and python, and doing deep analysis.

Please apply here: https://jobs.ashbyhq.com/homevision/a3f79d43-5d9e-46bf-a43f-...

We are looking for a full-stack "ninja" to join BetterSea full-time.

We are a team of entrepreneurs, decarbonisation experts and tech enthusiasts who believe in purpose-driven innovation. We are building a maritime carbon exchange as an engine to commercialise maritime decarbonisation.

In just 2.5 years of existence, we have made history in launching the first regulatory carbon exchange index, capturing 10% of the global market, 50% of SOM, getting awards and being featured in top maritime newspapers. The team grew from to 22 this year. Metrics wise, we are revenue-generating, close to breaking even and approaching series A.

Looking fora backend heavy full-stack developer, 5+y experience in python , fastapi, drf, docker, GCP, terraform. frontend react, redux, zustand, tailwindcss (chakra ui, or shadcn - similar libraries)

Position: remote, CET (+-2h) Type: contract Process: call with the founder and head of engineering, tech test, offer

Apply:: gordana.ilic@bettersea.tech (add HN in subject line)

Howie | Senior Engineer (AI Search / RAG) | Vienna / Remote (EU) Early-stage AI startup in AEC (building architecture), live product, EU/UK customers, backed by Pi Labs & DAR.

Looking for a hands-on senior engineer to own AI search & retrieval in production (Python, RAG, vector DBs, cloud). Strong bias to shipping.

Salary + meaningful ownership. Apply: ewa@howie.systems (ewa- i am a founder&CEO, team 6 FTE atm, raising seed now and growing) https://howie.systems Full JD: https://bit.ly/4prjMTJ

Blackshark AI | Software Engineers & Platform Engineer | Full-time | Austria or Remote EU Hours | VISA sponsorship available

We build geospatial AI infrastructure. Our platform lets analysts train custom object and change detection models on satellite/aerial/drone imagery in minutes, then reconstructs 3D terrain from those detections. We just shipped a planetary-scale simulation platform with Lockheed Martin powered by Unreal Engine.

If you want to work on distributed systems that run in a data center one day and an edge laptop the next, we have interesting problems. Our training and inference infrastructure is processing trillions of pixels and we deliver real world impact for our customers across defense, intelligence, and local governments.

Tech Stack: Python, Fast API, PyTorch, Postgres, Redis, Vue.js

Infrastructure Stack: Kubernetes & Docker, Linux, AWS & Azure, Azure DevOps, Terraform, ELK, Prometheus & Grafana, ArgoCD & Helm

Roles:

Software Engineer - Data Plane Team: https://jobs.eu.lever.co/blackshark/6110fedd-5cd8-40e5-ac11-...

Software Engineer - Machine Learning Team: https://jobs.eu.lever.co/blackshark/7c4b0833-790b-4490-b24a-...

Platform Engineer - Deployment Team: https://jobs.eu.lever.co/blackshark/56a85834-d986-4105-9cc8-...

or reach out to HM at: 'eivanov@' + username[:-2] + '.' + username[-2:].lower()

myDataValue.com | Senior Founding Engineer | Fully Remote (UK Only) | £90k + 2% equity | Raising at £5m round

We are an AI-driven Hospitality Tech platform helping vacation rental owners automate their revenue on Booking.com. We are bootstrapped, profitable (£100k ARR), and growing month-on-month.

We are looking for a Founding Engineer (Python/Django) to partner with us (2 founders) and scale our infrastructure. This is a fullstack role (React) involving high-volume scraping, browser automation & agents.

- Stack: Python, Django, Postgres, React

- Challenge: Enterprise-scale scraping (1000s req/s), reverse engineering, and AI agents.

- Deal: £70k - £90k + Up to 2% Equity.

We are currently raising a round at £5m valuation with top VC's.

Apply here: https://www.mydatavalue.com/founding-full-stack-senior-engin...

Or email me your cv: martin@mydatavalue.com

Monadical.com | Senior Full-Stack Engineer | Full-Time Montreal | REMOTE (Canada-Quebec)

Monadical is a fully remote software consultancy. We’ve built a diverse, friendly team that gets exposed to diverse industries and learning opportunities through our 3-12+ month projects across multiple sectors. Check our portfolio to see what we mean.

We also maintain company principles that guide who we work with and how we maintain our culture. It’s a collaborative effort that any employee can edit through a pull request. We’re a relatively flat organization, fully-remote, and operate across many different toolsets and stacks depending on project needs. We’re a diverse team that shares similar values: self-direction, technical excellence, and curiosity. We do a lot of R&D and move quickly. That often means doing whatever it takes to answer a question and being quick to adapt to new information. Our iteration cycles are short.

We’re seeking:

- Senior Full-Stack developers strong at Python and/or JS, with experience in client relations, project management, a good understanding of machine learning systems, particularly LLMs, strong UI/UX design, and user research skills to help us build more thoughtful AI-powered products. Experience with ML models deployment and LLM application development is a plus.

See the full description and apply here: https://careers.monadical.com/

If you have any questions, drop us an email at apply at monadical dot com

Some perks of working with us include: • Work from home (we’re fully remote!) • Flexible working hours • Six weeks of paid vacation • Competitive salary • Autonomy •Flat organizational structure. Your ideas matter, regardless of your title

Bond Home | ON-SITE in Florianopolis, Brazil | FULL TIME | Multiple Roles

We are building smart outdoor living spaces.

Come work with a cracked team, in-person, building primarily for the US market.

Interested to hear from talented: firmware engineers (C), mobile (iOS/Android native), backend (Python), UX designers, & quality engineers.

We're heavy users of agentic coding (Claude), looking particularly for engineers who can scale their output with increased access to compute, while being meticulous about security & quality.

Hiring exclusively in Brazil. Must be in or willing to relocate to Santa Catarina. We have an office right by UFSC. We work with a lot of hardware and so an in-office culture is efficient.

Some travel to USA required.

email a pitch to: merck@olibra.io

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 (Integrations)

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

Trail of Bits is a cybersecurity research and consulting firm based in Brooklyn, NY. We work with companies like Epic Games, Google, Microsoft, and Zoom on their hardest security problems: smart contract audits, application security, vulnerability research, and more.

We're hiring 10-12 summer interns (June-August) to work on real client projects and research alongside our security engineers in NYC. You'll contribute to software security assessments, tool development, and research that gets published. What we're looking for:

Strong technical skills: C/C++, Rust, Go, Python, Solidity, etc. Experience in reverse engineering, appsec, program analysis, smart contracts, or cryptography

NYC interns get the full experience: Summercon, team events, Broadway shows, and more.

Remote available for strong candidates.

Actively reviewing applications and interviewing now.

Apply: https://apply.workable.com/trailofbits/j/0C784B6D41/

Layer Health | https://www.layerhealth.com/ Our engineering team: https://www.linkedin.com/company/layerhealth/people/ Location: BOSTON (Boston Common) or NYC (downtown) - hybrid / NO REMOTE Headcount: ~35 Stack: React / Typescript / Python / GCP Series A, fresh funding: https://www.layerhealth.com/resources/layer-health-raises-se...

Our interview process (candidates love it): meeting w/ me > tech chat with cofounder > take home assignment (capped at 2-3hrs) > onsite interview > offer (no leet code, no algorithms or pressured oddball questions)

Open Roles: Fullstack Engineer (Senior) Python/React/Typescript * Forward Deploy Data Scientist (1-2 years xp) * Jr Data Engineer (1-2 years xp) * ML Engineer * ML Infrastructure * Data Infra Lead Engineer * Research Scientist (PhD req) * Security Engineer

We Offer: * competitive base salary + equity + great health/medical benefits * unlimited PTO * collaborative engineering-first culture

Layer Health was founded in 2023 by leading machine learning researchers from MIT and Harvard Medical School. We are building an AI layer that can accurately and scalably synthesize information from medical records, with the mission to reduce friction everywhere in healthcare. Our LLM-powered platform is solving chart review once and for all, across use cases. For health systems, our first product dramatically accelerates clinical registry abstraction in areas ranging from surgery and cardiology, to oncology. Our long term vision is for our AI layer to safely transform patient care and minimize unnecessary heartbreak. Layer Health’s diverse founding team brings expertise across machine learning, UI/UX, large language models, and medicine.

Email me at mike.hauschild@layerhealth.com for more info!

Careforce AI (previously Helpcare) | Senior Fullstack Engineer | REMOTE (US)

Location: Remote (US) Remote: Yes (US Only) Willing to relocate: No Technologies: Python, FastAPI, React, Supabase, GCP, LLMs Résumé/CV: https://www.ycombinator.com/companies/helpcare-ai/jobs/Hjx9n... Email: Apply via link above

Description: Careforce AI is building autonomous AI agents that eliminate the manual administrative burden in healthcare (fax machines, scheduling, calling). We find, call, and schedule patients, breaking interoperability barriers that have plagued the industry for 40 years. We are a well-funded, YC-backed company with massive customer demand.

We are looking for a Senior Fullstack Engineer to be a foundational member of our small, ambitious team. You will have significant ownership working across the stack to build and scale the core of our AI agent platform. We are looking for builders with 5+ years of experience, preferably with an early-stage startup background (Pre-seed to Series A).

Hiring Tech Lead and SRE – REMOTE LATAM - We build AI tools that help high-volume law firms manage their caseloads more efficiently. Our first product—an AI assistant that transcribes and classifies inbound calls—is in production. We’re now expanding into case tracking, follow-ups, and full workflow automation.

Looking for:

Tech Lead: Lead a senior team, shape product and tech, work closely with founders.

Tech Stack: Python, TypeScript, Postgres, Kubernetes, GCP Languages: Spanish + English for leadership. English only OK for engineers.

SRE: DevOps & Infrastructure Engineer // CI/CD and Kubernetes

Apply here: tramcase.com

Senior Python Backend Engineer | REMOTE

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/

Prophet Town LLC | Various Software Engineering Roles | US – Remote and Hybrid | English fluency required | Full-time | $150K-$250K annual total comp (multiple)

I’m the founder, trying to do “enlightened business.” We are a people-first, fully-remote, boutique indie tech agency – building a team of talented, high integrity, and community-minded individuals first, then building businesses around them. Our leadership staff are ex-Fortune 100; everybody touches code. Notable recent projects: internal tools for Anduril, and the auction system for voltagepark.com.

We’re currently especially seeking:

Full-Stack Software Engineers (React, NextJS, Ruby on Rails; Typescript, Python; Database Design, Devops, and third-party API integrations)

IoT Developers (Python, MQTT, GraphQL, AWS, Test Infrastructure)

Please apply using this Google Form: https://forms.gle/Dxpj7eTwcHpjiGT39. Applicants who submit before January 15 will typically receive a reply by January 31. Tier3 roles are typically 5-10 y/o/e with $150-$175k annual total comp. Tier4 roles are 11-20 y/o/e, $210-$250k annual total comp. Higher tiers exist, and we welcome exceptional applications.

REGARDING DECEMBER - if you already submitted to last December's post, and haven't heard from us yet, we're still getting to you. The team's been working really hard over the last year, and I unexpectedly gave most of the folks helping me with job submissions the time off at the end of December / beginning of January. Apologies for the delay, and we will be with you soon. Rest assured there are jobs we're trying to fill - in fact, more than ever, it seems.

BetterBugs | Remote | Full-time | https://betterbugs.io

We’re building debugging intelligence for modern software teams. BetterBugs captures rich technical context at the moment a bug occurs and turns it into actionable insights for developers — not screenshots, not back-and-forth.

Our next leap: AI that understands bugs, not just describes them.

Senior AI / LLM Engineer (Python) : Build production LLM systems that understand real-world bug context (logs, stack traces, network, user actions). Design agent workflows for root-cause analysis, bug triaging, and debugging assistance. Implement RAG pipelines grounded in codebases, historical bugs, and execution data. Own prompting, evaluation, reliability, and observability of AI outputs. Build and operate Python services (FastAPI) powering AI features in production. Strong Python, hands-on LLM/agent frameworks, Docker; bonus for dev tooling or observability experience.

Findigs | Full-time | NYC | 3x/week in office (M,T, Th) | findigs.com

At Findigs, we’re transforming the rental experience — making it fairer, stress-free, and more convenient by changing the fundamentals of renting.

We build high-scale applications that streamline renting for millions. Our modern tech stack includes Python, Typescript, Node.js, React, and scalable cloud infrastructure.

We foster a collaborative culture where engineers have high ownership and autonomy, taking features from concept to deployment.

Join our sharp, supportive, and mission-driven team in our newly renovated SoHo/NoHo office.

Open role: Senior Software Engineer —> Apply here (https://jobs.lever.co/findigs/3b39616d-223f-4326-a500-f804c3...)

Base Salary of $180k - $210k

Pre-IPO Equity

401k Matching up to 4%

Unlimited PTO

Lunch in office every day, home office setup stipend, monthly gym stipend

Terrabase | Remote | Full-time | https://terrabase.ai/

We’re building long-horizon agentic analytics for real enterprises. Systems that reason over messy data, run multi-step workflows, and produce decisions that can be trusted.

Agents that plan, execute, recover, and explain why an answer is correct.

Senior Software Engineer (TypeScript): Build workflow orchestration systems, schedulers, and execution engines. Own Node.js services + React UIs end-to-end. Reqs: 5–8+ yrs TS/Node/React, event-driven systems, queues, Docker. Bonus: Temporal, n8n, Airflow, Dagster, multi-tenant SaaS.

Senior AI Engineer (Python): Build production LLM agent systems: orchestration, tool use, evals, RAG, safety, observability. Reqs: Strong Python, agent frameworks (LangChain or similar), FastAPI, Docker.

Email me (I am the CTO): jainit@terrabase.ai. Please mention "HN" in the subject and include your GitHub.

L2 Labs | Founding (Software / AI) Engineer | NYC (Hybrid) | Full-time | Salary + Equity

L2 Labs is tackling hard problems in supply chain & logistics, operating as an applied AI research lab. We aim to be equally focused on solving hard problems for our customers and publishing about it at A* research venues.

We’ve already raised our pre-seed round, are partnered with major universities, and have an enterprise customer in global supply chain communications. We are looking for curious, driven, technical folks with an Olympic work ethic who want to join our founding team, stepping into an owner-operator role. You will work alongside skilled engineers and PhDs from top universities on greenfield problems.

Stack: Python, AWS

Email hiring [at] l2labs [dot] ai if you're interested!

Corgi Insurance (YCS24) | San Francisco & London | 7 days a week ONSITE

Taking on the entire insurance industry.

Full stack software engineers. Python and typescript.

https://calendly.com/sam-corgi/session

corgi.insure