Flagler Health | Remote | Software Engineer, DevOps, SRE, Data Engineer We’re an AI/ML start-up revolutionizing the healthcare tech space by helping physicians provide better care for their patients in MSK pain management. We dive deep into clinic data to provide meaningful insights for our clients (clinics). We’re currently scaling out our core product and need someone to handle the infrastructure (web and data) of our live production system. Half of our engineers are from HN! We are hiring for multiple positions: data: Fullstack Engineer (Frontend focused), (Foward deployed) Backend Engineer.

See job post for continuously updated job descriptions:

https://jobs.ashbyhq.com/flaglerhealth -- keywords: node, typescript, javascript, ts, js, vue, twilio, webrtc, FHIR, HL7 -- Drop a resume in engineering posting for general consideration. —- hot tip: put "HN" on "How did you find us"

LEGO | London (Farringdon) | Hybrid (3 days a week in the office)

* Lead engineer on the personalisation / recommendation engine

* Python, Node JS / TS, Databricks, Aurora RDS, AWS, API Gateway

* Experience required in both data engineering and software engineering

* Experience welcome in ML engineering and data science

I've worked on this team for a year or so now and it's fair to say that there's been no shortage of things to work on - you'll be immersed in the challenge of distributing personalised recommendations across the business and become a part of a company which adopts a lot of the nice danish working practices. The office culture is an important aspect of the business so 3 days a week is a needs-must. If this sounds like your bag - apply below:

https://www.lego.com/en-us/careers/job/lead-engineer-persona...

Founding Engineer – AI/Finance (Retail Trading Research & Strategy) - Remote or New York City

We are building an AI platform that empowers retail traders with institutional-grade research tools and real-time strategy guidance. As our first technical hire, you will own the full lifecycle from AI model research to production deployment. You will design and implement data pipelines for market, news, and sentiment feeds, fine-tune LLMs for financial reasoning, and ship features that help retail traders make smarter, faster decisions with hedge-fund-level tooling. You will collaborate directly with AI researchers, engineers, traders, and quants from top institutions to bring financial intelligence to the retail trading world.

Minimal Qualifications Proficiency in Python and modern ML/AI frameworks (e.g., PyTorch, JAX) Hands-on experience with LLMs, transformers, time-series modeling, or AI agents Strong understanding of cloud infrastructure (AWS/GCP), scalable API development, and data engineering pipelines Proven ability to take projects from initial concept to production deployment Master’s or PhD in Computer Science, Mathematics, or Physics (in progress acceptable), or a Bachelor’s degree with a proven track record of work supported by a GitHub

What We’re Looking For AI/ML Expertise – Proven experience with LLMs, transformers, or other foundation models Cloud & Infrastructure Skills – Proficiency in the Python ML stack, scalable API development, and cloud platforms such as AWS or GCP End-to-End Ownership – Ability to take projects from concept through production deployment Research Mindset – Experience implementing state-of-the-art AI methods and conducting research in ML/AI

Nice to Have Publications in ML/AI conferences (NeurIPS, ICML, ICLR, ACL, CVPR, etc.) Trade strategy generation and backtesting experience Interest in trading and understanding of retail workflows across stocks, crypto, and futures Familiarity with brokerage APIs (Interactive Brokers, Alpaca, etc.) Knowledge of options strategies, risk management, and portfolio optimization The drive, creativity, and technical depth to be that “cracked” engineer

Email Resumes/GitHub: alexyskoutnev@gmail.com

Perion | Advertising Technology | https://perion.com/ | Hybrid (Onsite+WFH)

Hiring software engineers across different locations and teams:

-

Tel Aviv:

Back End (Go) developer: High-performance edge ad auction systems

Data Scientist: Multiple ML and AI initiatives (internal systems as well as client-facing)

-

Montreal:

Data Engineer: Advertising (big data, for real!) data processing systems

Back End (Python) developer: Working on a (tastefully-designed) set of python transactional microservices serving the core business web application and APIs

-

If you see yourself as a good fit for the roles in the above locations, please browse the job descriptions on our web site ( https://perion.com/careers/ ) and reach out to me directly - my contact info is in my HN profile bio.

Kaedim | Software Engineer, Machine Learning Engineer, Customer Support Engineer, Product Manager, Founding Recruiter | Onsite | Full-time | San Francisco, Singapore, London | US & UK Sponsorship Available Kaedim is an AI startup building ML algorithms that turn images into digital 3d models. We are a group of ~10 looking to grow the team to help streamline 3d content creation for 3d artists and are already working with 1 of the top 10 games of all time! Using our AI and in-house art team, we have the most accurate, game-ready 2d → 3d asset generation pipeline. Currently, we are offering a 10x speed up to 3D asset creation pipelines of 200+ game developers and we are working with partners like Voodoo, Upland, Azra Games.

Check out our demo here: https://www.youtube.com/watch?v=tlQWFG1DLb0

Job descriptions and application link: https://join-kaedim.notion.site/

Tech Stack:

Product (web app, API): React, MySQL, NodeJS, Python, AWS

Machine Learning: Python, PyTorch, AWS

Alembic | San Francisco, United States | Full-time | Onsite

Alembic is solving marketing's hardest problem: proving what actually works. If you're looking for frontier technical challenges at an applied science company, this is the place. We’re building trusted systems that Fortune 100 companies use to make multimillion dollar decisions. We work together 5 days onsite in SoMa.

We’re rapidly scaling our full engineering and GTM teams. We’re especially motivated to hire for these roles right now:

1. Enterprise Sales Engineers 2. Senior Full Stack Engineers (Typescript/Node.js) 3. Data Engineers 4. Python Developers for AI/ML

Link--> https://jobs.ashbyhq.com/alembic?utm_source=G4mXVAg728

Zeven | Senior Backend Developer | ONSITE in Zurich (Switzerland) | Full-time | Competitive salary + stock options We're a newly-founded and well-funded startup that is seeking to revolutionize the sports industry with AI-powered solutions. Our mission is to unlock human potential and redefine the sports experience through innovation and technology.

We are looking for an experienced Senior Backend Developer and sports enthusiast to join our on-site team in Zurich, Switzerland. This is a hands-on, high impact role. We use Typescript for web, Python for ML, PostgreSQL, React + TanStack, AWS and SST.

Please see the Full Job Description [https://tinyurl.run/zeven] for requirements and more details about our Tech Stack.

We are offering full-time employment with a competitive package:

• Competitive salary and stock options.

• Pension plan bonus and 25 days of paid vacation plus public holidays.

• Charming office next to the lake of Zurich with fully-equipped kitchen.

• Top-notch equipment (MacBook Pro laptops, standing desks, etc.).

• We love to organize company outings and sport events.

If you're a motivated and experienced backend engineer who is crazy about sports and looking for a new challenge, we'd love to hear from you! Please email CVs to alex@zeven.ai

We do not consider remote candidates, agencies and candidates located outside the EU/UK/EEA/Switzerland

DESY | Scientific AI | Hamburg, Germany | HYBRID | 2-year positions | Full-time

DESY is one of the world's leading research centers and is now building a dedicated AI team for high-profile European projects.

Hiring for two positions:

-- Scientific AI Expert: Process Optimization: GPU optimization for AI/molecular dynamics, HPC drug development projects. Requirements: Strong C++/CUDA/Python, TensorFlow/PyTorch, HPC/parallel computing experience. https://v22.desy.de/e67416/records288699/index_eng.html

-- Scientific AI Expert: Data Curation & Training: Dataset curation and ML pipeline development. Requirements: Data engineering, large-scale data handling and LLMs/generative AI experience. https://v22.desy.de/e67416/records288695/index_eng.html

Work environment:

-- International research campus

-- Hybrid setting, up to 50% remote work

-- Flexible hours

-- Secure public employment and comprehensive benefits

Application must be done through the formal links provided. Feel free to ping me through HN if you have experience in generative models or heterogeneous graph NNs.

ThreatMark | Security, Machine Learning | REMOTE(World) / Brno, Czech Republic | Equity ThreatMark protects >50M end users from finacial fraud and saves > $100M every year in losses. We are working with top banks in EU and US to protect their end users.

We develop large-behavioral models that recognizes returning users by their mouse movements, keystroke timings and sensoric data (accelerometer, gyroscope). We detect cyberthreats (e.g. malware, phishing, scraping) by exploiting browsers/sandboxes of devices. We manage ~PB scale of data and provide realtime scoring in milliseconds driving authentication/authorization flow (2nd factor).

Stack: [python, typescript, rust], [redis, postgresql], [aws, terraform] ...

We are looking for exceptional engineers to build with us and be part of the success:

- Research Team Lead [hands-on role] (leading world-class ML engineers to success - focus, context translation, project management, measurement, ...)

- Engineering Team Lead [hands-on role] (structure, organize, help, elevate) - lead of team dealing with backend - low tail latencies, distributed systems, petascale

- DevSecOps Engineer (blue team - designing, implementing secure infrastructure)

- Product Manager (self driven, tech-enabled go-getter - expert on fraud and/or scaling a startup from product perspective)

- DevOps Engineer (IaaC in AWS)

We are also looking for other key roles:

- Chief Revenue Officer - be responsible for growth in US & EU

If you are interested, please email us @ career@threatmark.com with subject "HN Who's Hiring" If you don't find the right role here or at https://www.threatmark.com/careers/, write us anyway if you believe you can be good fit :)

Krystof Hilar, Co-Founder & CTO

Chime | Engineering Manager & Staff Engineer, Machine Learning Platform | Hybrid (SF | Chicago) | Full-time

At Chime, we’re building the ML platform that powers real-time decisions across fraud, risk, personalization, and growth. We’re hiring for both an Engineering Manager and a Staff Engineer to help lead and grow this critical part of our infra.

As an Engineering Manager, you’ll lead a small, high-leverage team building scalable systems for model training (batch + real-time), low-latency serving, feature pipelines, and observability. As a Staff Engineer, you’ll be hands-on shaping architecture, driving deep technical decisions, and mentoring others across the org. Our stack includes Kubernetes, Airflow, Spark, Ray, and SageMaker, and we support hundreds of models in production. You’ll work closely with DS, Infra, and Risk to make ML faster, safer, and easier to use across Chime.

If you’ve built platforms for ML or data teams, have strong systems thinking, and care about both developer experience and scaling impact—we’d love to chat.

Engineering Manager: https://careers.chime.com/en/jobs/7857735002/engineering-man...

Staff Engineer: https://careers.chime.com/en/jobs/7940342002/staff-software-...

Downtown Music | AI Engineer | Remote (US)

Downtown Music serves 50+ million music assets globally. We're looking for our first AI Engineer to pioneer AI solutions for music rights management at scale.

What You'll Build - Systems processing millions of music transactions and royalty calculations - Scalable LLM/ML prototypes for complex music industry challenges - Production AI integration across our global infrastructure

Requirements - Production distributed systems, APIs, data pipelines at scale - AI/ML beyond tutorials—LLM fine-tuning, embeddings, model serving - Full-stack: Python, JavaScript, databases, cloud infrastructure - 0-to-1 development from concept to production

Standout Experience - High-volume AI data processing systems - Real-time AI applications or streaming pipelines - AI deployment tooling and monitoring

Why Join First AI Engineer = direct our AI strategy and set technical foundation. Unprecedented influence, minimal constraints.

Remote across 15 US states, competitive comp & benefits.

Apply: <https://grnh.se/bfmemyp92us>

Voltquant(https://www.voltquant.com/) is building an AI-powered platform for engineering firms, utilities, and infrastructure companies. We help teams process technical data more efficiently, automate complex workflows, and make informed decisions using AI.

We’re seeking engineers who want to build real-world AI tools that address industry challenges—working with data from large-scale infrastructure to ML-powered document intelligence.

Tech Stack: Next.js | React | TypeScript | Tailwind

Open Roles: • Front End Engineer (Hybrid, London) • (x1)

Interested in applying AI to built-world challenges? Email jobs at voltquant dot com with your CV and two examples of projects you’re most proud of.

Layer Health | https://www.layerhealth.com/ Our team/engineers are incredible! Take a look at their backgrounds: https://www.linkedin.com/company/layerhealth/people/

Work Location: HYBRID in Boston or NYC (downtown) Headcount: ~30, hiring 2-3 per month

Stack:React / Typescript / Python / GCP

Open Roles (all roles require a MINIMUM of 6 years of work experience) * Data Infrastructure Engineer * ML Infrastructure (Staff+) Engineer * Research Scientist (PhD's) * Head of Product * Data Engineer with HL7 or FHIR / healthcare data experience

We Offer: * competitive base salary + equity + great health/medical benefits * unlimited PTO * collaborative engineering-first culture, in office 2-3 days per week in Boston and NYC offices

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!

Hellas.AI | Remote | Full Time or Contract | https://hellas.ai

Hellas.AI is building a compiler for categorical deep learning to power decentralised, serverless AI.

We're looking for an experienced Rust engineer. You must have demonstrated:

* Experience in designing and implementing BFT consensus protocols * Ability to engage with academic literature on distributed systems * Understanding of ZK proofs and proof aggregation (you don't need to design these, but you should know how to use them)

Nice-to-have: interest or experience in:

* Deep Learning / ML / AI, GPU programming * Compilers and array programming languages * Category Theory and string diagrams

If you have project(s) demonstrating your experience in one or more of these areas, get in touch!

Our process is simple: we read code you've written and research you've published, then interview you about it. We don't do tedious coding tests.

Email us at hello@hellas.ai

Stealth dev tool startup | Founding product/systems/ML engineer | Onsite San Mateo | Up to 200k + 1% equity

Coding velocity has increased with AI agents, but shipping velocity has worsened in engineering organizations of 100+. The root cause is new bottlenecks that have emerged in DevSecOps with 5x increase in code and manual processes in shipping. We are building DevSecOps agent to better orchestrate the 20+ tools devs use weekly.

3 founders, each with 10+ years building in successful dev tool or AI startups. Top tier investors. More details at https://jobs.gem.com/accelos

Connie Health | https://www.conniehealth.com/ | Multiple engineering roles | Hybrid (Boston, MA) | Full-time

Connie Health is a fast-growing healthtech startup on a mission to empower older Americans to make confident, worry-free Medicare plan decisions. We offer a tech-enabled Medicare navigation platform that combines an AI-driven technology with local Medicare experts to help people select optimal healthcare plans and navigate their benefits. Our culture is mission-driven, collaborative, and innovative, as we strive to transform healthcare through data-driven insights and personalized guidance.

We are building a two-sided marketplace, connecting older Americans looking for health insurance with local Medicare agents.

We are looking to fill multiple positions on our rapidly growing engineering team, based out of Boston, MA:

Senior Backend Engineer (Call Infrastructure) | $130,000 - $156,000 + Equity

Responsibilities: Lead the development of our Twilio-based calling + messaging infrastructure, enabling seamless communications between Medicare agents and customers. You must have significant experience with Twilio. Tech Stack: TypeScript + NestJS, Twilio / Five9 / Zoom, Postgres, AWS, Docker + Kubernetes

Lead AI/ML Engineer | $152,000 - $182,000 + equity

Responsibilities: Player-coach role, leading a small team of AI/ML and software engineers to build our top-of-funnel systems. Tech Stack: Python, "traditional" AI/ML model building tools (scikit-learn, PyTorch, XGBoost), open source LLMs, AWS, Aurora/Postgres, Redshift

Senior Backend Engineer | $130,000 - $156,000 + equity

Responsibilities: Build the core backend systems that power our top-of-funnel, such as tracking leads through various channels, integrating with affiliate partner marketplaces, working with AI/ML engineers to build our lead bidding models, dynamically mapping leads to agents, and AI-based lead pre-qualification. Tech Stack: TypeScript + NestJS, Postgres, AWS, Docker + Kubernetes

I am Huan, CTO at Connie Health. If you are interested, please feel free reach out to me directly at with your resume: huan.lai (at) conniehealth.com !

Swayable | https://www.swayable.com/ | SF, NY, Remote | Full-Time

Swayable measures how content changes people's opinions. We apply a variety of sophisticated machine learning classification, regression, causal AI, and GenAI-based analyses to survey-based data we collect. Customers receive high-level, actionable data about different group's responses through an ever-expanding portfolio of web-based visualizations, reports, and natural language interfaces.

All positions support remote US work or SF/NY office.

- Senior Engineer: AI Applications. AI Applications Engineer that blends full stack software development expertise with agentic/multi-node workflow architectures. You will be responsible for creating and building our portfolio of LLM-based classification, reporting, and analysis applications. Stack: Python (langgraph, pandas, celery, flask, MCP), JavaScript (Vue.js, Node.js), MongoDB, GraphQL, and a variety of LLM providers.

- Senior Engineer: Full-stack Web. Full-stack web to build and enhance our core browser-based applications for building surveys, collecting responses, and visualizing results generated by our suite of sophisticated numerical and qualitative analyses. Stack: Vue 3 (Nuxt), Tailwind CSS, Node (Express), GraphQL, Mongoose, MongoDB, Cypress.

- Senior AI/ML Engineer: Scientific Computing. Blending Python software development expertise with scientific computing, machine learning, and AI experience to advance the state of the art analytics engine that powers our core product. Stack: Python (Numpy, Pandas, scikit-learn, Celery, Flask), machine learning (linear regression, casual AI, text classification), MongoDB, and GraphQL.

Postings are available at https://www.swayable.com/careers/ or free free to contact me (the hiring manager) at eng-jobs@swayable.com

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: Other than interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field, plus preferably 3+ years of work experience or a Masters or PhD in lieu of work experience. (Roughly 30% of our staff have PhDs.)

Technologies: Mostly C++23, Qt 6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and other projects use Python, some use Java or Javascript/Typescript/React.

Apply online at https://www.stellarscience.com/careers/.

Apollo Agriculture | Full Stack Software Engineer | Full-time | Amsterdam, NL | https://www.apolloagriculture.com/team Apollo Agriculture (YC F1) is bringing modern farming to the world's poorest farmers. Millions of farmers globally don't have access to the basic resources the rest of the world depends on for food production: good seed and fertilizer. We sell these on credit, use ML to figure out who we can lend to profitably, and are growing rapidly (two countries and growing).

We are a small, motivated team with SV roots and an ownership culture. Come help us make a real difference in the world!

Our core engineering team supports a wide range of tools and processes. Our primary stack is Scala 2 w/ cats, backed by psql. If you are an experienced and practical problem solver, we'd love to meet you.

... due to our size and focus, we look for candidates who are experienced and can be autonomous -- at least at the "senior" level. Visa sponsorship is possible!

Drop me a line at elijah@apolloagriculture.com if you're interested; I'm happy to chat.

Nomi.ai | Senior Machine Learning Engineer | Remote (Global) | Full-time | $150k–$250k + equity

At Nomi, we're building AI companions that form deeply meaningful, humanlike relationships and immersive roleplaying experiences. With over a million users growing at ~10% month-over-month, your work directly impacts millions of lives. Our users tell us we've helped them find self-worth, leave unhealthy relationships, try therapy, and even save their lives. See countless real user testimonials here: https://nomi.ai/spotlight/ and our recent news coverage here https://www.cnbc.com/2025/08/01/human-ai-relationships-love-...

As an ML Engineer or Senior ML Engineer, you'll lead innovation in large language model (LLM) post-training, retrieval augmented generation (RAG), and agentic capabilities, directly shaping how users connect with our AI.

We offer:

    * Full autonomy to experiment and deploy cutting-edge ML techniques
    * A fully remote, async culture emphasizing results over meetings
    * International team with visa sponsorship available
    * For US employees: 401k (100% match up to 5%), fully covered health insurance, equity

Great to haves:

    * Extensive hands on experience with things such as multinode training, rlhf, knowledge distillation, test time compute, rag
    * Up to date with SOTA in LLM post training (would love to hear what research paper you think is or would be most impactful for our roadmap!)
    * Genuine passion for our product, finds the idea of engaging with our community on Discord/Reddit to be a pro (it is a very different experience than developing enterprise software!)
    * A high internal bar for excellence and relentless drive

To apply, email alex [at] nomi [dot] ai with HN in the subject line.