Datadog | Software Engineers | ONSITE (Boston, Lisbon, Madrid, NYC, Paris, Tel Aviv) | Full-time

Datadog is a monitoring, tracing, logs system, and more, for your infrastructure and services. We build our own tsdb, event store [1][2], distributed tracing tools, cutting edge visualizations, and more. We love shipping great experiences for customers just like us and are growing fast! We write a lot of Go, Java, Python, Typescript (with React), and a bit of other languages. We run on k8s, and are multi-region and multi-cloud.

We're looking for people who can build systems at scale as we process trillions of events per day. Let us know if that's you!

https://dtdg.co/hnwhoshiring

[1] https://www.datadoghq.com/blog/engineering/introducing-husky

[2] https://www.datadoghq.com/blog/engineering/husky-deep-dive

thelab | Istanbul, Turkey | Senior Frontend Developer, Senior Backend Developer, Analytics Tag Management Specialist | http://thelabnyc.com | Full-Time

We're hiring several roles in our Istanbul office. The Istanbul team works remotely, but we do have an office in Suadiye where the team meets up once a month or when in person collaboration is helpful. I oversee our Istanbul team, and they report directly into our Engineering or Analytics team based in the US.

We're headquartered in New York, with a smaller team in Istanbul focused on software engineering. Our focus is on design and development of custom e-commerce solutions for DTC orgs within enterprise companies, with additional emphasis on test-and-learn strategies that help us improve the customer experience and inform our technical roadmap.

To apply, please submit an application to the appropriate role in the links below.

Sr. Frontend Developer: https://thelabnyc.bamboohr.com/careers/203

– Strong experience with Sass. Experience with React component styling and/or building reusable styling frameworks. Experience with Typescript andcomfortable with building React components.

Senior Backend Developer: https://thelabnyc.bamboohr.com/careers/188

– Experience with Python for back-end web development. Django or similar libraries/frameworks. Interest in learning devops technologies like Gitlab CI, Docker, Kubernetes, Linux, ect. Modern Javascript for frontend development, Typescript, React+Redux

Tag Management Specialist: https://thelabnyc.bamboohr.com/careers/202

– Own the end-to-end design and governance of data collection and analytics infrastructure (e.g., GTM, GA4, Triple Whale, CDPs). Implement pixel and event tracking (client- and server-side) across platforms such as Meta, Google Ads, and Shopify, working closely with developers when necessary

ResiQuantAI | San Francisco, CA | US Based | Resiquant.ai | Onsite, Fulltime

ResiQuant is a mission-driven startup building the future of property risk intelligence—where every building can be accurately assessed for disaster resilience, at scale. We’re solving one of the toughest problems in climate risk: the lack of reliable, standardized, and dynamic data on the built environment. Our work is critical in a world where wildfires, earthquakes, and hurricanes are escalating in frequency and impact. Empowering insurers, financial institutions, and asset managers, our AI-powered systems combine cutting-edge machine learning with deep structural engineering expertise. The result: precise, actionable insights that close critical data gaps and drive smarter decisions.

Backend Product Engineer: -Architect and maintain backend systems that support AI-driven property risk intelligence at enterprise scale - Own end-to-end development of backend features, from design through deployment - Design and implement scalable APIs, data pipelines, and model-integrated services to deliver real-time, high-reliability insights used by Fortune 500 insurers - Collaborate cross-functionally with engineering, product, and customer stakeholders to build and iterate on impactful features - Ensure backend systems are observable, reliable, performant, and ready for production at scale - Evaluate user and customer feedback to inform product iterations and backend improvements - Minimum of 3 years of backend engineering experience with ownership of production systems - Hands-on experience developing in modern backend stacks (Python experience is a plus) - BS or above in Computer Science/Engineering and at least three years of applicable industry experience

Forward Deployed Engineer: Act as the technical liaison between the company and enterprise insurance customers, leading engagements from initial discovery through full-scale implementation - Collaborate directly with underwriters, executives, and IT teams to deliver AI-driven solutions that transform risk assessment for wildfire, earthquake, and hurricane exposure - Architect and implement custom APIs, integrations, and automations that connect customer systems with ResiQuant’s platform - Travel to customer sites across the U.S. to conduct workshops, lead technical deployments, and ensure successful adoption of the platform - Train and onboard underwriter teams, supporting workflow integration and long-term platform usage - Serve as the voice of the customer, translating needs and feedback into product roadmap priorities - Develop internal tools and automations to streamline future implementations and scale delivery - Minimum of 3 years of software engineering or technical implementation experience, with strong communication and customer-facing skills - Hands-on development experience, particularly with APIs and systems integration (Python proficiency is a plus) - BS or above in Computer Science/Engineering and at least three years of relevant industry experience

Please send your resume to: jordan@resiquant.ai

Clerq | Staff Software Engineer, ML Engineer | onsite 3 days (NYC) | https://clerq.io Clerq is a New York City based fintech startup building a next generation platform payments platform that delivers a seamless checkout experience for high-ticket transactions. By leveraging modern bank rails, the platform offers the conversion and UX benefits of cards with risk and money movement infrastructure purpose-built for large purchases. Clerq replaces outdated manual payment methods like cash, checks and wires and expensive card surcharges with a smooth, integrated solution that helps merchants convert more customers without sacrificing margins.

We have started with the $1T+ U.S. auto vertical, where our platform is growing rapidly and already powering payments for several of the most recognized brands in the industry including multiple Fortune 500 companies. With proven traction, the company has expanded into high-growth adjacencies including high-ticket e-commerce, private travel and powersports.

We currently have two open roles in Engineering and are looking for engineers excited to help bring high ticket payments into the 21st century:

- Staff Software Engineer to help build out + scale core payment automation stack

- ML Engineer / Data engineer to focus on payment risk modeling.

Stack: Python/Django, Remix React, AWS Comp: $180-220k + Equity

Email me at nick@clerq.io if you are interested in hearing more!

BetterBrain | Software Engineer | Remote (USA)

About BetterBrain BetterBrain (https://www.betterbrain.com) is at the forefront of dementia prevention. We offer the most comprehensive platform to help our members prevent neurodegenerative diseases and optimize their cognition. Role Overview We're rapidly growing and are seeking a talented Software Engineer to join our team and help shape the future of preventative neurology. As a full-stack engineer with experience in high-growth startups and building AI products, you’ll play a key role in our development.

Key Responsibilities Develop and maintain web applications using our tech stack: NextJS, React, Typescript, and Supabase. Collaborate with cross-functional teams to design, develop, and implement new features.

Requirements 4-5+ years of full-stack development experience. Proven experience in high-growth startups. Strong background in building AI products. Proficiency in NextJS, React, Typescript, and Python. Excellent problem-solving skills and attention to detail.

How to Apply Email us at adi@betterbrain.com with the subject line "HN Hiring". Please include: - A copy of your resume. - A brief description of why you think you’re a good fit for this role (for example - a project you owned) Join us at BetterBrain and help us build a healthier future.

Improving South America | REMOTE (LATAM) | Full-Time,

- Node + TS + AWS Developer - SR.

- Database Engineer - SSR/SR.

- Fullstack Engineer: Python + TS + AI - SR.

- Data Engineer w/ Snowflake - SR.

- Node.js Developer - SR.

Apply here: getonbrd.com/companies/improving - or follow us on LinkedIn

krea.ai | Distributed Systems Eng. & Data Engineers | San Francisco (on-site), CA

I'm the cofounder & CTO of Krea (https://www.krea.ai). We are a startup in San Francisco building browser-based AI creative tools to improve the workflows of artists, designers, and professional creatives. Small team (~22); millions of active users; and raised over $83M from top Silicon Valley investment firms.

We're looking for talented engineers who want to tackle hard technical challenges with smart people while building a creative platform that big companies and startups will rely on.

The job:

- Build distributed systems to process massive (billions of files, petabytes), amounts of image, video, and 3D data, solving scaling bottlenecks as you go.

- Learn ML engineering from world-class researchers on a small tight-knit team. You’ll contribute to foundation image, video, and world models from 0 → production, and see them used by millions.

- Play with huge Kubernetes GPU clusters; our main GPU cluster takes up an entire datacenter from our provider.

Tech stack: python, pytorch, k8s, a rotating cast of data tools (e.g. DuckDB, massive relational DBs, PyArrow, etc.)

You should apply if you are an excellent generalist engineer with strong backend experience and an intuition for systems design. Bonus points for experience with dist. systems, k8s, and existing ML or data experience (but not required!). Cool side projects are a green flag.

A few links about us:

- Sneak peek of our real-time video model → https://x.com/krea_ai/status/1961074072487620635

- Technical report for FLUX.1 Krea, our first open-source text-to-image model → https://krea.ai/blog/flux-krea-open-source-release

You can contact me at:

  d+hn@krea.ai

9 Mothers Defense | Robotics Eng. & Computer Vision / Data Scientist | Hybrid (Austin TX) | Full-time

Building AI-driven turrets that stop hostile drones. We need sharp, hands-on engineers:

Embedded Robotics: Python on Jetson, CAN (+ EtherCAN / EtherCAT) drive buses, high-speed cameras, real-time PID/servo control, ROS, TensorRT

Computer Vision / ML: detection + tracking, transformer-based visual models, TensorRT tuning on Jetson

US persons only (e.g. green-card, citizens). Shoot your résumé / GitHub and a quick note on why you're good fit to jobs@9mothers.com

Artificial Analysis | https://artificialanalysis.ai | Full Stack Engineer, ML Engineer, Member of Technical Staff | Onsite in San Francisco or in Australia/New Zealand | Competitive Salary + Equity

Artificial Analysis is an independent AI benchmarking and insights provider. We benchmark AI to help engineers and companies understand AI and make informed decisions regarding which AI technologies to use. We are fast growing with a team of 20 and have backing from investors including Nat Friedman, Daniel Gross & Andrew Ng.

We are hiring for four roles: 1. Full Stack Engineer: Full Stack Engineer to support our benchmarking of AI and with communicating these benchmarks to our users. Proficiency in Typescript & Python required. Familiarity with LLM APIs preferred. Tech stack: Javascript/Typescript, Node.js, React/Next.js, Python.

2. ML Engineer: ML Engineer to support our benchmarking and evaluation of AI software stack. You will design and run benchmarks and evaluations of different AI models. Strong analytical skills and proficiency in Python required.

3. Member of Technical Staff: You will design evaluations of different AI models and work to translate technical insights to analysis that helps companies navigate AI.

4. Product Manager (AI Media Generation): You'll work closely with us to develop and enhance our media generation (Image, Video, Speech, Music) arenas and leaderboards, contributing to product strategy and execution at the intersection of creativity and AI.

Apply at hiring (-at-) artificialanalysis.ai with your resume, github and dot points on relevant experience (including anything you've built). Add | HackerNews to email subject line.

Nova Credit | Remote (US, Canada)

We're building a unified platform for credit and financial data to power financial inclusion globally. Our mission is to unlock economic opportunities for consumers historically excluded from traditional credit systems by transforming diverse data into actionable risk insights. We are YC company backed by investors from Canapi Ventures, Kleiner Perkins, General Catalyst, and Index Ventures

-> Hiring software engineers from Mid-Level to Staff

-> Tech stack: Node.js, React, TypeScript, Python, PostgreSQL, AWS

You'll work on enterprise-grade APIs, data integrations, advanced analytics, and seamless user experiences. We're looking for engineers who thrive in fast-paced environments and want to make a meaningful impact on financial inclusion.

Apply at https://jobs.lever.co/neednova/ and mention HN.

CredCore | Engineering | Full-time | Remote/Onsite | www.credcore.com

CredCore helps companies analyze Credit Agreements using AI. We have two roles open: (1) Engineering Lead, and (2) Front-end Lead/Architect. Both positions require 10 years of experience. You should be familiar with design patterns and software architecture, and TypeScript AND Python. We prefer candidates based in the US or Europe for both roles (for time zone reasons), but can consider other locations as well. If based in India, we'd like you to join our Pune office.

If you’re interested, please email careers@credcore.com. A cover letter is not necessary. But please share your resume and links to your GitHub/GitLab/StackOverflow/other profile, or blog/papers, or other portfolio we can review before setting up the interviews.

Chroma | ONSITE - San Francisco | Full-time | https://trychroma.com

Chroma is the open-source search and retrieval database for AI applications. It's an open-source database with vector, regex, and full-text search. We support local, single-node, and cloud hosting. Help build the future of context engineering!

We're a team of 17, all engineers today. We work in Rust, Python, Typescript, and Go.

We're hiring for these areas:

- Product design

- Production engineering

- Platform engineering (Rust)

- First GTM hire

Apply here: https://jobs.ashbyhq.com/trychroma/9ed3aee8-07dd-44e3-9ca1-d...

More details at: https://careers.trychroma.com

Valantor | US Hybrid / Remote | Full Time | Python Agent Engineer https://www.joinvalantor.com/agent-engineer

As an Agent Engineer at Valantor, you’ll work hand-in-hand with our customers to design and deploy intelligent agents that solve their most pressing document challenges.

This role is deeply collaborative and applied—you’ll be in the room with clients, understanding their workflows, and translating their needs into working AI solutions. It’s an opportunity to combine technical expertise in Python and prompt design with direct customer engagement, bringing the most advanced AI for unstructured documents into live production environments.

About Us

Valantor is a full-stack AI + humans platform purpose-built for the BPO industry. We’re tackling the hardest problems in document processing—insurance claims, contracts, invoices, and other unstructured files—where today armies of humans still do the work.

Our proprietary AI technology has been in development for more than six years, and we were among the first beta users of OpenAI in 2021, giving us a head start in applying frontier AI to real-world enterprise problems.

Our leadership team has built and exited multiple companies in BPO and enterprise software, with a track record of selling billions in solutions globally.

We’ve raised significant capital, completed multiple strategic acquisitions, and are already generating tens of millions in revenue. It’s a unique chance to help shape a company that blends startup energy with enterprise scale, backed by veteran operators with deep vertical expertise.

VALEO IT Services International | Senior DevOps Engineer | Remote (Romania) | Full-time or Contract

We're looking for a senior DevOps engineer to join our infrastructure team. You will work on developing a Kubernetes-native PaaS with complete developer tooling. Our stack includes Terraform, Terragrunt, Python, Ansible and AWS.

Apply here: https://valeo-it.com/en/career/ and mention HN and dlazarov in the e-mail.

Looking forward to your application!

Multiply | Python + SQL Software Engineer | On-site | Mauritius

We build repricing software that keeps online sellers on top of their competition on 130+ marketplaces.

Stack: Python, Postgres, FastAPI, SQLAlchemy.

Our office is beautifully located in Mauritius. We sponsor visas and handle all relocation/immigration.

Apply: jobs@multiply.cloud

LiquidFi (Miami, FL) | Senior Software Engineer - Solidity + Python | ONSITE | Full-time | https://liquidfi.io

We're reimagining mortgages through blockchain - tokenizing real estate debt to make mortgage investing more transparent, accessible, and liquid. Early-stage, profitable, and moving fast.

THE ROLE: Build smart contracts in Solidity that power mortgage tokenization, develop Python services/APIs connecting blockchain to the real world, and own features end-to-end. You'll wear multiple hats - one minute writing a Solidity payment contract, next debugging a Python API, then optimizing Celery tasks. Small team = big impact.

STACK: - Smart contracts: Solidity, OpenZeppelin, Hardhat/Foundry - Backend: Python (Django, DRF), Celery, RabbitMQ, PostgreSQL - Infrastructure: AWS, Docker, EVM-compatible chains - Integrations: Web3.py

LOOKING FOR: - 10+ years building products with serious Solidity + Python chops - Experience developing EVM-compatible smart contracts - Expert with Django, DRF, Celery - Strong distributed systems & async programming experience - Deep understanding of blockchain fundamentals, DeFi, token standards (ERC-20, ERC-721, ERC-1155) - Bonus: financial services, mortgages, or asset-backed tokens

WHY JOIN: - Own big pieces of the stack from day one - Competitive pay + meaningful equity - Shape the future of real estate finance - Small, passionate team

LOCATION: Miami, FL - onsite required (South Florida candidates welcome)

Apply: talent@liquidfi.io with resume + note about your Solidity/Python experience

Hiring Tech Lead - Backend Engineer - AI Engineer - Staff Frontend – REMOTE LATAM - Tech Lead in San Francisco 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: Based in SF. Remote work with 1 week/month onsite. Lead a senior team, shape product and tech, work closely with founders.

Senior Engineers (Backend, Frontend, AI): Remote across LATAM. Build fast, useful tools. Small, experienced team. Real autonomy and product impact.

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

Apply here: https://tramcase.na.teamtailor.com/jobs

Smarkets (https://www.smarkets.com) | Full Time | Hybrid - Onsite (London, UK), Remote - Indiana, US and Sweden

Smarkets is a betting exchange for sports and political trading that has handled over £37 billion in volume since 2010. Our company mission is to fix the betting industry with the best products and best prices.

We are currently looking for:

Senior Software Engineer - Backend, Distributed Systems, Rust, London, UK - https://smarkets.com/job/41fba25f-0896-46d5-a093-8ebbc9e1624...

Software Engineer - Backend, Python, Rust, London, UK - https://smarkets.com/job/aaaf901f-77c0-4b35-9240-ed4cfa668ba...

Senior Quantitative Developer, London, UK - https://smarkets.com/job/5502cdbe-6246-47ec-890b-2f2817e3cf1...

Dev Ops Engineer - London, UK - https://smarkets.com/job/99823479-fd3a-4720-8090-455394fb63f...

Senior Cloud Infrastructure Engineer - London, UK - https://smarkets.com/job/7ee3a731-acc0-448f-bc61-64429e2ebf9...

QA Analyst - Contractor, Sweden - https://smarkets.com/job/52aad884-0aab-477e-a99c-8a76f38f42a...

QA Analyst - Contractor, Indiana, US - https://smarkets.com/job/494945c5-a687-4ffd-b117-d2f7a1074a8...

Data Engineer - London, UK - https://smarkets.com/job/3499be76-c66b-49eb-b6b8-c2d24fee622...

Founder's R&D Engineer - London, UK - https://smarkets.com/job/a42cba2e-e0e7-42e7-b156-3e56b485435...

Frequenz Energy-as-a-Service GmbH | Full-Time | Berlin/Hybrid-Possible, Germany

We are a technology company developing groundbreaking solutions that help companies to rapidly transition from being passive electricity consumers to becoming fully self-sustaining prosumers, capable of leveraging various renewable energy assets.

We are currently looking for Rust and Python software developers to join us in Berlin.

Our homepage: https://www.frequenz.com

Apply here for Rust: https://www.frequenz.com/jobs/senior-rust-engineer and here for Python: https://www.frequenz.com/careers/senior-python-developer

Feel free to attach links to your code examples from github, gitlab, or the like to your application.

These roles are not fully-remote. These are based in Berlin, with a possibility for hybrid-model, which can be discussed during the course of the interview.

(PS: If you choose to apply, we would appreciate if you could mention that you have come from HN :) )

OnFrontiers | Senior Engineer | Hybrid/Remote | NYC or Baltimore

OnFrontiers is hiring a strong senior engineer with experience programming agents to lead development of our agentic intelligence platform for government contractors.

We're looking for a passionate, curious engineer, who wants to work closely with our founding team and contribute as both a technical expert and a member of the product leadership.

In the role, you'll lead development of our indexing services, LLM integrations and APIs, as well as our SaaS platform, as we continue to scale. The role is hands-on but has the potential to grow into management as the team scales.

Core technologies include OpenSearch, Postgres & PGVector, Go, Python and React, all running on AWS.

https://www.onfrontiers.com/job-postings/lead-engineer

Interested, feel free to email me directly: lgsilver[at]onfrontiers.com