CVector | Full Stack Software Engineer; UI/UX Designer | USA | REMOTE | Full-time | $75k/yr + 0.3% – 1%

CVector builds software to make energy systems smarter, more reliable, and autonomous. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments. You'll help create intuitive, robust web apps and backend systems, shaping tools that directly impact industrial operations and energy reliability.

Remote-first team with occasional domestic travel to connect with users directly. Recent graduates may need to relocate.

Full Stack Software Engineer: We're looking for a passionate Full Stack Software Engineer comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, Kafka, TimescaleDB, PostgreSQL, AWS).

UI/UX Designer: Explore the solution space for how users will interact with our app, and help us communicate more clearly with our customers and investors.

Reach out to me at Email is hidden

Graphite | Mid-level & Senior Software Engineers| New York, NY in our Soho Headquarters | https://graphite.dev

We’re building Graphite to help high-performing engineering teams run faster, cleaner code reviews. Our product is already used by some of the world’s best developers, and we’re just getting started! We're hiring experienced engineers across the stack, are are looking for people who:

-Care deeply about code quality, system design, and scaling software responsibly

-Have a strong product sense and enjoy collaborating closely with design & product teams

-Have experience with AI-driven workflows, prompt engineering, or interest in developer tooling is a plus

-Are product-driven and quality-obsessed; we ship thoughtfully and often

We've recently raised a $52m Series B by Accel, A16z, & others, and have big goals this year.

The hiring process: quick intro call, 2 technical interviews, & an onsite interview, followed by offer!

If you are someone who wants to work on meaningful problems, values clean code and thoughtful systems, & loves building tools for other engineers, we'd love to chat with you!

You can apply directly on our careers page(https://graphite.dev/careers#positions) or email Email is hidden with the subject title: "Thank you for stacking with us) with a copy of your CV.

Recruiters: appreciate your hustle, but we’re only hiring through direct applications.

Levels.fyi | Backend & Frontend Engineer | Remote (India, Open to other countries) | Full-time | https://www.levels.fyi | $30-50k USD

Levels.fyi's mission is to help every professional build a better career through the most accurate insights and services. We're building the future of compensation & hiring by centering ourselves around professionals.

You'll be joining a close-knit team of 4 engineers to work across our product verticals. You'll have the opportunity to lead and own new projects / initiatives from idea to production end-to-end (architecture to deployment). We move fast and have come an incredibly long way on a tiny team. We're looking for a self-starter and resourceful engineer with strong communication skills and experience building things from scratch.

Backend: https://levelsfyi.notion.site/backend-software-engineer-14f8... Frontend: https://levelsfyi.notion.site/software-engineer-frontend-1e3...

Myndstream | Hybrid London, UK | Full time | https://myndstream.com

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers to create validated music to improve health and wellbeing.

We are on course to enhance the effectiveness & efficacy of our music through the use of ML. We've started with hospitality as a launchpad and are now moving into healthcare markets.

Core Stack: TypeScript, Rust (for low-level audio work), React, PostgreSQL, WebSockets, GCP

If you are enjoy ownership, autonomy, design patterns and are a pragmatic generalist then you will enjoy it here.

Hiring Founding Software Engineers in London, UK, - contact me via email: Email is hidden

Jane Street | Hybrid | Full-time

If you haven't heard of us before, we’re a quantitative trading firm that cares a lot about technology. This means building elegant solutions that scale well, never assuming that “best in market” is the same as “best possible,” and ensuring everybody has the resources needed to do their jobs well.

We're looking for folks in New York, London, Hong Kong, and Singapore for a variety of roles including, but not limited to:

- Data Engineers who can help us understand, clean, manage and share the data that guides our trading. At Jane Street, having a thorough and accurate understanding of data is at the core of everything we do -- https://www.janestreet.com/join-jane-street/position/6558007...

- Machine Learning Engineers with robust experience in machine learning and strong mathematical foundations. Machine learning is a critical pillar of Jane Street's global business. Our ever-evolving trading environment serves as a unique, rapid-feedback platform for ML experimentation, allowing us to incorporate new ideas with relatively little friction -- https://www.janestreet.com/join-jane-street/position/6485460...

- A Machine Learning Educator who will be instrumental in maintaining and growing our ML educational programs and classes, spanning topics such as an introduction to general ML, efficient use of AI assistants, our internal stack for training models, and how to reason about performance -- https://www.janestreet.com/join-jane-street/position/8056588...

- Software Engineers who are intimately tied into every area of our business. We are big believers in functional programming, using OCaml, a statically-typed functional programming language, as our primary development language. We also believe in the value of open source software, using it in our daily work and releasing hundreds of thousands of lines of our own code as open source -- https://www.janestreet.com/join-jane-street/position/4274288...

- Frontend Software Engineers who are passionate about user-interface design and typed functional programming. You would take part in the design and implementation of our next-generation of browser-based tools for operating our trading infrastructure -- https://www.janestreet.com/join-jane-street/position/6184529...

- A Programmer-Who-Writes, or a Writer-Who-Codes -- https://www.janestreet.com/join-jane-street/position/7604415...

Yuma.ai (YC W23) | Senior Full-Stack AI Engineer | Remote (Europe) or Hybrid (Barcelona) | Full-time Ruby + AI Agents = Yuma

Yuma is building a complete orchestration platform that deploys autonomous AI agents dedicated to customer support in e-commerce. We are one of the leaders in this space and we offer one of the most advanced platforms to date, supporting over 100 paying customers. Our agents replicate human capabilities by taking actions and retrieving information from external services as needed.

Our top merchants automate over 80% of their support tickets through Yuma.

Yuma was founded by Guillaume Luccisano, a 3rd time YC founder, and now boasts a team of 18 highly dedicated, talented people driven to deliver the best value to our customers through AI.

Learn more & apply here: https://yuma.ai/work-at-yuma

Elicit | San Francisco + remote (US timezones) | https://elicit.com/careers

Elicit is an AI research assistant that uses language models to help researchers figure out what’s true and make better decisions. We scaled to >$6MM annual revenue and 450k MAU fast. We're hiring for multiple roles and are primarily interested in people with early-stage company experience, who are comfortable in high-agency, fast-paced teams.

Reasons you might want to join Elicit:

1. We have been thinking about how to apply AI for high-stakes knowledge work since even before GPT-1. Elicit was spun-out from Ought (https://ought.org/) which was an applied research lab.

2. If you're concerned about the potential downsides and risks of super-powerful AI: so are we! Happy to explain more of this story on a call, or you can also check e.g. https://ought.org/updates/2022-04-06-process for a primer.

3. We like spending time with each other, and have get-togethers every 6 weeks, but we're flexible on location.

Reasons you might not want to join Elicit:

1. We've found a level of product market fit (as evidenced by metrics) but we've not proven everything out yet. If you want predictability, Elicit is not for you.

2. We aim to hire people who thrive in low-bureaucracy environments, and let them loose. If you need structure, lots of support, close mentorship, or tightly-defined work assignments, Elicit is not for you.

A selection of open roles—more on the site:

• Machine learning engineer: https://elicit.com/careers?ashby_jid=913a03d5-bd26-4c64-8346...

• Our first data engineer: https://elicit.com/careers?ashby_jid=4617f630-f971-4716-b753...

• Front-end engineer: https://elicit.com/careers?ashby_jid=b5e218b8-8730-4254-b026...

ZipFit | Staff Software Engineer | REMOTE | Full-time | $140K-180K

ZipFit is building the future of fitness studio management with an AI-powered, all-in-one platform for fitness businesses. Our platform streamlines operations, boosts client retention, and provides operational analytics. We are a product-obsessed team creating the next generation of software for a passionate industry eager for change.

We're seeking a Staff Software Engineer to be a core member of our engineering team. You will own critical systems, designing and deploying robust, scalable, full-stack solutions - from the UI to the database and infrastructure.

You'll work on products like: CRM and Member Management, Web Hosting Infrastructure, Email & SMS Marketing, Events, Classes, and Appointment bookings, and a Member App (PWA).

Our stack: * **Backend**: TypeScript, Node.js, NestJS, Remix * **Frontend**: TypeScript, React, Tailwind * **Infrastructure**: Amazon Web Services (AWS)

We're looking for someone with: * 8+ years of software engineering experience and a portfolio of shipped products. * Proficiency across the stack, with deep expertise in TypeScript, Node.js, React, and AWS DevOps. * An architectural mindset, understanding design patterns and building for scale. * Extreme ownership, thriving in an autonomous environment. * A pragmatic approach, balancing speed with quality.

Please send resume to kerry, the at symbol, joinzipper.com

Archera | Senior Data Engineer | REMOTE (US/Canada) or Hybrid (Seattle) | Full-time

Archera empowers organizations of all sizes to optimize their cloud costs through unique, short-term, insured GRI (Guaranteed Reserved Instance) and GSP (Guaranteed Savings Plan) commitments.

We’re looking for a Senior Data Engineer to build and scale the data backbone of Archera’s cloud cost optimization products. This role focuses on architecting large-scale data pipelines that process cloud billing and usage data across AWS, Azure, and GCP. You’ll work across OLTP and OLAP systems to ensure our data infrastructure is performant, reliable, and purpose-built for FinOps. Your work will enable accurate cost modeling, insights, and automation that directly power Archera’s cloud rate insurance platform.

Stack: Python (SQLAlchemy, Flask), TypeScript (React), PostgreSQL, Snowflake, Argo Workflows, k8s, AWS/GCP/Azure

Benefits: RRSP/401k match, healthcare, stock, wework/home office expenses.

Apply: https://job-boards.greenhouse.io/archera/jobs/4788177008 and email me at simon+hn <at> archera <dot> ai

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