CoPlane (https://coplane.com/) | Founding Software Engineers | Remote (US/CAN Timezones) | Full Time

The world doesn't need another ERP. CoPlane is building the Agentic Orchestration platform that enables enterprises to orchestrate intelligent processes across their existing systems. Founded by ex-Stripe/Segment product and tech leads, we're changing how businesses operate their backoffice - helping them scale intelligence not headcount.

We're looking for exceptional engineers to grow our small founding team of engineers that include ex-founders, open source contributors (authors of neovim and neverthrow), and architects of petabyte-scale data platforms. You'll work with billion-dollar enterprises solving their hardest, most mission-critical automation problems.

If you're excited about working at the nexus of data, automation and AI, and want to make a significant impact in an early, well-capitalized startup with large enterprise design partners, we'd love to hear from you.

Roles: Platform Engineer (Infra), Product Engineer and Forward Deployed AI Engineer.

For more info and to apply: https://coplane.com/careers

Got Seats (https://gotseats.com) | Senior Frontend Software Engineer | Full-Time Contractor | Remote (USA) | $65-85/HR

Got Seats is building a ticket resale marketplace similar to Stubhub or Seatgeek. We have exciting and critical features that those marketplaces lack. We are well capitalized and have excellent talent across engineering, product and business development.

We are a small team. You will have the opportunity for huge impact and ownership, and the trust to move fast and break things! We are building our MVP now.

We are looking for a Senior FE engineer with 5 years React experience and 1 year Next.js experience.

The role is fully remote, full time (40 hours/week), contractor (1099). You must be located in the US and able to work according to the Eastern time zone. This is a long term engagement, not a short term contract. We hope to graduate this role from 1099 to standard W2 with benefits as the company grows.

A successful engineer in this role will be detail oriented, product focused, appreciate engineering excellence, and have outstanding communication skills. Startup experience is a plus!

If you're interested, you can email me (Jordan, Head of Engineering) directly at jobs .[@at] gotseats .[!com]

JotPsych (https://jotpsych.com) | Hybrid (DC Area) | Full-Time | Role: Senior Frontend Engineer | $5m Seed Round

JotPsych is a behavioral health AI scribe tool and we're looking for frontend engineers as we build the first agentic EHR for behavioral health. We're looking to hire ASAP! More info in the link below:

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Senior Frontend Engineer: https://jotpsych.notion.site/we-re-hiring-senior-frontend-en...

Looking for engineers that are strong with Redux Toolkit (RTK) & RTK Query, comfortable reasoning about client‑side caching & invalidation.

- Cash (~$150-250k) - Material equity (~0.75%)

Rabbet (YC S17) | Sr. Software Engineer (Elixir/React) | REMOTE (TX, NC, CO) | Full time Rabbet is hiring Sr. Software Engineers to help us streamline construction finances. We offer cloud-based software for commercial lenders and real estate developers to centralize construction finances, automate administrative tasks, and reduce the time spent managing draws.

Backend is in Elixir (Phoenix/Absinthe/postgres), frontend is React (mostly JS with more new stuff in TS). The company is ~20 people with 7 of us on the engineering team. Looking to add another 2-3 engineers over the next ~6 months.

We are fully remote, though we do require candidates to be in TX, NC, or CO (exceptions possible if you have several years of professional Elixir experience). We don't currently offer sponsorship.

If you're interested, you can read more or apply here: https://jobs.ashbyhq.com/rabbet/581ed4d8-d683-428c-88c5-1131... You can also email me (Kelly, Engineering Manager) directly at Email is hidden.

Guilde (https://guilde.ai) | Staff Engineer + Senior Engineer | Full-Time | Remote (Americas & Canada)

Do you run multiple Claude Code sessions simultaneously, constantly tinker with new prompting techniques, and juggle a half dozen side projects? If you want to live AI all day, every day and build software you actually want to use, join us. We're four repeat founders who previously built StrongDM ($150M from Sequoia). Guilde transforms the firehose of new techniques, tools & models into the future of SDLC.

I'm Schuyler, one of the founders. If you'd like to join us, email Email is hidden with "HN: Staff SWE" in the subject line

What you’ll tackle: * Agentic workflows: deterministic orchestration with retries, audits, and cost controls.

* Eval & policy systems: golden datasets, regression baselines, policy-as-code gates.Integrations: Linear, Datadog, and other developer tools.

Full job description: https://docs.google.com/document/d/1cwauxalarygrxlyqe3cxviu-...

Fabric (stealth) | Lead Applied AI Engineer | NYC or SF | FTE remote | $150-200k USD + significant equity

Project Fabric is an AI‑driven consumer platform to reimagine how people connect in cities, and help solve modern loneliness. In a world where almost every AI is single-player, Fabric is about multiplayer: helping people discover, connect, and spend time together, not just chat with bots.

Our product is live in a small, curated beta with some of the most interesting people in NYC, with good early traction. We're looking for a high-impact Tech Lead to design, implement and scale new AI features and systems as we prepare to launch publicly.

What we're looking for: - 7+ YOE with a blend of modern web stacks and applied ML - Proven exp building in React eco-system, cloud-infra, MLOps, security - TL experience leading major features for consumer products - Prior work w/ search, recommendations, inference, RAG, performance

Full Job description + Apply details: https://studiomgmt.notion.site/lead-applied-ai-engineer-2658...

Strum AI | Founding/Lead Engineer | https://www.linkedin.com/company/strum-ai/

At Strum, we're reimagining technology that powers global supply chain using a fresh AI-first approach. Most supply chains are still stuck with Excel or enterprise tools that take months (and $MM) to adopt. Our mission is to lower that barrier — making it possible for any business, big or small, to access modern forecasting, inventory, and planning solutions in days, not months. We’re on our journey to democratizing supply chain technology. As our first engineer, you’ll be working with the founders (former Supply chain/tech directors at Amazon who have built key components of Amazon's supply chain) to develop the core product from the grounds up (involves application of LLMs, deep learning, and optimization). If you have mid to senior level experience in software development, have built SaaS applications, understand ML-Engineering, and love building 0->1 products, we would love to talk to you. Please reach out to us at: Email is hidden.

Location negotiable.

Narrative I/O | Senior Backend & Frontend Engineer positions | New York, NY | Full-time | REMOTE (4-hour overlap with EST for backend, US & Canada for frontend) | $120k to $200k USD | https://narrative.io/

Narrative has been building a data collaboration platform designed for simplicity and ease of use since being founded in 2016.

Our primary strength is functioning as a data marketplace where we differentiate ourselves by automatically standardizing data, making platform data accessible through the Narrative Query Language (NQL), giving data providers the ability to define row-level access and pricing policies, and making it easy to deliver data to a variety of destinations using our "Connector Framework".

We operate two flavours of our platform: An AWS-based implementation that runs on our infrastructure, and a Snowflake-based version running inside the user's Snowflake account.

We are a small, remote-first team looking for great developers who want to jump in and take major systems and user-facing features from design to launch. While the company's headquarters are in NYC, the development team currently includes engineers working from the US (California and New York), Canada (Alberta, British Columbia, and Québec), Poland, and Serbia.

In brief, the technologies we use are:

- Backend: Scala, Spark, Apache Iceberg, Apache Calcite, Cats, Cats-Effect, Http4s, FS2, Doobie, Deequ, Axolotl, BentoML, and HuggingFace Transformers.

- Frontend: Typescript, VueJS, Nuxt, Vite, and Cloudflare Pages.

- Operations: AWS (ECR, ECS, EMR, RDS, S3, etc.), Datadog, Docker, Terraform, with some burgeoning use of EKS/Kubernetes.

Job postings and more on information about our team and culture are available at: https://jobs.narrative.io/

Apply by sending your resume to 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/8056588...

- 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/7449077...

- 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...

- Production Engineers who spend time both developing software and providing high-quality support for software systems that are critical to our trading business -- https://www.janestreet.com/join-jane-street/position/5108180...

Holepunch|https://holepunch.recruitee.com|Senior Node.js Engineer|Full-time|Remote

Job requirements

- Significant experience with Node.js;

- Experience with C/C++ and writing native bindings for Node is a plus but not required;

- A strong background in building and managing modular codebases and creating reusable npm modules;

- Robust Testing & Debugging experience;

- Passion for P2P Technology is a plus.

Why Holepunch?

This is more than just a job; it’s an opportunity to be at the forefront of the internet’s evolution.

If you are driven by innovation and eager to build decentralized solutions that challenge the status quo, join Holepunch. Together, we can create a more secure, inclusive, and P2P decentralized future.