CVector | Software Engineers, Senior Research Engineer | New York City (FiDi) | ONSITE | Full-time | VISA SPONSORSHIP

CVector builds software to bring real time economic optimization and AI prediction to every energy and manufacturing plant. 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, machine learning models and backend systems, shaping tools that directly impact industrial operations and energy reliability. Build AI agent systems that automatically foresee upcoming problems and provide possible solutions.

Full Stack and Backend Software Engineers: We're looking for a passionate Software Engineers comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, TimescaleDB, PostgreSQL, AWS, FastAPI) or someone to specialize in our backend infrastructure.

Senior Research Engineer: Candidates should be experienced with machine learning, and analysis using Python.

Reach out to me at jnapoli+hn@cvector.com

FusionAuth | Principal Software Engineer, Senior Java Engineers, Account Executive, Customer Support Manager | Varies between REMOTE (in USA, also in Europe but only for the account exec position) and ONSITE in Denver, CO, USA, details in each job desc | Salary ranges for the Principal Software Engineer it is 225k-270k, but the Euro positions don't have them :(

At FusionAuth, our mission is to make authentication and authorization simple and secure for every developer building web and mobile applications. We want devs to stop worrying about auth and focus on building something awesome.

There are a lot of companies in the auth space, but we feel like we have something special:

* a relatively unique deployment model (self-host on-prem, run in your cloud or let us operate it for you in ours)

* A well designed API first approach; one customer compared our APIs to petrichor

* a mature product (the code base is nine+ years old and we've found and fixed a lot of the sharp edges around core login use cases; but don't worry, there are plenty more features to add)

* a full featured free-as-in-beer version which makes the sales cycle easier; prospects often come in having prototyped an integration

Our core software is commercial. We open source much of our supporting infrastructure. Technologies and standards that you will work with: modern Java, PostgreSQL, Docker, Kubernetes, MySQL, OAuth, SAML, OIDC.

Learn more, including benefits and salaries, and apply here: https://fusionauth.io/careers/ ( Click/tap the 'View open positions' orange button. )

Datamint | Rust Systems Engineer, Browser Security | Remote (Global) | Full-time | $120k–$170k + Equity | https://datamint.xyz

We build high-throughput crawling and structured data extraction infra designed for AI agents and LLM pipelines.

If you’ve built scrapers recently, you already know the state of the market:

- Traditional proxy providers (Bright Data, Oxylabs, Smartproxy, Proxybase) give you raw IPs or massive unparsed HTML blobs, leaving you to deal with DOM bloat, token waste, and brittle parsing pipelines.

- Modern tools like Firecrawl or Jina made clean Markdown extraction easy for hobby setups, but they often struggle when you throw heavy SPAs, high-concurrency jobs, or hardened anti-bot walls (Cloudflare Under-Attack / Turnstile, Kasada, DataDome) at them.

- Rolling your own Playwright / Puppeteer cluster works until target sites deploy new JA4/TLS fingerprints, and your data team ends up spending 30% of their sprints fixing broken crawlers instead of shipping product.

We're tackling this by combining a low-latency Rust fast-fetch engine (JA4/TLS and HTTP/2 frame emulation) with an isolated stealth browser fleet, zero-code schema validation (JSON Schema/Pydantic), and native Model Context Protocol (MCP) support.

Trade-offs / where we fit: If you just need to curl a few static Wikipedia pages, a 10-line Python script is better and cheaper. But if you need reliable, structured data out of bot-defended sites without babying headless browsers, that's what we do.

We're looking for:

1. Rust Systems Engineer: High-concurrency network I/O, Axum/Tokio, TLS/BoringSSL fingerprinting, proxy routing matrices, and low-latency data pipelines.

2. Browser Security Engineer: Deep familiarity with browser internals (Firefox/Chromium source), canvas/WebGL/audio fingerprint evasion, CDP/WebDriver stealth, and familarity with anti-bot defenses.

Our stack: Rust, Next.js 16/React 19, TypeScript, hardened Firefox/dwx_crawler, Linux/Xvfb, SQLite WAL/Postgres.

If interested, shoot an email to jobs@datamint.xyz (or founders@datamint.xyz) with your GitHub, a project you built or broke, and what you find interesting in this space. No formal cover letter needed.

CABLE | Software Engineer (early team) | Sydney, Australia (ON-SITE) | Full-time | https://jobs.cable.energy/roles/3e2cd174-71f5-80ae-a1d2-db8b...

We're Australia's battery-backed electricity company. We fund, install and operate batteries on-site at small businesses, then supply their power at a firm, flat rate 20–40% below incumbents, making the economics work by optimising those batteries against wholesale prices. We're live with real customers. Team of six, backed by Systemiq and Black Nova; engineering includes Casey, who previously led Google engineering in Paris and Google Maps in Sydney.

We're AI-native: engineers, energy specialists and go-to-market colleagues all ship with coding agents. Each engineer owns a product end to end, from the commercial problem through to production. Flat structure, lots of ownership.

Areas you could own:

* Customer experience: quoting, onboarding and the customer app

* Metering and billing: turning high-volume interval data into accurate bills

* Energy-market and battery data: the market, weather and telemetry pipelines behind our decisions

* The agent-driven development platform the whole team builds on

Stack: TypeScript, React, Postgres, serverless. Intro chat, system design, an agentic build, then a day with the team.

Apply at https://jobs.cable.energy/roles/3e2cd174-71f5-80ae-a1d2-db8b... or email theo@cable.energy.

RINSE | REMOTE (US or Canada) or San Francisco, Los Angeles, Chicago, Boston, New York City, New Jersey, Seattle, Austin, Toronto, or Washington DC | Software Engineer | Full-Time | Salary: $80k-$200k USD | https://www.rinse.com

Rinse provides dry cleaning and laundry delivery services to customers in twelve metropolitan areas in the US and Canada. We have sophisticated logistics optimization software, a polished consumer product, and firm business fundamentals. We're now over a decade old - this is a stable, yet consistently growing and innovating, company.

Our engineering team is distributed across the United States and internationally, and has been entirely remote for years now, but a desk can be provided in the above cities if you'd prefer.

We're open to both newly-graduated engineers or more senior engineers, provided they meet our bar. We're particularly interested in true full-stack engineers, with strong React / Typescript / CSS skills to complement comfort in a Python / Django environment. We're also seeking engineers with experience leveraging AI to automate complex operational processes.

This season, we're particularly interested in new grads or junior engineers, to round out the team.

We're also looking for people with experience manipulating video data at scale, for computer vision applications. Similarly, we're interested in adding people with experience building and managing MCP services.

You will join a high-caliber team where collaboration, honesty, and open communication are at the core of everything we do.

Search term bingo: Logistics, Django, Python, Optimization, React, React Native, Postgres, Mobile Engineer, Automation, Delivery, OR-tools, Forecasting, Vision, Physical AI, MCP

Cardog | Toronto, Ontario | ONSITE, HYBRID, REMOTE (role-dependent) | Full-time | https://cardog.app/careers

Cardog turns raw vehicle data into facts you can check: VIN decode, market price, recalls, and what the car's own modules report. Insurers, dealers, manufacturers and the public bodies that register vehicles all use it. We're a small team and every engineer owns a whole area.

Data - Data Platform Engineer (Remote). Own the datasets: government files, manufacturer filings, dealer listings, signals from the vehicle. Decide which source wins when two disagree, and be able to prove it. SQL first, entity resolution, tens of millions of rows. Postgres, TypeScript, Workers, R2. - VIN Decode Engineer (Remote). Own decode accuracy. Read manufacturer filings line by line, write the patterns, and test them against millions of real VINs. For people who are obsessive about correctness. TypeScript, Postgres.

Design - Design Engineer (Remote). Own the component library and the screens built on it. Dense data, and making uncertain or missing values look uncertain. You design in the browser and you merge it yourself. React, Next.js, Tailwind. - Founding Engineer, Dealer Platform (Toronto / Remote). First engineer on software for dealer groups. Time in stores, then ship it the same week. Strong Postgres, multi-tenant.

Business - Account Executive (Toronto / Remote). Enterprise and public-sector sales cycles measured in quarters. Run technical first calls alone and pull your own numbers in SQL. - Policy & Standards Lead (Ontario). Represent us in the consultations and standards bodies writing the rules for vehicle data. Closer to counsel than comms.

Field - Hardware Engineer, Vehicle Interface (Toronto). Own the diagnostic-port device: board, firmware, enclosure, from bench to a unit on a dealer lot. C or Rust, CAN at the frame level, UDS/ISO-TP against real cars. - Forward Deployed Engineer (Ontario). Take named accounts from the first meeting to a running system. TypeScript, SQL, and some time under dashboards.

Apply on the page (each role takes applications in place) or write to careers@cardog.app.

KSC Trading | Remote | Full-Time | Senior Backend Software Engineer | $200k to $250k USD Total Compensation + Benefits

KSC Trading is a proprietary algorithmic trading firm founded in 2020. The company creates software to engage in automated trading in sports and prediction markets. The focus has been on statistical arbitrage and liquidity provision. We are currently a team of two, expecting to grow to a team of six over the next year.

The role would include maintaining and expanding the trading infrastructure. Example projects would be to integrate new exchanges and data sources, normalize market data feeds, optimize backtest performance, and build systems to monitor and analyze live trading. The current tech stack is based on Java, Google Cloud Platform, and Postgres.

Location: Remote with at least 4 hours overlap with US east coast working hours.

The company donates 20% of its profits. To apply reach out at hiring@ksctrading.com with your resume.

Trackerbot | Full-Stack Developer (Node.js) | REMOTE | €35-45k/year

Trackerbot.me is a profitable SaaS product used by thousands of eCommerce sellers to automate order tracking and fulfillment across marketplaces such as eBay and Amazon.

We're a small engineering team of 3 (including me, the CTO/co-owner), so this is a hands-on role with a lot of ownership. You'll work directly on the product and take features from idea to production.

Our stack is primarily Node.js / JavaScript, PostgreSQL, Heroku, AWS/S3, and Chrome Extensions.

We're looking for someone with strong Node.js and PostgreSQL experience who is comfortable working independently on a production SaaS product. Experience with Heroku and especially Chrome extension development is a big plus.

The position is fully remote. We're based in Sofia, Bulgaria, and also have an office here if you're local and want to work in person occasionally.

Interview process: short intro call → small take-home assignment → discussion of your solution → offer.

No LeetCode and no six-round interview process.

Apply: email me at dobrev.d10@gmail.com with your LinkedIn, GitHub, CV, or whatever best demonstrates your experience.

Location: Boston, MA Remote: Yes (preferred) Willing to relocate: No Technologies: Python, TypeScript, Rust, SQL | pandas, polars, Arrow, DuckDB/DataFusion, Parquet, PostgreSQL | React, ag-grid, FastAPI, Django | MCP servers, LLM tool design, agent evals Email: paddy@paddymullen.com

I build data tools, from the dataframe backend to the browser.

I created and maintain Buckaroo (https://github.com/paddymul/buckaroo), an open source dataframe UI for Jupyter, marimo, and VSCode — summary stats and a histogram over every column, across pandas and polars. 683 stars. Scrolling millions of rows without eating the browser took a segment-merging row cache and parquet decoded client side.

Recently: Tallyman, a data science environment for coding agents. Named computations in a dependency DAG, results rendered live in a browser companion, every step keeping the prompt that made it. Demoed at PyData London 2026.

Before that: Flatfile, Attune, Tudor, and Bokeh/Wakari at Anaconda.

Looking for data infrastructure, developer tools, or agent tooling — where a hard backend problem has to surface as something a person can use.

MeritFirst | Senior Software Engineer | Austin, TX (ONSITE) | Full-time

MeritFirst helps companies hire on demonstrated ability instead of pedigree. Candidates take realistic work-sample assessments, and employers get a signal they can trust more than a resume. We are backed by 8VC and Slow Ventures.

The hard part is building a signal good enough to influence real hiring decisions: fair to candidates, predictive for employers, explainable, and hard to game.

What you'll build:

- The product candidates use to prove what they can do

- The product employers use to find and hire them, and the scoring behind it

- The engineering bar the next hires will inherit, and helping us hire them

Stack: TypeScript, React, Next.js, Postgres.

We want people who have built and run real production software, debug from evidence, and do not need a fully specified roadmap. Early engineers, technical founders, and senior ICs do well here.

We use AI to move faster and to understand code better, but we do not blindly ship what it writes. You are expected to know and own every line you commit.

Start with the assessment: https://www.meritfirst.us/candidate/tests/40bfae94-dbf6-43fd...

Octane | Senior Software Engineer, Decisioning | REMOTE (US only) or NYC/Dallas | $130K to $170K base + bonus eligibility + employee stock options

Octane is unlocking the power of financial products for merchants and consumers. Our cutting-edge technology and innovative financial products empower businesses with more control and flexibility, enabling them to deliver seamless digital experiences, drive customer loyalty, and build long-term value.

We are hiring a Senior Software Engineer to build features and infrastructure for our decisioning (automated underwriting) team. Used by dealerships across the country, this product provides a streamlined workflow for dealerships to get fast, flexible financing to their customers. Working with a team of passionate, experienced engineers, you'll work throughout the backend of our stack with technologies such as Python, Django, PostgreSQL.

Apply: https://octane.co/o/who-we-are/careers/jobs-open/?gh_jid=799...

Paramark | Software Engineer (L4) | San Francisco HYBRID (3 days/wk) or REMOTE (US) | Full-time | $199K–$249K + equity

Paramark helps Marketing teams optimize spend across all of their channels and programs. There are proven scientific ways to do this, but they are poorly understood and practiced by only a tiny fraction of teams. Our product ingests data from all of our customers' marketing channels and uses it to train open-source ML models for both measurement and experimentation. This makes it possible for any marketer to use these methods.

In this domain, it's hard to figure out what to build, and it's even harder to be both accurate and simple. You'll be joining a small team -- we have four product engineers. That means owning systems end to end and having real influence over what gets built. Your typical project will start with a high level goal, and you will figure out the rest.

Founded 2023, ~16 people, $8M from Greylock, cash-flow positive. Reasonable working hours: when the Mercury News covered the return of 996 culture, we were the counterexample. "We don't think early stage startup life requires 18-hour days, or even 12-hour days." https://www.mercurynews.com/2025/08/25/silicon-valley-startu.... 4 weeks PTO plus federal holidays, medical/dental/vision (100% of employee premiums, 50% for family).

Looking for 8+ years, full-stack. Some exposure to statistics, experimentation, or A/B testing helps.

Stack: TypeScript, React, Python, Postgres. Google Cloud, Kubernetes, FastAPI, taskiq.

Process: intro call; technical phone screen; one-day onsite in SF (travel covered for remote candidates)

In-person: https://paramark.com/careers/software-engineer-l4

Remote: https://paramark.com/careers/software-engineer-l4-remote

I'm the CTO and I read every application myself. Happy to answer questions in this thread.

Enveritas (YC S18, non-profit) | Backend Software Engineer | Remote (Global) | https://enveritas.org/jobs/ Enveritas is a 501(c)(3) nonprofit working on sustainability issues facing smallholder coffee farmers. We collect field data in 30+ countries and build systems for analyzing risks in coffee, cocoa, and tea supply chains (including EUDR-related deforestation checks).

* Backend Software Engineer (Python, PostgreSQL/PostGIS, Docker, AWS, Terraform) - $135-$155k -https://enveritas.org/jobs/backend-software-eng/#10d7adef8us (worldwide remote)

VOYGR (YC W26) | Founding Product Engineer | San Francisco | ONSITE | Full-time | $150K-$200K + 0.5%-2.0% equity

I'm Yarik, cofounder and CTO. Before this I spent 20 years in tech with 10+ years running infra, ML and search teams at Google, Meta and Apple.

We love maps and build location/businesses APIs for AI apps and agents. If ChatGPT tells you a restaurant is open and it actually closed in March, that's the problem we fix. We check whether a business still exists, whether its hours and details are right, and enrich it with what's being written about it on the web (news, articles, events). Customers get all of it through one API and we solve it for them with our models which use all available sources and ai voice agents which can confirm the information.

You'd be one of the first engineers. Some weeks that's search and ranking, some weeks it's data pipelines or evals, some weeks it's the API or something a customer asked for yesterday. You'll have a big say in what gets built, not just how.

Stack: Python, FastAPI, Postgres/PostGIS, DynamoDB, Redis, AWS (EKS), our own ML models plus LLM APIs (OpenAI, Gemini, Anthropic).

What I'm looking for: - 2+ years shipping production systems, or fewer if your background is unusual and you can show what you've built - real experience with at least one of: search/IR, large-scale data processing, ML systems, API design - you already use Claude Code, Cursor or similar as part of how you work - geo/POI data experience is a plus, not required

Fair warning: we are a small team, fast pace, and there could be nights and weekends. If that's not where you are in life right now, totally fine, this just isn't a good fit.

Process: a short note on why you, a 30 min call with me and then Vlad, a technical deep dive, then a paid trial project.

Apply here: https://www.workatastartup.com/jobs/93490 or email me directly at yarik@voygr.tech

Curai | Remote (US) | Full-time | https://curaihealth.com

We're building AI agents to expand access to affordable, and high quality healthcare. We run a vertically integrated primary and urgent care clinic and are actively building an agentic platform focused improving longitudinal care outcomes.

We're hiring engineers to work across patient and clinician experiences, production AI systems, and the platforms that help people discover and access care.

* Sr Software Engineer, Full-Stack: https://jobs.lever.co/curai/46e0dd2f-c1dd-4ca2-9095-5b45f477...

* Sr Software Engineer, Agentic AI: https://jobs.lever.co/curai/cd31b67b-d83c-466a-ac55-cfa4c2ec...

* Sr Software Engineer, Marketing Platform: https://jobs.lever.co/curai/b157298e-4dc7-4594-a9c4-29f0dec4...

Tech stack: Agents SDK, Braintrust, Python, React, React Native/Expo, AWS, Postgres, DynamoDB, Docker, Terraform.

Solace Health | Multiple Engineering Roles | REMOTE (US) | Full-time | No visa sponsorship offered

We're hiring Typescript Engineers (full-stack, backend, and platform) on all our core groups.

We're Solace Health. In 4.5 years, we've provided free healthcare advocacy to over 200K patients on Medicare, and just begun opening access to everyone in the US. We exist to make sure nobody in the US has to navigate their healthcare journey alone. We hit Unicorn status after our February Series-C led by IVP, bringing us to $207M raised and a $1B valuation. Compensation and benefits are highly competitive and include equity.

Open Roles

- Senior Full Stack Engineer ($150k-$200k) - Senior Backend Engineer ($150k-$200k) - Staff Software Engineer ($200k-$225k, Fullstack or Backend lean) - Senior Platform Engineer ($150k-$175k) - Technical Lead ($200k-$230k, player/coach people managers)

Tech Stack Typescript with ReactJS and NodeJS plus NestJS, PostgreSQL, GCP, SQL, TypeORM, shadcn for our UI Library and GCP. K8s for platform.

APPLY HERE https://jobs.ashbyhq.com/Solace?utm_source=x4QJmBQEg7

If you want to build fast with high autonomy and believe in strong typing as much as we do, we'd love to hear from you!

Hedge (YC) | Founding Engineer | San Francisco | ONSITE | Full-time | $150K-$250K + 1-3% equity

Hedge is an AI-native insurance company. We started as a wholesale brokerage for specialty commercial insurance, where AI agents do most of the work of placing policies: reading messy submissions, chasing missing information, working with 100+ insurance markets, and moving accounts toward coverage. The agents are in production doing real work for paying customers.

We're hiring our founding engineer to own the platform end to end: agents, evals, data pipelines, integrations, and reliability. Python/FastAPI, TypeScript/React, Postgres. You should be deeply technical, resourceful, and have taken something from zero to one. No insurance experience needed.

In office in SF

Apply: https://www.hedgespecialty.com/careers?ashby_jid=b79fa956-bd...

City Detect | Full Stack Product Engineer (Design & Geospatial) | Tuscaloosa, AL | REMOTE (US) | Full-time | $110k–$159k + equity

City Detect uses AI and computer vision to map the physical world for cities. Sensors capture street-level conditions so local governments can find and respond to issues like blight and track how neighborhoods change over time. Founded in 2021, Series A, working with municipalities across Texas, California, Florida, and beyond.

We're looking for a frontend-leaning full stack engineer with a strong eye for design to own the map-heavy parts of our product. That means interactive maps, spatial data explorers and dashboards that city staff use to make decisions.

Stack: React/TypeScript, Python/FastAPI on AWS Lambda, Aurora PostgreSQL + PostGIS. Experience with Mapbox, deck.gl, Leaflet, D3, vector tiles/H3, or nation-scale OSM data is a big plus.

Mid to senior level. Small team, close work with the founders, real ownership.

Process: phone screen, portfolio/design review, 1–2 technical conversations, references, then a chat with our CEO. No LeetCode.

Perks: unlimited PTO, health/dental/vision, $100/mo wellness stipend, team retreats twice a year.

Apply: https://jobs.gem.com/citydetect/am9icG9zdDr5AWjF1AZ1UgSdc0I0... Questions: bjorn@citydetect.com

Location: Dorset, UK

Remote: Yes (UK, US and EU time zones)

Willing to relocate: No

Technologies: Ruby on Rails, Python (FastAPI), TypeScript/Node, Go, PostgreSQL, AWS, Hotwire

Resume/CV: https://wagnermatos.co.uk

Email: wm@wagnermatos.co.uk

Senior engineer, over 15 years. I build complete products: one senior engineer accountable end to end, AI accelerated. Recent work includes a clinical alerting platform used by NHS trusts, an edge to cloud analytics platform for Johnson & Johnson Medical, and the cloud platform behind a fielded detection hardware fleet. Also open to contract engagements. Case studies and client testimonials on the site.

Snout https://snout.com/ | Multiple Engineering + Product Roles | Remote US or Ontario, Canada | Full Time

Join us at Snout on our mission to ensure no one ever has to make a health decision for their pet based on the cash in their bank account. Snout plans pay for 100% of routine veterinary care, unlimited visits, and additional member benefits - think pet insurance, that you will actually use every year.

We're growing the team and hiring across the board. Featured role this month:

Founding Data Engineer - be our first data hire: make sense of hundreds of millions of rows from vet practice-management systems and our own app, and turn our Postgres and dbt warehouse into a foundation the whole company trusts.

Our tech stack includes Node.js, React, PostgreSQL, AWS, Tailwind, and Python. We use both JavaScript and TypeScript heavily. Our team uses LLM-based tooling day to day, but we're fundamentally a human-centric team, and our product itself does not heavily feature AI components.

Apply at https://jobs.gem.com/snout