Alaffia Health | Principal Engineer (TypeScript) | NYC (Hybrid) | Full-time

Alaffia Health is a Series B healthtech company in NYC fixing a real, expensive problem: US health plans lose billions every year to improper payments and administrative waste in claims processing. We combine clinicians with AI to catch billing errors before they get paid out. Just raised $55M in our Series B led by Transformational Capital.

We're hiring a Principal Engineer, backend-heavy role (85-90% backend), to own architecture across multiple teams and help set technical direction as we scale.

Stack: TypeScript, Node.js, GraphQL, PostgreSQL, AWS, React/Next on the frontend.

You'd be:

Owning delivery on systems spanning multiple teams Driving adoption of AI coding tools (we use Claude Code) with real usage across the team, not just experimentation Mentoring senior engineers, influencing technical decisions without needing to go the management track Working closely with product and business leadership on technical strategy

Looking for 15+ years of experience, real hands-on TypeScript backend depth (Node.js, NestJS, or similar), and ideally some exposure to healthcare, fintech, or another regulated-data environment, though that's a plus, not a hard requirement.

Hybrid, 4 days/week in our SoHo office.

Please apply on the site:https://careers.kula.ai/alaffia/34483c

[delayed]

Stream | Multiple Positions | Amsterdam (NL), Skopje (North Macedonia)|Full Time | Visa Sponsorship

We’re hiring for:

* Lead Data Engineer (Amsterdam, Netherlands)

* Senior React SDK Developer (Skopje, North Macedonia)

At Stream, we use Go for our video SFU, chat API, Moderation and Feeds, serving high traffic from major apps like Strava, Nextdoor, Patreon, and Midjourney. Our tech stack: Go, CockroachDB, RocksDB, WebRTC, Raft, and Redis.

Why Join Stream?

* High scale/ difficult engineering, we have customers using our products with millions of users

* Default alive. Startup growth opportunity with healthy revenue

* All managers are hands-on and capable engineers

* Edge network of servers around the world

* Great opportunity to learn and grow

Remote: our roles are primarily NL, US, North Macedonia, or CA-based (hybrid), but exemptions for remote work within the EU may apply to specific cases. Visa Sponsorship: Available for the Netherlands Apply here: https://jobs.ashbyhq.com/stream?utm_source=5rrpvObp3r

SpendAi — I ship procurement-grade agents. ReWoo (paying UK client), QuantScope (35+ exchanges, 6-provider LLM fallback, 33 unit tests). 1st-author Bengali speech AI paper. Kaggle Master Top 1%.

Remote from Bangladesh (UTC+6). Available for paid trial this week.

adilshamim.me · adilshamim696@gmail.com

Location: Charleston SC Remote: Yes Willing to relocate: No

Technologies: PowerShell, Windows Server, Azure, AWS, Linux, Active Directory, SCCM, VMware Hyper V, Dell PowerEdge iDRAC, SIEM and log analysis, incident response, patch management, R, Commvault, DNS and WiFi troubleshooting, POS systems including Toast, network security, automation using PowerShell and Excel, infrastructure engineering, data driven operations analysis, workflow optimization, compliance review under FLSA, customer experience design, business process improvement.

Résumé/CV: LinkedIn: https://www.linkedin.com/in/giovanniwashington/ Resume: https://acrobat.adobe.com/id/urn:aaid:sc:va6c2:d91ef141-f4fa...

Email: giovanniqwashington@gmail.com

Summary: Senior Systems Administrator with eight years of enterprise IT experience across healthcare, manufacturing, and freelance environments. Specializes in PowerShell automation, systems reliability, and security focused operations. Completed an Associate of Applied Science in Cybersecurity and currently completing a Bachelor of Science in Information Communication Technology and a Master of Science in Computer Science. Strong ability to evaluate entire business systems including technical infrastructure, operational workflows, and customer facing processes, and deliver structured improvements that enhance stability, compliance, and performance.

Tessellate | Full Stack Engineer | Hybrid | Nashville, TN | Full-time

Tessellate is pre-seed and early — this is a real chance to help build a startup from the ground floor, led by second-time founders. There are genuinely hard, interesting data challenges under the hood that push us to lean into AI and machine learning as part of the product itself. We expect our engineers to be AI-native: using the most advanced AI and cloud tooling to ship quality software at pace. Startups aren't for everyone — but you'll learn a great deal, own outcomes that matter, and share in the upside if we win.

We're hiring an associate to mid-level product engineer to build alongside our small team and ship features across the product — from a mobile-first frontend through the Python API and the data beneath it. This is a build-and-ship role: your week is spent turning product ideas into working, tested, shipped features that physicians use.

You won't be alone at the edges. We have fractional senior support for our infrastructure and a dedicated data engineer for the claims layer, so you can lean on real depth where you need it and stay focused on moving the product forward. What we need from you is momentum on the product itself.

$100K - $130K apply at careers@t8health.com

XP Health | Senior Full Stack Engineer | ONSITE 2-3 days per week — San Carlos, CA | Full-time

XP Health is a Series B startup building the next generation of vision care. We're on a mission to revolutionize vision care through cutting-edge technology, including augmented reality, while ensuring a delightful and seamless user experience. We serve 3,000+ clients, including Fortune 500 companies, and have raised $50M+ in funding.

As a Senior Full Stack Engineer, you'll own features end-to-end—from designing and shipping customer-facing experiences to building backend services, infrastructure, and developer tooling. You'll work closely with our founding team & help shape the technical direction of the platform. Our stack includes React, Node.js, and AWS, with opportunities to work across the full stack. Backend leaning, Startup, and AR experience is a plus.

$180K–$220K base + equity, bonus, and strong benefits.

Apply here: https://grnh.se/bhfswi9e5us

Earl | AI product engineer | London | On-site 4 days/week | Fixed term to Dec 2026

We’re hiring an AI-native engineer to work with Earl on a live project inside a Premier League football club. This is not an AI strategy role, and it’s not a chatbot demo job. You’ll work directly with people inside the club's commercial team, find valuable problems, and build production AI systems that are actually used.

We’re looking for someone who can move from vague problem → technical design → working product quickly.

You do not need football experience.

You do need strong product judgement, the ability to work directly with non-technical users, and evidence that you’ve actually shipped things.

We’re particularly interested in people who build with AI as their default way of working, rather than conventional engineers who have recently added an LLM API to their CV.

To apply, send me:

- A short intro - 2-3 things you’ve built What you personally did - How you currently use AI to build software - Location and availability

Strong candidates will do a paid practical working session.

Contact: chris@earl.partners

Odin | Senior Design Engineer, Senior Platform Engineer — Edge Systems | Remote (US) | Full-time

Odin is the workforce visibility and compliance platform for critical infrastructure. We protect the world’s largest construction projects, data centers, and critical assets—from groundbreaking through post-turnover—by unifying physical access control, workforce compliance, video monitoring, and drone surveillance in one command center. We’re already on 500+ active projects with 100K+ workers, securing over $100B in construction value.

We’re hiring two hands-on senior builders:

1. Senior Design Engineer: Research, design, and build the interfaces people use to run jobsites. You’ll establish Odin’s design language and production design system, create coded prototypes with mocked states, and implement responsive, accessible screens across desktop, tablet, and mobile. We’re looking for someone whose portfolio demonstrates customer research, strong product and interaction judgment, and substantial production frontend engineering.

2. Senior Platform Engineer — Edge Systems: Build the software connecting jobsites to Odin’s cloud. You’ll work with cameras, access-control readers, rugged devices, local compute, and constrained networks. You'll own device integrations, video and event ingestion, buffering, synchronization, remote deployment, diagnosis, and recovery. We’re looking for production experience with edge or distributed systems, intermittent connectivity, third-party hardware or protocols, and software operating beyond a conventional cloud environment.

Our stack includes TypeScript end to end, Node.js and GraphQL, React and CSS, React Native and Expo, Postgres, Kubernetes on GCP, and Datadog. Design Engineering uses Figma and Claude Design. Edge Systems integrates with technologies including CCURE 9000, Avigilon, HID, Zebra, Esper, and Iru.

Both roles require strong ownership, operational maturity, mentoring, and using AI to accelerate work without outsourcing judgment. These are individual-contributor roles and include periodic jobsite travel.

Apply here: https://useodin.com

Evaboot | Agentic Python Engineer | REMOTE | Full-time | $70-120K USD

Evaboot turns LinkedIn Sales Navigator searches into clean, verified prospecting lists. Demo: https://www.youtube.com/watch?v=khYgyDlo2Iw

Bootstrapped, $2.2M+ ARR, team of 5, remote since day one.

What we're doing: building self-improving loops and agentic products.

Agentic products you'll work on: SDR agent (sales navigator agent, emailing outreach agent).

Self-improving loops you'll build: coding, support, SEO & content, analytics, and company-wide systems (memory, tooling).

You will work directly with me (co-founder & CEO).

Requirements: strong Python engineering, power user of agentic coding.

Bonus points: AWS, agentic plumbing & observability.

What's guaranteed: intense execution pace & exponential learning curve. Zero bullshit environment, we focus mostly on results and KPIs.

Autodidacts are welcome.

Two weeks maximum from apply to reply.

Apply right here: https://forms.gle/NM9BLJyuS8FNitYc8

ORIGAMICS | Founding Backend Engineer | REMOTE (US)

Origamics is building AI models that reason about hardware and electronics systems. We turn existing schematics into production ready boards, helping hardware design move at the speed of software. We’re hiring our first founding engineer to work directly with the founders. You’ll own product architecture, services, storage, engineering-tool integrations, and the productionization of physics-informed models.

You Might Thrive If You: have built 0→1 systems, make sound build-vs-buy and infrastructure tradeoffs, and are excited by agentic systems and foundational AI models. >4+ years of experience building REST applications.

Familiarity with the stack is not required but it would be nice to have. FastAPI, Postgres, S3, Python, Render/AWS, Codex/Claude/Kimi/Qwen (any other foundational model experience), monitoring frameworks.

Apply: https://www.origamics.ai/join-us (Let us know if you are applying from HN.)

Ai2 / Allen Institute for AI | Senior Software Engineer | Seattle | Onsite We're hiring a senior software engineer for AI for the Planet at Ai2.

We build agents and the infrastructure that powers them, helping mission-driven organizations tackle challenges across conservation, oceans, climate, and Earth observation. We’re looking for someone who enjoys owning systems end to end, shipping reliable production software, and creating an exceptional developer experience.

Comp: $146–220k base + bonus + benefits.

Apply: https://job-boards.greenhouse.io/thealleninstitute/jobs/8110...

Sitewire | Full-Stack Software Engineer | Full-Time | $130-200k USD | 0-0.1% Equity | Remote (US only)

I'm the head of engineering at Sitewire, a construction finance platform that helps lenders and real estate investors track projects, automate work verification, and speed up payments. Our small, fully-remote team has built a profitable product that's expanded organically 3x per year, mainly through word of mouth. We're now looking to roughly double the size of our engineering team as we enter our next phase of growth.

We're looking for smart, pragmatic full-stack engineers who operate with a high degree of autonomy and ownership. This is not a ticket factory: you'll be working directly with our PM to turn product briefs into new platform features and will have a hand in shaping the architecture and design of the things you build.

Our current stack is React and React Native on the client side with Postgres as our database. Our web app and API are currently powered by a Ruby on Rails monolith that we're gradually migrating off of. You don't need experience with Rails and it's not what we're hiring for: we're looking for React experience + solid backend engineering experience with any modern language.

Our interview process is pretty simple: a phone screen/behavioral interview, a 1-hour coding challenge that you can complete as either a live session or a take-home (your choice), and a presentation on a project you designed and feel particularly proud of (or think is particularly interesting).

If you're interested, please fill out this form and I'll be in touch: https://forms.gle/diVa5ScKJLYnW7u38

Joulent | Founding ML Platform Engineer, Energy Intelligence | San Francisco | HYBRID | Full-time | equity

We deliver multi-gigawatt power to AI data centers, and this is the founding hire on the team that forecasts load and market prices. You own the whole spine: ISO/RTO market feeds, weather and plant telemetry through feature store, serving, drift detection and the model gateway.

Not a scale problem — the data is rich, not petabyte. Feeds land late and get revised after the fact without ever throwing an error, so the failure mode is a price series quietly wrong for three weeks behind a forecast that looks fine. The work is trust infrastructure: lineage, freshness SLAs, point-in-time correctness, eval gates that can block a model.

Python, SQL, Airflow, containers, IaC. 5+ years on production data and ML platforms; energy background welcome, not required.

JD: https://joulent.github.io/careers/ — sandy.suresh@joulent.com

Silicon45 | kdb+/q Expert | Contract (part-time OK) | Portland, OR (Hybrid) or Remote

We're building a heterogeneous execution platform to accelerate data analytics and ML workloads, and we're looking for a deep kdb+/q expert to work alongside our hardware acceleration team. You'll focus on kdb+ internals, query optimization, and the C API, helping us understand how queries execute under the hood, where the bottlenecks are, and how to integrate acceleration into kdb+ workflows.

Looking for: expert-level kdb+/q, engine internals, query planning/optimization, C API extensions, performance analysis. Nice to have: exposure to hardware acceleration concepts.

Apply: email amir@silicon45.com with your resume and a short note on 1-2 performance-critical kdb+ systems you personally built or optimized.

SpendAi | Seattle, WA | ONSITE | Senior Software Engineer | Engineer #4

SpendAi is a procurement intelligence startup which uses AI to organize procurement data for downstream consumption of AI agents. Our product turns fragmented procurement data into trusted procurement intelligence.See more at https://spendai.com.

We are looking for ambitious full stack engineers who have experience building complicated data systems with agentic interfaces on input and output. People who will be successful are obsessed with data systems, enjoy systems engineering, and are able to operate with a ton of autonomy.

The base pay range for this role ranges from $100,000 to $250,000 + Equity + Benefits.

Please apply here: https://wellfound.com/recruit/jobs/4574551

Stpkr Technologies | Noida, India (Delhi NCR) | ONSITE | Multiple roles

Stpkr Technologies is hiring for the following roles to build the next generation of wearable devices.

We are currently looking for the following roles but we are also open to interviewing any candidates who feel like they will do their best work here - even if your skillset/experience doesn't fit the current defined roles. Our current team doesn't fit the conventional mold, and we don't expect our future hires will either. If you don't fit the advertised roles, just send us a mail per the same process with whatever job title would fit you the best.

Work is in person near Noida Sector 18, walking distance from Sector 18 Metro Station. We prefer in office work, and for you to be located within Delhi/NCR, Pay is competitive (9-12 LPA), and there are opportunities to earn meaningful equity down the line. We prefer current and recent undergraduates for our roles. If you are still in college we welcome you to apply nonetheless provided you can work as an intern for us in person. Super-flexible overall and all of our current team started out as interns.

Hiring across OS, software, and hardware. AI policy across all roles: you should be able to do the work without AI, and much faster with it.

Systems Engineer - Everything at the OS layer. You've rooted phones, flashed custom ROMs, broken and fixed Linux for fun. Comfortable in C/C++. GitHub with kernel-adjacent or LineageOS-type projects a plus. Stack: Android, Linux, C, C++, Java. Filter: send us something you built where you had to fight the OS or hardware.

Hardware Engineer - Bring-up/Debug/Integration - Take EVT/DVT boards and make them work. Comfortable with J-Link and IDE debugging, reading schematics and reference designs. KiCad/Altium/EasyEDA hobby work would make you ideal. PetaLinux experience or hunger to learn it. ECE undergrad fine. Filter: photo of a board you designed or debugged, plus what went wrong.

Hardware Engineer - Power/RF/Wireless - Make the power and RF paths behave on EVT/DVT boards. Hands-on with schematic capture, layout, soldering, scope/logic analyzer. Given two unknowns, you pick one and start measuring. Filter: sensor fusion work, how noise behaves across protocols, and SPI debug chops.

Founder's Office - Work closely with the founder and the rest of the team to manage the day to day and long term affairs of the company, the Man Friday of the company. Must have a decent degree of technical knowledge (we are a tech company after all) and be efficient at administrative tasks as well as management. Speed and learning ability are prized here, there will not always be a clear path to the work you have to do here, so you will have to figure some of it out on your own.

To apply, contact arnav@stpkr.in with the subject line "HN - Human" and a brief intro for further communication. Attach any documents you deem useful there. Please include the role you are applying for at the top of the email if it is one of the above mentioned, otherwise whatever role fits you best. Shortlisting will be online, interviews will be in person. We are hiring quickly, expect to hear back from us within 2-3 days of applying. If you don't, assume you will not. If you are using an AI agent to mass apply for jobs and we can tell, then you will not hear back. Use an expensive one :P Thanks for your time!

Bactrix | Founding Software Engineer | REMOTE | Equity | AI/Biotech We’re building an AI platform for antibiotic drug repurposing and antimicrobial resistance research. Looking for a strong software engineer to join the core founding team and build production AI workflows, backend infrastructure and scientific tooling. Stack: Python, LangGraph/LangChain, APIs, cloud, AI agents; experience with ML/biotech is a plus. Early-stage/pre-funding role with equity. Looking for someone genuinely interested in building long term. Contact: HR@bactrix.com

Stealth Startup| Software Engineer | Full-Time | REMOTE (US) | $180,000 - $250,000 USD

We’re looking for software engineers with 3+ years of experience to connect them with the best remote opportunities available. Ideal candidates have a solid generalist background in software development and are ready to contribute on real production systems.

If you’re interested, apply by sending your resume to paulephraimebuka@gmail.com

Arcforma AI (arcforma.ai) | AI Engineer (Marketing / Construction / Fashion & Luxury) | REMOTE (US only) or ONSITE NYC | Full-Time $80k-$120k + equity, or Contract $50-$150/hr | jobs@arcforma.ai

We build production AI systems inside other people's companies: hotel groups, automotive retail, creative agencies, consumer brands. One industry at a time, sitting next to the operator whose job the system changes. Very little of it is generic LLM plumbing.

Two ways in.

CONTRACT, PROJECT-BASED ($50-$150/hr). For people who already have the domain. A scoped first project, typically three to six weeks. This is most of what we need right now, and it is how we would rather start with anyone senior.

FULL-TIME ($80k-$120k + equity). For strong engineers earlier on who want to go deep into one industry with us instead of staying a generalist. We teach you the vertical. You bring the engineering.

Pick one track. Depth in one beats a tour of all three.

MARKETING. Lifecycle and CRM automation, brief-to-asset pipelines, creative variants with brand guardrails that hold, attribution. You have fought HubSpot, Klaviyo, and the Meta and Google ad APIs.

CONSTRUCTION. Invoices in, mapped to contracts, schedule of values, and cost codes, back out as pay applications. Then RFIs, submittals, change orders, schedule impacts. You know why generic invoice parsers stall when half the input is handwritten. Weighted toward ex construction tech and people who have run operations at a GC or a sub.

FASHION AND LUXURY. Merchandising and assortment planning, tech packs and PLM, Shopify Plus and PIM, allocation, replenishment, demand forecasting, size curves, markdown optimization, clienteling, creative workflows.

ALL TRACKS: You own a system end to end (data in, evals, an interface the client actually opens), and you can sit with a non-technical operator and leave with the right spec.

TO APPLY: email jobs@arcforma.ai with the subject line

HN | TRACK | Your Name | your applicable background in one short line

TRACK is MKT, CON, or FASH. For example:

HN | FASH | Jane Okafor | 6 yrs building allocation and planning systems at a DTC apparel brand

The body: what you shipped that is applicable to the role, a link we can open (GitHub, a writeup, a demo), LinkedIn, and your timezone plus whether you want contract or full-time and at what rate.

Every application gets a reply within five business days. 20 minute call, paid trial on real work, then a project or an offer.