Attendi | Senior Mobile Engineer | Amsterdam, Netherlands | ONSITE (hybrid) | Full-time (80–100%, ~4–5 days/week) | Visa sponsorship + 30% ruling possible

Company: Healthcare professionals spend too much time on admin when they should be delivering care. Attendi is building the Dutch healthcare sector's voice-enabled (digital) notepad: an intuitive tool for capturing and structuring medical data at the point of care. We have product-market fit and are scaling from ~100 healthcare organisations to 10x our userbase over the coming year. Our first native Android and iOS apps are already released and in daily use (https://apps.apple.com/nl/app/attendi/id6757230193), and we're looking for someone to lead their development.

Role: As our senior mobile engineer you'll own these apps end to end: building and maintaining the native Android and iOS clients, plus our open-source microphone SDKs (https://github.com/attenditechnology/attendi-android and https://github.com/attenditechnology/attendi-ios).

Stack: Kotlin (Jetpack Compose) on Android, Swift (SwiftUI) on iOS.

Apply: https://attendi.recruitee.com/o/senior-native-androidios-mob... - or email omar [at] attendi [dot] nl with something you've shipped. Mention HN.

micro1 | Software Developers | Remote / Global | Contract | $60–$110/hr

I’m sourcing candidates for a remote Software Developer role with micro1.

Relevant backgrounds: Python, Rust, Go, Java, Node.js, full-stack, Android, or iOS.

Details: Remote / Global Contract $60–$110/hr 100 openings 1+ years hands-on dev experience AI interview required

Apply: https://jobs.micro1.ai/post/774871bf-951f-4f26-9fe8-42eabfce...

Disclosure: I’m sourcing for this role as a recruiter partner, so the link includes referral tracking.

Beacon AI | San Carlos, CA | Hybrid (On-Site) | Full-Time | www.beaconai.co

Beacon AI builds intelligent systems that make aviation safer and more autonomous. We’ve completed multiple DoD programs and are expanding our team with exceptional technical leaders to push the boundaries of human-machine collaboration in the cockpit. At Beacon, you will lead by example, mentoring and growing a small team of talented engineers (typically 1–2 to start) while staying hands-on in design and execution. You’ll help shape critical systems that advance aviation safety and autonomy, working alongside a team that values effort, creativity, and accountability.

We’re hiring Lead Engineers with 5-9 YOE who love solving complex problems. At Beacon, you’ll own your work end-to-end, from prototype to deployment, and literally see your code take flight in real world aviation environments! Roles:

++ iOS Engineer [Tech Stack: Swift, SwiftUI, UIKit, Mapbox]

++ Senior Security Engineer [SIEM, IDS/IPS, vulnerability scanning, encryption]

++ Infra/Backend Engineer [Tech Stack: AWS]

++ WebApp/FrontEnd Engineer [Tech Stack: Python, Typescript, React]

++ Lead Autonomy/Robotics Engineer [Tech Stack: C++, Python, iOT]

Join us at beaconai.co/careers. Mention in the application that you saw our post on HN.

Coop (https://smart.coop.farm)| 2nd Founding Engineer | iOS Heavy Engineer | Hybrid onsite | Austin, TX | Full-time, Part-time

My name is AJ Forsythe and I'm the Founder / Chief Chicken Tender at Coop! We're an Austin TX based company on a mission to build the world’s largest decentralized food production network, starting with AI powered chicken Coops. We’ve been in the market for about 18 months and our customers are in 48 states and will generate about >10M eggs this year. It's insanely fun to work on and we have a shot at building a huge business in the connected urban farming space. If you’re big into computer vision, consumer products that are fun, and an awesome team we would love to chat. The Coop has an automatic door + cameras doing computer vision work (predator detection, egg alerts, remote health monitoring, etc). It's a super exciting time and are seeing directional product market fit which I'm thrilled about. Seriously go check out our website, it's a super fun + amazing product.

We’re a tight-knit team of 5 people with 15+ years of experience working together. We’ve been through YC, started and scaled multinational million-dollar businesses together, taking them from idea to acquisition by a Fortune 50 company. We’re gritty and passionate without taking ourselves too seriously - and we’re here to build something really exciting that helps people reconnect with their food and the planet. We're VC backed (call it $5M) by some of the world's best investors but we are a scrappy small team that moves fast. We have an absolutely fantastic CTO Ryan that I'm looking for his / our right hand person to work alongside with. I think the term full stack is overused but that's closest to what we're looking for. Also this really isn’t a traditional Eng role, I look at it as we’re a small growing team and you would be one of us working on a ton a cool projects on day 1. Also, we LOVE working with founders so if you've started a company before that's epic.

Oh also, I have a fun project where I want to make a water gun turret that uses our cameras to detect predators and allows you to aim and blast them. If you're into hacking robotics and gimbals etc, please reach out.

You can also reach out to me directly at: aj[at]coop.farm - Just email me your LinkedIn / GitHub / portfolio + why you think you'll be an awesome fit and I'll respond. Please don’t use GPT too much. This is my 3rd company (2 have exited) and I want to build the super solid core team and you might be the perfect fit for us and vice versa. Bwok Bwok! AJ

Psiphon | iOS / Flutter Developer | Toronto (Hybrid) | Full-time

Psiphon is a VPN app used by millions of people to access the open internet in regions where it's restricted. Small team, software that matters.

We're building the next-gen client app in Flutter (iOS, Android, macOS, Windows) and need someone who can work across both iOS native and Flutter. Split is roughly 65% Flutter, 35% iOS native (Swift, StoreKit, entitlements, network extensions). You'll have mentorship from a senior iOS specialist for the deeper networking work.

Day to day: Feature development in Flutter, iOS platform integration (subscriptions, permissions, App Store), and occasionally going deep into network extensions and packet tunnel providers. Small team (~3-4 core devs), high ownership, low ceremony.

Looking for: Strong Swift experience beyond just UIKit/SwiftUI app dev, comfort with the iOS ecosystem (App Store process, provisioning, StoreKit), and willingness to context-switch between Swift and Dart in the same day. Flutter experience is a strong plus but not required if you pick up frameworks quickly.

Contact: hr@psiphon.ca

Fullstory | REMOTE (US), Atlanta USA | https://www.fullstory.com/

Fullstory offers privacy-preserving session replay and analytics for websites and mobile apps. Our session replays are nothing short of magical, and the combination with our automatic analytics creates eye-opening insights.

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Remote (US):

* Senior Manager, Security Engineering - $230~240k USD + up to 20% bonus - https://www.fullstory.com/careers/jobs/110896c1-25d8-4c96-82...

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Atlanta, US (semi-onsite, requiring 1 day per week in office):

* Senior Software Engineer, Web Capture - $145~170k USD + up to 10% bonus - JavaScript/TypeScript, React, Go (golang) - https://www.fullstory.com/careers/jobs/3b8d231f-ae95-4f95-84...

* Senior Data Engineer - $160~170k USD + up to 10% bonus - Go microservices, MCP server, dbt models - https://www.fullstory.com/careers/jobs/20dd3185-3313-4ac3-b1...

* Senior AI Automation Engineer, Finance - $135~145k USD + up to 10% bonus - https://www.fullstory.com/careers/jobs/4480a6d5-231e-420c-a6...

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We have additional roles open in sales and consulting. See the full list at https://www.fullstory.com/careers?utm_source=092xpqyAkV

You can expect regular raises & bonuses, equity, and benefits including: health insurance, 401k matching (Vanguard), annual learning stipend, unlimited PTO, parental leave, and more. I take about 4-5 weeks vacation a year, in addition to ~3 weeks worth of company holidays (federal holidays + the week of Christmas to New Years.)

Additionally, you get a 5-week sabbatical after 5 years of employment - I took mine about a year ago, and it was fantastic.

To apply, please submit your info on the website, and our recruiting team will get in touch with you. If you have questions, feel free to reply here or contact me directly. (I'm an engineer on the iOS team, but I'll do my best to answer questions.)

CLEAR | Senior Software Engineers (Fullstack & Backend), Data Engineers, Staff/Lead iOS Engineers, Engineering Managers & Directors, Senior Product Managers | NYC Onsite (4-5 days in-office w/ free catered lunch daily) | https://www.clearme.com/

CLEAR is building the secure identity company of the future. Our mission is to make experiences safer and easier—physically and digitally. With more than 38 million Members and a growing network of partners across the world, CLEAR's secure identity platform is transforming the way people live, work, and travel. Whether it’s at the airport, stadium, or throughout your everyday life, CLEAR unlocks the magic of frictionless experiences.

If interested, apply here --> https://grnh.se/e4e5dc881us

Puma.tech | Remote-first with PST overlap | iOS/MacOS, Android, Ai/ML, Growth | https://puma.tech

Hi all, I’m Yuriy, founder of Puma.tech. Prev. worked at Cloudant (YC S08), Meteor (YC S11), Parse (YC S11, Facebook/Meta), and explored AI/ML (computer vision for self-driving cars).

We have 2 products:

1. https://PumaBrowser.com: iOS & Android mobile browser with built in LLMs & wallets – private local alternative to ChatGPT. 1m+ downloads.

2. https://PumaAI.com: small research lab focused on privacy and reliability of AI based on our experience building Puma Browser.

Open Roles: Eng (iOS/MacOS, Android, Ai/ML, Browser Extensions), Based Social Media Intern; Internships: Eng, Design, Growth

We’ve raised a few rounds from some of the best builders in ai and crypto:

Protocol Labs (YC S14), Chris Larsen (Ripple), Anatoly Yakovenko (Solana), Illia Polosukhin (NEAR Protocol), Sridhar Ramaswamy (Snowflake CEO), Jason Warner (poolside.ai, ex-GitHub CTO), Don Ho (Orange DAO, Quantstamp W18), Evil Rabbit (Vercel), John Phamous (SF Compute) and other amazing builders.

How to Apply: email careers+hn [at] puma.tech with your GitHub, a note on what you're most proud of building and what you'd like to build next.

Thank you!

Radar Labs | Software Engineers (SRE, data platform, backend, full-stack, mobile) | Remote (US), NYC | Full Time | https://radar.com

- Radar is the geo-location dev tool

- Doing 1B+ API calls per day

- Our main languages are Rust and TypeScript, we also use mobile and offline pipeline languages (Python, Scala, and Terraform).

- We're based in NYC with our HQ in Union Square and remote friendly (US)

Interesting things we're working on:

- HorizonDB, our Geospatial database written in Rust

- Precise indoor location more accurate than iOS and Android leveraging Ultra-Wideband, other mobile sensors and ML.

- Anomaly detection to identify spoofed locations

- Mobile infrastructure that automatically configures itself optimizing battery-life and location accuracy for different use-cases over time

- Multi-Region AWS K8s deployment, 99.99%+ availability

- Frontend tools to visualize and debug location data at scale

Check out our jobs page here: https://radar.com/jobs#jobs If you have any questions, feel free to reply here or you can e-mail me at tim@radar.com

Neurotone.ai || Remote (Americas East / Western Europe) || Full-time || neurotone.com

We build AI-assisted auditory training for people with hearing loss. Our product is live, in clinics, and growing internationally.

Backend Engineer: Postgres-heavy work on Supabase: PL/pgSQL functions, pgmq queues, Deno edge functions, billing and cron systems. You like databases enough to enjoy writing triggers and RLS policies, and you want to own systems end-to-end rather than just ship tickets.

QA Specialist: Manual testing of our iOS/Android app and web tools, working alongside our head of QA on a clinical product where data quality, platform stability, and accessibility are critical to our mission.

Note: Candidates must be in time zones no further west than EST; Western Europe is fine.

If interested, contact travis AT neurotone.com. Join us in making a difference!

Twindo (Formerly Canvas; The Spatial Computing Company) | Full-time | Remote

At Twindo, we’re working on spatial computing - using computer vision to 3D reconstruct and understand your surroundings so that software can operate over real-world spaces.

Twindo brings together everything that professionals need to understand the spaces they design, build, and manage, without extra site visits or second-guessing. With a quick scan or plan upload, any space becomes structured, accurate, design-ready data your whole team can actually use.

Full Stack Engineer (Latin America Remote) Backend Engineer (Latin America Remote)

For detailed information check out https://www.twindo.com/careers/

Keywords: 3D, computer vision, photogrammetry, geomatics, SLAM, CAD, iOS, Python, Django

MixRank (YC S11) | Software Engineers | 100% Remote (Global) | Full-Time

MixRank processes petabytes of data every month through web crawling. Hundreds of customers use our data products, including Google, Amazon, Facebook, Intel, and Adobe, across industries such as finance, recruiting, sales, marketing, and security. We’re a fully remote company with a global footprint across 20+ countries. We’re growing, profitable, employee-owned, and have no dependence on outside funding. Applicants from all geographies and backgrounds are welcome.

We’re looking for passionate individuals for whom programming is not just a job, but something they genuinely love to do. We’re obsessed with computers, programming, big data, databases, compilers, hardware, math, data science, and the internet. Does this sound like you? Please apply to join our team.

Our codebase is friendly to new contributors. You’ll have a fully functional development environment within hours through full automation and will be pushing commits on your first day. Deployments to production happen multiple times per day and finish in under two minutes.Effectively all of our codebase is written in Python, Rust, SQL, JavaScript/TypeScript, and Nix. The core technologies you’ll need familiarity with to be productive are Python, PostgreSQL, Linux, and Git.

We operate at a larger scale than typical startups. We run two datacenters with high-performance servers we’ve built ourselves, capable of handling the volumes of data we process. We’ve implemented our own distributed file system, perform full-scale web crawls, and download and run static analysis on the entire universe of published Android APKs and iOS IPAs.

Unlike a typical startup where you might spend half your time in meetings and the other half fixing Jira tickets, at MixRank you’ll challenge yourself with difficult technical problems that help you grow as an individual. We’re continuously hiring for the positions below; these aren’t singular roles that close once filled. Our philosophy is that the candidate is more important than the position. For each new member of the team, we design a custom role and responsibilities around their interests.

Other companies may create a long list of specific requirements with the expectation that you’ll exactly replace someone on the team or fit a role defined by committee. MixRank is more pragmatic: we first get excited about bringing a unique individual onto the team, then figure out the best way to support their specific talents.

Junior Software Engineer - Remote (Global), Full-Time

We’re looking for remote junior engineers with 0–3 years of professional software experience and 5+ years of curiosity exploring computers, programming, and technical hobby projects.

This is an open-ended entry role with mentorship and diverse opportunities to work across all areas of our product: databases, distributed systems, infrastructure and tooling, data analysis, machine learning, frontend/backend web development, APIs, data mining, data modeling, and more.

To stand out, please highlight what makes you unique: passion for computing, curiosity and side projects, work ethic, niche research, or anything else that shows how you think and build.

Ideally, you’ve already graduated. But if you still have one or more years left of school, please feel free to apply anyway. If you’re the right fit for the team, we’ll figure out a way to accommodate your schedule.

Apply here: https://www.ycombinator.com/companies/mixrank/jobs/Fnwsojk-j

Software Engineer - Remote (Global), Full-Time

We’re hiring generalist software engineers to work on web applications, data mining, machine learning/data science, data transformation/ETL, data modeling, database scaling, infrastructure, DevOps, and more. We’ll tailor the role to the subset of areas that best match your interests.

Beneficial experience includes PostgreSQL, Python, Rust, Linux, TypeScript, Nix, frontend/backend web development, and data mining.

Apply here: https://www.ycombinator.com/companies/mixrank/jobs/RXQspen-s

I’m Kiran, Chief of Staff at MixRank, a fully remote data startup building go-to-market intelligence. We’re US-incorporated but hire globally, and we’re bringing on new teammates to join a fast-moving team with real ownership and impact.