Tango is a live-streaming platform with 400M+ registered users — high-scale B2C at the intersection of video streaming, creator economy, and social features. I'm an Engineering Manager building two product teams focused on activation and retention. Looking for engineers who take ownership and push back when something doesn't make sense. Backend: Java 17–21, Spring Boot, GCP, Apache Kafka, MySQL, Redis, Aerospike Frontend: React 16+ (hooks), TypeScript/ES6+, Redux + Redux Toolkit, SASS, Jest Android: Kotlin/Java, Dagger2, Compose UI, Kotlin Flows, Coroutines Open roles:
Senior Backend Engineer Senior Frontend Engineer Senior Android Engineer QA Engineer (automation-focused)
Relocation to Limassol, Cyprus: full relocation package, work permit + residence permit for spouse, hybrid (1 remote day/week), stock options, competitive salary + performance bonus, medical insurance, meals in office. Careers: https://business.tango.me/careers Direct contact: https://t.me/joetribbb
We are hiring a Mobile Software Engineer with extensive experience in Android (Kotlin/Jetpack Compose) and iOS (Swift/SwiftUI). The salary range for this position is $110,000 - $155,000, depending on experience level.
You must be a U.S. citizen for this position
Please apply here: https://apply.workable.com/revelare-networks/j/3B32865D60/
LingoLooper is a language learning game (1.4M+ downloads, iOS/Android) where users practice real conversations with AI avatars. Play life abroad to learn a language faster.
We've grown almost entirely through organic short-form content. We're hiring a Lead Content Strategist to own our content operation: directing UGC creators, analyzing performance data to build repeatable formats, running structured experiments, and building the systems that scale output. Think content strategy as engineering; hypothesis-driven, iterative, data-informed.
Starts ~30h/week ($750/week + performance bonuses), designed to convert to full-time with exit participation. You'll work directly with the founders.
Apply here: https://tally.so/r/GxJvAQ
Instinct Science is the AI leader in veterinary medicine. We build the industry's first clinical intelligence platform — combining a cloud-native EMR, AI-powered scribing (ScribbleVet), real-time clinical decision support, and Plumb's drug information — in one system that helps veterinary teams work smarter, not harder. We acquired ScribbleVet in early 2026 and are building out its next chapter.
This role is embedded directly in the ScribbleVet product team. You'll own the mobile app used daily by thousands of veterinarians to automate clinical documentation.
WHAT YOU'LL DO: - Build and own cross-platform features end-to-end in React Native (iOS + Android) - Identify and resolve performance bottlenecks — state management, native bridges, CI/CD - Ship real AI-powered features alongside a small, high-output team - Collaborate closely with design, product, and backend engineers
WHAT WE'RE LOOKING FOR: - Deep React Native expertise with production mobile app experience - Strong product instincts and QA discipline — you care about what you ship - Actively using AI coding tools
STACK: React Native, Expo, TypeScript, GraphQL
Apply: https://instinctscience.applytojob.com/apply/4Yj4DavJ6D/Seni...
Perry Street Software publishes Jack'd and SCRUFF, two of the world's largest LGBTQ+ dating apps on iOS and Android, is hiring a Senior Ruby Developer
Our brands reach more than 30 million members worldwide, so members can connect, meet and express themselves on a platform that prioritizes privacy, security, and community. As a Senior Ruby Developer, you will help build our Ruby API powering our family of LGBTQ+ mobile dating apps. We are looking for engineers who are passionate about architecture and monads! Ok just kidding about the last part -- but you can see more about our approach to API development in our Medium blog series at https://medium.com/perry-street-software-engineering/clean-a.... The position is 40 hours per week and ongoing/full-time.
Please mention Hacker news in your cover letter.
We're hiring continuously for the positions below— they aren't singular positions that will close once filled. Our philosophy on hiring is that the candidate is more important than the position. For each new member of the team, we design a custom role and responsibilities that are specialized to their interests. Other companies will come up with a long list of specific requirements for a position with the expectation that you'll exactly replace someone from the team, or that you'll be the perfect tetris piece that satisfies the job requirements decided by a committee. MixRank is more pragmatic: we'll first get excited about having a unique individual on the team, then we'll figure out the best way to accommodate their specific talents.
-- Junior Software Engineer - Remote (Global), Full-Time
We're looking for remote junior engineers that have 0-3 years of professional experience in software, 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 on 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, etc.
Ideally you've already graduated, but if you still have one or more years left of school, please feel free to apply anyway, and if you're the right fit for the team we'll figure out a way to accommodate your schedule. 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 cater the role to whatever subset of these areas match your interests.
Beneficial experience includes PostgreSQL, Python, Rust, Linux, TypeScript, Nix, frontend/backend web development, and data mining.
https://www.ycombinator.com/companies/mixrank/jobs/RXQspen-s...
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I’m Kiran, Chief of Staff (CoS) 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.
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 3 products:
1. https://PumaBrowser.com – iOS & Android mobile browser with built in LLMs & Wallets. Private by design. 1m+ downloads.
2. https://PumaAI.com – privacy layer between you and LLM providers.
3. https://PumaClaw.com – (just starting to build) easier way to run and manage your Claws from the phone.
Help building either or all is much appreciated.
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 crypto and ai:
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!
We are looking for candidates that are excited to join us on a mission to raise the standard of trust online. All of our roles are fully-remote, except where specific locations are noted.
Most of the software engineering positions have been repeating here for years because we've been continually hiring for them, scaling our whole team to now over 300 people—many of those hires have come through Hacker News. We've been improving our hiring process over time, and we know some good candidates may have fallen through the cracks. Some people who tried in the past have had success going through it again, and we still pay for hiring projects.
Senior Android Engineer - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/57eea673-2519-4afc-a9a...
Senior iOS Engineer - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/a1239b43-0c9a-45a4-b35...
Senior IT Ops Engineer - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/3fbdaa82-b135-46dc-b90...
Senior Web Security Engineer, Browser Platform - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/12b7b49c-ee06-4d70-850...
Senior Manager, Integrated Media Planner - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/6f04b627-4f35-4978-a8c...
Director, Business Development (Remote within USA)- $243,800 USD + equity https://jobs.ashbyhq.com/duck-duck-go/30f53ccd-9714-4bee-9d5...
Director, Product Management - $242,800 USD + equity https://jobs.ashbyhq.com/duck-duck-go/2a379a3e-ee10-45d2-927...
Senior Legal Counsel - Subscriptions - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/4ebedcfb-c89f-4cab-bf1...
Immich is on a mission to provide a secure and private home for your most precious memories through our high-performance, self-hostable photo and video backup solution.
Grayjay is a privacy first media application that lets users follow creators, not platforms. The app aggregates content from multiple video sources including YouTube, Rumble, Twitch, PeerTube, Odysee, and more, into a single unified experience. Grayjay gives users full control over their viewing experience.
Roles currently available:
Mobile Developer - Immich : https://futo.tech/jobs/mobile-developer-immich
Android/iOS Mobile Engineer - Grayjay : https://futo.tech/jobs/mobile-engineer-grayjay
Plugin Engineer - Grayjay : https://futo.tech/jobs/plugin-engineer-grayjay
More details and job postings here: https://futo.tech/jobs
To apply, send your resume and cover letter to jobs at futo dot org.
- 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.
- Extracting raw map data from satellite maps and the web leveraging ML and AI
- 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