Doubling is building a new mobile product in the health and wellness space. Small founding team, mission-driven, 0-to-1 stage.
We're looking for a Design Engineer to own the mobile UX end-to-end: product design, motion / interaction design, and code contributions where it helps the team move faster. The core of the role is product and motion design; code contributions are valued but not the primary skill we're hiring for.
Stack / tools: Figma, React Native, plus at least one motion or prototyping tool (Rive, Lottie, After Effects, Principle, or Framer).
What we want: 2+ years combined in product design and motion / interaction design, at least one shipped mobile product, a portfolio that demonstrates both UI and motion work, and enough comfort in a frontend codebase to land small UI tweaks and animations (or genuine interest in growing into that).
Bonus: prior consumer health, wellness, fitness, or nutrition product experience; design system ownership; founding / first designer at a startup.
Must be authorized to work in the U.S. as an independent contractor. No visa sponsorship for this role.
Details: https://www.doubling.io/careers/design-engineer Apply: careers@doubling.io
We’ve seen tremendous traction and are growing extremely quickly. Our real-time APIs have helped verify hundreds of millions of identities, starting with financial services and rapidly expanding into new markets. SentiLink is backed by world-class investors including Craft Ventures, Andreessen Horowitz, NYCA, and Max Levchin.
SentiLink supports a variety of ways to work, ranging from fully remote to in-office. We operate as a digital-first company with strong collaboration across the U.S. and India. We maintain physical offices in Austin, San Francisco, New York City, Seattle, Los Angeles, and Chicago in the U.S., and in Gurugram (Delhi) and Bengaluru in India. If you’re located near one of these offices, we would love for you to spend time in the office regularly. Some roles are hybrid or in-office by design. For example, our engineering team in India works primarily from our Gurugram office.
We’re a small, high-impact team solving one of the most interesting and adversarial problems in fintech: how do you build systems that reliably determine whether a real human is on the other side of a financial transaction?
We’re hiring across Engineering (Full-stack and Infra) and Data Science / ML roles. Hiring at Manager level as well as mid-level/Senior levels.
We’re language-agnostic and hire for fundamentals. Across the team you’ll see: • Python, Go, Rust, Scala • PostgreSQL, Snowflake • Kafka, Redis • Terraform, Kubernetes • ML: XGBoost, PyTorch, Feature stores, real-time scoring pipelines
If you love solving complex distributed systems challenges, building customer-facing ML products, or working on detection systems that must be both high-precision and low-latency, you’ll fit right in.
Roles are here: https://jobs.ashbyhq.com/sentilink?utm_source=hacker_news
If you have questions, feel free to reach out directly at liz.woodfield at sentilink dot 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.
As our QA Engineer, you'll assist in improving the quality of Rinse's software, which services our customers, valets, vendors, and warehouse personnel. You'll be involved in the full project lifecycle, from idea through documentation and feedback. You'll also drive software quality through testing, collaboration, and documentation.
We're a tiny team tackling big problems, so our technical staff enjoys considerable autonomy, flexible schedules, and ambitious projects with clear and meaningful impact on our business.
This season, we're particularly interested in new grads or junior engineers, to round out the team. 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, Mobile QA, Mobile Testing, Test Automation, Test Engineer
* Quantitative Researcher for Monetization
* Quantitative Researcher for Portfolio Optimization
* Quantitative Researcher for Congestion Revenue Rights (CRRs)
* Power Market Researcher
* Surety Director
* Growth Lead
* Originations Lead
Comity is on a mission to improve the reliability, transparency, and efficiency of our energy systems, fostering a future with sustainable and abundant energy. To accomplish our aims, we’re leveraging state of the art statistical learning and convex optimization methods (AI) to build the financial rails of our future energy systems.
We envision energy systems that are efficient, autonomous, resilient, and powered by 100% renewable energy.
You can read the full JD and apply here: https://jobs.ashbyhq.com/comity
Building a dynamic runtime on top of the Linux BPF sub-system. Looking for extremely talented / passionate Rust developers / Backend Engineers with a deep interest in Linux internals, Distributed Systems, Dev Tools, Great Developer Experiences and Systems programming.
Experience working with distributed systems AND / OR writing highly-concurrent, performant multi-threaded Rust is a must.
Feel free to tell us all about your favorite GNU core utilities / Linux system calls / kernel sub-systems at: work [at] yeet.cx
You can visit us at https://yeet.cx/
Or try our interactive sandbox at https://yeet.cx/play
For more jobs check out https://yeet.cx/careers
YASSI provides real-time access to vehicle title, lien, and registration data directly from U.S. state motor vehicle agencies. Unlike traditional bulk data providers, YASSI retrieves each vehicle record live at the time of request, ensuring the most accurate and current information available.
YASSI is the only provider offering an enterprise-grade solution purpose-built for real-time vehicle data at national scale. In addition, YASSI is uniquely positioned as the only platform that combines real-time vehicle record access with digital repossession title processing, enabling lenders to verify lien status and complete repo titling workflows within a single, integrated solution.
We’re rethinking how vehicle data, titling, and compliance infrastructure works— bringing real-time connectivity and transparency to an industry that’s long overdue for modernization. We are already profitable 6 years in. That is unique for a start-up.
Actively building out our engineering team in downtown Chicago and we are open to senior/staff level.
Job description here:
Sr. Full-stack Engineer - https://apply.workable.com/yassi/j/60C534A983/
Email at: patti -dot- lopez - at - yassi - com
Opendate is the operating system for live music venues — booking, ticketing, marketing, and settlement, all in one place. We replace the tangle of spreadsheets, holds-and-confirms email chains, and ticketing platforms that independent venues, promoters, and festivals have been duct-taping together for decades. Customers range from 200-cap clubs to multi-day festivals.
We're a Rails shop with real backend problems: multi-tenant ticketing at on-sale scale, financial settlements that have to reconcile to the penny, and integrations with the rest of the music industry's plumbing (Stripe, Dwolla, Seats.io, Twilio, SendGrid). If you like systems where correctness actually matters and the users are people you can go meet at a show, you'll fit in.
Stack: Rails, React/Redux, PostgreSQL, Redis, BigQuery, AWS, GCP, Docker, Terraform. Flutter on mobile. AI-first engineering culture — Cursor, Claude Code, and Copilot are part of the daily workflow, not banned from it.
100% remote within the US (no sponsorship), with optional Indianapolis or Chicago offices if you want them. Looking for 5+ years of senior full-stack experience, comfortable owning projects end-to-end and shipping to production weekly.
Apply: https://www.opendate.io/careers/senior-full-stack-software-e...