Unto Labs | Systems Engineer | San Francisco, CA | ONSITE (Hybrid OK), REMOTE (US) | Full-Time | https://jobs.ashbyhq.com/unto-labs/13df6bea-b253-4c80-ae05-5...

We recently announced $14.4 million in funding to make blockchains & digital assets useful for the world. Founded by Jump Crypto alumni and core contributors to the Solana protocol and the Firedancer client (https://github.com/firedancer-io/firedancer), we’re tackling fundamental scalability, performance, and usability challenges in distributed ledgers. Our runtime conforms to the RISC-V specification—moving away from domain-specific VMs, DSLs, and bespoke compiler toolchains that limit developer and institutional adoption. Components are developed in C for maximal control over performance and resource usage.

Interesting problems you’ll tackle:

- Building and testing high-performance subsystems in C (cryptographic routines, consensus primitives, networking protocols)

- Designing robust process isolation on modern CPU architectures and tile-based multi-core layouts

- Optimizing memory hierarchies, cache utilization, and low-level I/O for commodity servers

You:

- 5+ years of systems programming in C/C++, Rust, or similar

- Deep expertise in CPU microarchitecture, memory subsystems, and low-level performance tuning

- Strong understanding of distributed systems design and consensus protocols

- Experience with high-performance networking and protocol design in real-time environments

Apply: https://jobs.ashbyhq.com/unto-labs/13df6bea-b253-4c80-ae05-5...

Wave3 Social | Marketing Director | Remote

Wave3 is a social club for men looking to build meaningful IRL friendships in the digital era. Our mission is to solve the growing male loneliness crisis. We host monthly mixers and exclusive events for members. The goal is to remove all friction to having the consistent interactions needed to build meaningful relationships.

We launched only last week and had immediate viral success, including reaching front-page of HN, leading to 10k+ unique visitors and hundreds of signups only in 3 cities. Now we are looking for a marketing leader that can help capitalize on that initial momentum by growing social channels, running paid ads, developing partnerships, and expanding to other cities with community managers.

To learn more, visit our website for yourself at https://wave3.social or contact me at Email is hidden

Levels.fyi | Backend & Frontend Engineer | Remote (India, Open to other countries) | Full-time | https://www.levels.fyi | $30-60k USD Levels.fyi's mission is to help every professional build a better career through the most accurate insights and services. We're building the future of compensation & hiring by centering ourselves around professionals.

You'll be joining a close-knit team of 4 engineers to work across our product verticals. You'll have the opportunity to lead and own new projects / initiatives from idea to production end-to-end (architecture to deployment). We move fast and have come an incredibly long way on a tiny team. We're looking for a self-starter and resourceful engineer with strong communication skills and experience building things from scratch.

Backend: https://levelsfyi.notion.site/backend-software-engineer-14f8... Frontend: https://levelsfyi.notion.site/software-engineer-frontend-1e3...

DuckDuckGo | Multiple Roles | Remote | Full-time | $178.5k + equity

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 Software Engineer, Windows Desktop App - $178,500 USD + equity — https://jobs.ashbyhq.com/duck-duck-go/47e569c6-f995-4955-a89...

Senior Android Engineer - - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/57eea673-2519-4afc-a9a...

Senior Backend Engineer - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/abb953ee-5bb7-4637-9f6...

Product Designer (Senior, Lead or Principal) $178,500 - $243,800 USD + equity https://jobs.ashbyhq.com/duck-duck-go/06c4084f-8044-4837-b1d...

https://duckduckgo.com/careers

Privy | NYC or Remote | Senior/staff engineering roles (forward deployed, backend, infra, frontend, security & more) | Full-Time | https://privy.io

Hi, I'm Asta, CTO at the identity and fintech infra startup Privy. We build a wallet and digital asset API that hundreds of companies integrate in order to onboard (50M+) users onto products built with blockchain infra and distributed systems.

Our mission is to power digital ownership for all users. We believe that using digital assets to power money movement online is the next frontier for user ownership and financial empowerment. We're building foundational infrastructure that enables this.

We're a small, high-ownership team building a product with incredibly scaled usage (>8M MAUs, massive transaction volume). We've raised $40M from Ribbit & Sequoia. We ship constantly, multiple production releases every week.

Seeq | https://seeq.com | Staff Software Engineer (Frontend, Backend) | REMOTE (Some crossover w/ PST required) | Full-time | $140k - $180k + equity. Salary range for US-based; local adjustments for other countries. Seeq creates cutting-edge data analytics software for industrial process data, serving sectors like pharmaceuticals, energy, and manufacturing. Our core product is a robust calculation engine capable of executing advanced math and machine learning algorithms on streaming time-series data. By leveraging generative AI, we enhance usability and accelerate outcomes for our users.

We've built up a great remote culture (e.g. annual meetups, a remote office app we created to collaborate) and a dev team that enjoys tackling hard problems that make a difference for our customers (dev blog for more: https://geeq.seeq.com/).

Staff Frontend/Full stack Engineer (React, Typescript, Kotlin): https://apply.workable.com/seeq/j/d08da1a63c/

Staff Backend (Kotlin, Java. Bonus for experience with search like Elasticsearch, Mellisearch, etc): https://apply.workable.com/seeq/j/38d9c7897c/

Senior Plaftorm Engineer (Kubernetes, Terraform, Grafana): https://apply.workable.com/seeq/j/0c6a35bde5/

FusionAuth | Senior Application Security Engineer | Denver, CO, USA ONSITE 140k-200k

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 unique deployment model (self-host on-prem or in your cloud or run in our cloud)

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

* a relatively mature product (the code base is over eight years old and we've found and fixed a lot of the sharp edges around core login use cases; however there are plenty more features to add)

* founder-led; the CEO is an engineer who still writes code

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

If you are passionate about technology and want to join a company moving the industry forward, FusionAuth might be a great fit for you. As mentioned, our core software is commercial with a "free as in beer" version. We also open source much of our supporting infrastructure.

Technologies and standards that we use or implement: Modern Java, MySQL, PostgreSQL, Docker, Kubernetes, OAuth, SAML, OIDC.

Learn more, including about benefits and salaries, and apply here: https://fusionauth.io/careers/

Click/tap the 'View open positions' orange button.

ROCKSTAR GAMES | NYC-San Diego-New England| FULL-TIME | .NET SOFTWARE ENGINEERS | Existing Visa Transfers Welcome

A career at Rockstar Games is about being part of a team working on some of the most creatively rewarding and ambitious projects to be found in any entertainment medium. You would be welcomed to a dedicated and inclusive environment where you can learn, and collaborate with some of the most talented people in the industry.

RESPONSIBILITIES

Develop highly scalable server-side features for our online game console clients using object-oriented development in C#, ASP.NET, and SQL Server.

Develop back-end services and APIs. Actively practice Test Driven Development (TDD) while developing new features and refactoring existing code.

Work in an AWS cloud-based, event-driven microservice architecture with a high priority on web performance optimization.

Collaborate with other Rockstar technology teams across our worldwide studios.

New York: https://grnh.se/01daf4583us

San Diego: https://grnh.se/87116de23us

New England: https://grnh.se/3d1c2f9a3us

You can see our other openings here: https://www.rockstargames.com/careers/

Perpay | Senior Full Stack/Backend Engineer + Engineering Manager | Onsite in Philadelphia, Full-Time

Perpay is building financial products backed by users' paycheck direct deposit. We believe everyone deserves a chance to improve their financial future, and we’re dedicated to building simple and inclusive financial products that help our members create healthy habits and achieve economic stability.

We're looking for:

- A few Senior Full-stack Engineers (6+ years, and a preference for backend-leaning) across our 3 product engineering teams. We highly value product-mindset, experience building production web apps for real users, and ability to coach and support more junior engineers.

- An Engineering Manager for our Card team (currently 4 Engineers + 2 offshore contractors). Ideally, you have at least a year or two of experience leading people and being accountable for a team's execution, roadmap, and performance. You would be the third "line manager" on our team, and so there's ample opportunity to grab org-wide initiatives that are interesting and impactful.

Our stack includes AWS, Postgres, Python/Django, React/Redux, Datadog

Some other company notes / benefits: Open PTO policy, full health/dental/vision, remote weeks around major holidays + extra holiday on weekends like MDW and LDW, catered lunch 3 days/wk, 401k w/ solid match, cell phone plan, gym subsidy, and some student loan repayment match

Check out the full JDs here https://perpay.com/careers#open-roles , and feel free to reach out directly! karl at perpay dot com

TestDriver.ai | https://testdriver.ai | QA, Engineers, Customer Support | Austin / Remote | Full-time / Part Time 95% of companies are still wasting time manually testing due to shortcomings in Playwright, Cypress, and other frameworks. Developers rank testing as the #1 blocker to release.

We've built an AI Agent that performs manual testing on it's own VM with complete desktop access. It works like a specialized "Claude Computer Use."

We're scaling our early sales and seeking QA engineers, customer support, and sales engineers.

Please DM Email is hidden