Veridise | https://veridise.com | REMOTE | Full Time

About Veridise: Veridise performs security audits for smart contracts, zero-knowledge circuits, blockchain implementations, key management services, and other off-chain services like relayers, bridges, wallet integrations, and more. Additionally, many members of the Veridise team research and develop modern security tools designed to tackle the ever-changing landscape of blockchain development, providing novel and automated insights into the security of smart contracts and zero-knowledge circuits.

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Frontend engineer position: Veridise is seeking a skilled front-end software engineer who will be responsible for developing and maintaining a front-end for a SaaS platform that provides security and code review tools. This individual will work closely with backend engineers, static analysis tool engineers, and security analysts to implement features such as collaborative code review, vulnerability triage interfaces, and interactive visualizations of compiler data structures. In addition, this individual will be responsible for collecting feedback from customers to determine how interfaces can be improved to better integrate into their workflow.

Application link:

- https://veridise.com/careers/veridise-careers-frontend-engin...

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Security analyst position: Veridise is seeking a highly skilled and motivated security analyst. The ideal candidate will have a strong background in computer science, possess advanced technical expertise, and demonstrate a deep understanding of security principles. This role involves identifying and mitigating security vulnerabilities through manual code review, running cutting-edge security tools and analyzing their results, actively staying up-to-date on emerging security threats, and learning to audit in new and exciting technologies. Application link:

- https://veridise.com/careers/veridise-careers-lead-security-...

- https://veridise.com/careers/veridise-careers-security-analy...

Goblins | https://goblinsapp.com | Founding Engineer #3 | Williamsburg, New York | ONSITE | $100-200k (+ generous equity)

In education, we have always traded off scale and quality. In a 30-student math class, half of kids are ready to accelerate while half are still working on their foundational skills, but teachers cannot be in 30 places at once, giving each student one-on-one support.

Until now. Imagine 30 teachers in every classroom—that's how Goblins feels. Students draw math on any device, and our AI figures out the "why" behind their confusion, giving instant feedback and building conceptual foundations. (Preview: https://youtu.be/sh9uomzbmus)

Goblins launched to school districts in the spring of 2025. Since then we've built a waitlist of thousands of teachers and sold Goblins to districts across the US (we'll hit 100k+ paid students this year!). We are in the unique position of having a product that is both highly differentiated and demanded :)

Technical problems we've worked on in the past:

→ Building knowledge graphs that adapt to student performance in real-time, routing them to the optimal next problem they should solve to maximize learning and engagement.

→ Extending our handwriting recognition from digital canvas to real paper through Chromebook cameras (think real-time OCR on math equations through low-quality webcams with poor lighting and limited CPU).

→ Creating interactive mathematical lessons (think 3blue1brown, but conversational) that remediate student misconceptions.

You'll be joining founding team members Sawyer (CEO, former Head of Design at X1 [acquired by Robinhood] and math teacher) and Alp (CTO, ex-Stripe and Amazon), plus two other exceptional founding engineers.

We move fast, care deeply about craft, and obsess over delighting users. If you're interested, email Email is hidden :)

ToucanTix | Senior Ruby on Rails Developer | REMOTE (EU/US timezones preferred)

Your code will run the gates at zoos and theme parks across Germany and the USA. When families scan tickets, when capacity limits kick in based on visitors and available resources (staff, equipment, facilities), when dynamic pricing adjusts for weather - that's our Rails app making real-time decisions for thousands of visitors daily.

We're 5 engineers at ToucanTix (sister company Combase has 80+). You'd have serious ownership and architectural influence from day one.

Technical challenges that actually matter:

Multi-tenant architecture supporting 100+ venues with wildly different business logic. Offline-first POS that syncs flawlessly. Complex pricing rules (weather + season + capacity + customer type) that need to stay performant. Hardware integrations with access control and payment systems.

Stack: Rails 7+ API with GraphQL (graphql-ruby), PostgreSQL doing serious heavy lifting with multi-tenant architecture, Redis for speed-critical stuff, SvelteKit frontend (if you're full-stack curious), Google Cloud infrastructure (Cloudtasker, Cloud Storage), RSpec/Capybara keeping everything bulletproof

You: 5+ years Rails. Strong at PostgreSQL optimization. Have architected systems for performance and scale. Comfortable owning technical decisions.

Us: Real ownership. No layers of management. Async-first remote culture. Profitable company, not burning VC cash. Your work has physical impact - people literally can't enter the attraction if your code breaks.

Full details: https://www.toucantix.com/careers/senior-ruby-on-rails-devel...

Apply: Email is hidden - Send CV + one technical challenge you're proud of solving. Put in subject line.

Nango | Staff backend engineer | Remote | Full time | $120-200k + equity

Nango (YC W23) is an open source product: Developer infrastructure for product integrations. We power the integrations of Semgrep, Motion, Vapi, Exa, and hundreds of other B2B software.

Small but highly experienced team, hard technical challenges (scale + infra devtool running untrusted user code), tons of ownership, direct customer contact, growing very fast.

We are looking for a Staff engineer that can touch every part of stack and is passionate about dev infrastructure.

Website: https://nango.dev Jobs: https://nango.dev/careers

OpusClip | https://www.opus.pro | Burnaby, BC (Vancouver) | ONSITE | Full-time

Roles: 1. Senior/Lead Growth Engineer, AI Video Agents 2. Data Scientist

OpusClip is the world's No.1 AI video agent, built for authenticity on social media.

We envision a world where everyone can authentically share their story through video, with no expertise needed. Within just 18 months of our launch, over 10 million creators and businesses have used OpusClip to enhance their social presence.

We have raised $50 million in total funding and are fortunate to have some of the most supportive investors, including SoftBank Vision Fund, DCM Ventures, Millennium New Horizons, Fellows Fund, AI Grant, Jason Lemkin (SaaStr), Samsung Next, GTMfund, Alumni Ventures, and many more.

Check out our latest coverage by Business Insider featuring our product and funding milestones, and our recognition as one of The Information's 50 Most Promising Startups in 2024.

Headquartered in Palo Alto, we are a team of 100 passionate and experienced AI enthusiasts and video experts, driven by our core values:

Be a Champion Team

Prioritize Ruthlessly

Ship fast, Quality Follows

Obsess over customers

Be a part of this exciting journey with us!

Please apply on: https://jobs.ashbyhq.com/opusclip/9fc3459f-d8eb-4a40-b01e-bf...

Falconer | Lead AI engineer | Bay area, hybrid/onsite | $200-300k + equity

Falconer is building AI-powered knowledge tools for engineers. Knowledge management is a $30b industry, and we intend to build the tools that leverage AI to power the next generation of engineering knowledge. Our vision is to empower every engineer to write as well as the best technical writers, and enable every organization to have internal docs as great as the best external docs are.

We're currently a team of 8 from Stripe and Meta, currently turning our prototype into a generally available product.

Looking for an engineer experienced in evals, inference latency optimization, prompt caching, and LLM agent reliability. Or someone who just loves tinkering with the latest models and newly-published techniques, and wants to work somewhere you try them out in a real product that people use!

Apply at https://falconer.com/jobs, or drop your resume and a sentence or two about what AI knowledge workflows you would be excited to work on to Email is hidden

Sorare | Backend Software Engineer | ONSITE (Paris) | Full-time

Sorare is a fantasy sports gaming experience and marketplace featuring officially licensed digital player cards (minted as NFTs).

Tech Stack: PostgreSQL / Rails / GraphQL / React

We're hiring a replacement for a colleague who's leaving for a world tour.

If you want to read the objective offer you can find it below, but here is the subjective view of what makes me enjoy my job as a sofware engineer there:

- very competent and kind coworkers

- small team that moves fast and decides quickly

- passionate user community

- top work conditions

- bonus: as a sports fan this is heaven

Don't hesitate to reach to me if you have any question:Email is hidden.

Read more: https://sorare.com/careers?jid=c81d9cc6-4fcc-472a-a927-e6941...

zoetro.pe | Technical Staff | San Francisco, CA | ONSITE/REMOTE | Full-time We're an applied lab building deterministic and deep generative experiences. Our team has built AI models, games, and infrastucture at Tesla Autopilot, Epic Games, Scale.ai, Repl.it, Bun, and Lucasarts.

You will be building procedural simulation models and the supporting infrastructure and applications. We're a small team, so this means everything from CUDA kernels and Pytorch notebooks to web-apps. Our stack is multi-lingual and spans from very low to very high level code. We use both our own models and external providers.

Our team is hybrid-remote, being primarily based in San Francisco.

Our stack: Python (Pytorch/jax), Typescript(React etc), Rust/C++, Ghidra

We're looking for exceptional research engineers who aren't afraid to get their hands dirty. Experience with computational geometry or compilers/language design/formal methods is a plus.

Formal qualifications are less important than passion and skill. We're building our dreams, we hope you will feel the same.

If interested, email me at: Email is hidden

Y Combinator | Dogpatch, San Francisco, CA | Full-time, In Person | https://www.ycombinator.com

YC has been building ever-more ambitious software for founders to succeed -- since Garry returned. In the last year, our team delivered:

* Safe tools that has processed $1B+ in seed funding in last 4 batches

* Fundraising CRM for founders manage their fundraise -- used by all founders

* Work at a Startup has 1M+ candidates on it, with 1000s of hires/year

There are ton of ways we see YC Software benefitting our alumni and investors -- and we want founder/founding engineer minded people to drive each into standalone products.

Yet in reality, we're a team of 14 full-stack product engineers, the company is 85 people, and we intend to stay small and scrappy. I was the 7th engineer at salesforce and loved the early stage, and we get to be that way at YC... indefinitely.

YC is also knee-deep in applying AI tools and techniques across all of our product surface areas, and investor-focused work is no exception. We’re happy to share more when we chat in person.

We also want to work with people who love building full stack web apps. While our stack is Rails, React and Postgres, mostly we’re just a bunch of pragmatic builders who are excited about shipping and having impact.

Two roles are posted below: Investor Software and Post Batch (all SW after the batch).

If you're interested, read more below and email me directy with what you'd be excited to build here: Email is hidden.

* https://www.ycombinator.com/companies/y-combinator/jobs/vt20...

* https://www.ycombinator.com/companies/y-combinator/jobs/fk75...

ArcPrime | http://arcprime.com/ | Remote | Full Time | Full Stack Developer

ArcPrime just closed a seed round to build the best-in-class AI tools for Intellectual Property attorneys.

We have a world-class team of 6 engineers (CEO is an attorney as well) uniquely positioned to win the entire market. We thrive on execution speed, know our customer and domain to the most intimate detail, and are relentless.

We empower our people to do their best work and grow to their fullest potential. We value impact above all else. We offer highly competitive salaries and top-of-market equity. We plan on hiring fewer than 10 engineers for the lifetime of the company. If this sounds exciting to you, please apply!

Stack: React, Typescript, TailwindCSS, and Google Cloud

Email me with your resume to apply: jon @ domain

Job description: https://docs.google.com/document/d/1r3jzyv8yvmjgspvddyhwktzk...