Konvu | https://konvu.com/ | Software Engineer | FULLTIME | ONSITE | Paris, France

At Konvu, our mission is to make security invisible. As AI transforms how code is generated, tested, and deployed, application must evolve too. Vulnerabilities should be automatically detected, prioritized, and remediated—without burdening engineers.

Behind Konvu are founders with deep roots in the security industry. As part of the founding team at Sqreen YC W18 (acquired by Datadog), we have firsthand experience in driving security solutions from concept to global impact.

We’re looking for:

* Application Security Engineer (Entry-level / Intermediate) https://jobs.ashbyhq.com/konvu/d46947df-8172-4b4d-b1d8-e3b6b...

* Software Engineer - AI Agent (Expert) https://jobs.ashbyhq.com/konvu/b40839d0-768b-4e80-a066-3d7cc...

* Software Engineer (Intermediate) https://jobs.ashbyhq.com/konvu/be7be978-08be-4672-a9e5-a559e...

* Head of AI https://jobs.ashbyhq.com/konvu/403ecd3d-7845-47d7-b24c-1fe18...

* Founding Account Executive (Enterprise) https://jobs.ashbyhq.com/konvu/dbac9d61-ab2d-4506-9315-28323...

Read more about how we're building Konvu the YC-way: https://konvu.com/blog/yc-culture

RhythmScience | https://www.rhythm360.io | Multiple Roles | REMOTE (US-Based Preferred) | Full-time

RhythmScience is a cardiac data management company turning complex healthcare data into actionable insights for providers and patients. We're a remote-first team building software that directly impacts cardiac patient care.

If you enjoy building reliable software alongside experienced and respectful colleagues, we'd love to hear from you!

Data Engineer - Build and maintain ETL pipelines, data models, and analytics infrastructure. 3+ years experience with Python, dbt, BigQuery, and orchestration tools (Airflow/Dagster).

Software Engineer - Ship features across backend and frontend, automate clinical workflows. 3+ years with Python/Django, Vue, PostgreSQL, CI/CD, and observability tools.

Senior Software Engineer - Scale K8s infrastructure, build test automation, partner directly with other technical teams. 5+ years, expert Python/Django, K8s, AWS. Healthcare/HIPAA experience preferred.

Email your resume and a few words that best describe your career trajectory Email is hidden

TryHackMe| Growth Engineer | Remote - UK/EU |https://careers.tryhackme.com/jobs/6527370-growth-engineer | €60-100k

TryHackMe is the fastest-growing online cyber security training platform. Our mission is to make learning and teaching cyber security easier by providing gamified security exercises and challenges. Having only been around for handful of years, we've grown to more than 6 million community members and our growth isn't slowing down! We’re looking for a Growth Software Engineer to join our cross-functional Growth teams. You’ll blend full-stack engineering with experimentation - shipping code that directly moves acquisition, activation, and retention metrics.

Our interview process is 3 rounds -and very fast. Please apply or email me for more details Email is hidden

Remake.ai | Founding Software Engr (or Cofounder) | Full-time | Remote (worldwide)

Apps for robots - home vacuums, quadrupeds, drones, humanoids, etc. Think Apple remaking ordinary phones into smartphones with apps & app store - only for robots.

Status: $1M pre-seed, prototype MVP works, pre-traction, ~16K ARR, manufacturing partnership(s) forming, headcount 2 full-time + 3 part-time

Founding Software Engineer (or Cofounder) - full stack, ML, embedded

Email iliao at remake dot ai

Column (https://column.com/) | San Francisco, CA (ONSITE) | Full Time | Software Eng (Infrastructure), Software Eng (Backend), Software Eng (Product)

Column is building the infrastructure that powers the US dollar globally. We're a software first company, but also own a nationally chartered bank that we've built from the ground up. We're currently processing trillions of dollars annually (yes, that's with a T), supporting some of the largest and most sophisticated companies out there like Wise, Bilt, Brex, Ramp, Mercury and dozens of others.

Started by the founder of Plaid (plaid.com), Column is focused on keeping an extremely lean and experienced team: currently 10 engineers that all report to the CEO. We are looking for an ambitious infrastructure, product, and backend engineer (one of each) that want to build incredible software from first principles.

Profitable and 100% owned by employees and founders.

Apply here: https://column.com/careers

Feel free to email me with any questions: praful@

Arcol | Senior Software Engineer | NYC, SF, or Remote (US/Canada) | Full-time

Arcol (arcol.io) is a small, high talent density team building the future of building design - a future that's collaborative, fast, and intuitive. We're a web-native, fully collaborative 3d design tool modernizing the experience of architectural design for teams of all sizes.

We're looking for senior engineers with experience in modern web technologies - some of our key technical building blocks are Typescript, Rust, wasm, WebGL - and a strong ownership mindset. Experience with computational geometry, computer graphics, or similar a strong plus. This role sits at the intersection of solving deep technical foundational challenges with shipping a product that solves real problems for real people.

Reach out to me directly at Email is hidden or peruse our careers page (https://www.arcol.io/careers) - we'd love to hear from you!

Greptile | Software Engineer (junior, senior, staff)| San Francisco ONSITE | https://greptile.com

Greptile is building AI agents that catch bugs in pull requests. Over 2,000 teams including Brex, Whoop, and Substack use Greptile to review nearly 1B lines of code every month.

We're a team of ~20 in San Francisco, working on things like better agent evals and sandbox execution environments.

We've raised $30M to date, including our recent Series A led by Benchmark.

Stack: Typescript

Open roles: greptile.com/careers

Salary ranges: $140k-270k base (depending on seniority) + $40-100k/yr equity

At Peregrine, we are transforming the way organizations engage with their data, making it easily accessible and immediately actionable for those who need it, when they need it most.

SF / NYC / DC | In-office | Full-time | $130,000 - $275,000

Senior Infrastructure Engineer (UK) https://grnh.se/6c1kjk525us

[Leadership] Engineering Manager (SF) https://grnh.se/s7yxefzs5us

[Leadership] Staff SWE, AI (SF) https://grnh.se/0w7ot24o5us

Staff SWE, Product Security (SF / NYC) https://grnh.se/b2kbmt3j5us

SWE, AI (SF, NYC, DC) https://grnh.se/yl9kuqrg5us

Sr Software Engineer (SF, NYC, DC) https://grnh.se/gwf63pot5us

Sr Product Designer (SF / NYC) https://grnh.se/s96svypy5us

Sr Design Engineer (SF) https://grnh.se/z8ev1cgu5us

Product Manager (SF) https://grnh.se/kyvpq2ww5us

Onton.com | Fullstack & Research Engineers | San Francisco, CA | Hybrid

Join us in pioneering the future of e-commerce search. 1M+ MAU growing rapidly. Large seed round raised from top-tier VCs and individuals with backgrounds from Google, Amazon, OpenAI, Stitch Fix, Whatnot, Stripe, and more.

We're a hard-working team of 10. We have an office in Jackson Square with a great view that we're looking to fill with other high-performance people!

Tech-wise, it's React/Typescript + Julia, if that's interesting (no worries if you haven't used it). We've also built our own graph and vector DB to cope with the scale, and the foundations of a neuro-symbolic AI agent that learns more about the world on every search!

Job posting and more information here → https://onton.com/careers

We read and respond to every application.

Stellar (https://stellarcs.ai) | Founding Software Engineers | Amsterdam, the Netherlands | Full-time | No Visa Sponsorship

Stellar is building the go-to AI voice agent platform for customer support, enabling incredibly human-like customer service over the phone. We're a young and rapidly growing startup that has already proven traction, with a number of well-known companies among our initial customers.

To see some of our AI voice agents in action, see https://www.stellarcs.ai/demo-showcase

We're looking for founding software engineers to help us scale Stellar's platform globally. As one of the first members of our engineering team, you’ll play a key role in Stellar's journey and have the opportunity to help shape our architecture, engineering culture and product and engineering roadmap.

Tech stack: Go, Node.js, Typescript, React, Next.js, Encore Cloud, GCP

What you’ll do:

- Build performant APIs and backend services in Go and Typescript (Node.js)

- Develop Stellar's frontend in React, TypeScript and NextJS, to allow companies to effectively design, test, deploy and monitor their AI voice agents

- Design a scalable, fault-tolerant system architecture that can handle large volumes of concurrent real-time audio conversations & agent interactions while maintaining low latency

- Work on Stellar's AI agent framework, at the intersection of software engineering and AI engineering

- Design and implement a platform that meets enterprise standards in terms of security, compliance, resilience and data privacy

- Build API integrations with external systems to enhance the capabilities of Stellar's agents

- Help shape the early engineering culture as one of the first hires of a young and growing tech startup

Why join: you'll be joining at a pivotal time in our growth, in a role with a high degree of ownership and strong growth potential. Join a small but talented team, coming from high growth startups and scale-ups such Framer, MessageBird and Adyen.

More details about the role here: https://www.stellarcs.ai/careers/software-engineer

Apply: Send us an email at Email is hidden, and mention you came from HN. Note that we do not provide visa sponsorship, and will only proceed with candidates who are able to work from our office in Amsterdam (~4 days in-office per week)