FlowGen Labs | Founding Engineer | Full-time | ONSITE (San Francisco, US)

FlowGen Labs' mission is to make ERPs usable by humans again. We’re shipping AI agents as an interaction layer that automates routine steps, explains the “why,” and unlocks instant visibility across the business. We have been seeing strong customer traction, just closed a large seed round, and are well on our way to disrupting the space.

Application: https://jobs.ashbyhq.com/pear/59a35e98-18c4-48c0-a998-2f2691...

PowerSync | Senior Backend Engineer and Database Expert | Full-time | Remote (opt-in regional offices)

PowerSync is a sync engine that keeps your backend database in sync with on-device SQLite. We support Postgres, MySQL and MongoDB as source databases and have a plethora of client SDKS, many of which are integrated with popular libraries and frameworks on the client-side like TanStack DB, Drizzle, GRDB, Room, etc

Detail: https://journeyapps.com/join-us/senior-backend-engineer/

Our team is small and polyglot, but experience with TypeScript is a must.

If you're a database enthusiast and have a solid track record of building, deploying and maintaining backend systems on modern cloud stacks, you're already a candidate. Also, if you're passionate about open source and synced / local-first/offline-first apps, please apply.

Culture: We're agile and devops purists (before those terms got coopted)

Flax Health | Salt Lake City, UT (Remote-Friendly with Annual Travel) | Full-Time | Senior/Staff Full-Stack Engineer | flax.ai

Flax Health is building the operating system for post-acute care. Our AI platform automates clinical workflows to dramatically boost efficiency and improve patient outcomes. We’re backed by top VCs (Sorenson Capital, Pear VC) and growing quickly. Looking for driven, high-agency engineers who can make an impact on our product from day 1.

We're looking for: - Proven success in the fast-paced 0 to 1 stage of young startups (founding/pre-seed experience a plus)

- 5+ years of experience building web-based products (B2B SaaS ideal), with strong full-stack skills in TypeScript, Node.js, and DB design

- Strong hands-on-keys coding chops + experience building end-to-end systems

- Bias for shipping, learning, and iterating quickly

- User focus: you care about building things that solve real problems

- Experience with healthcare data (not required but highly valued)

Comp: $130k-$200k base + equity; health insurance; 401(k); paid parental leave; learning/development budget.

Apply: https://jobs.ashbyhq.com/pear/c18b5aa6-de9e-4b1a-957d-9208be...

Littlebird (Remote - US/EU/IST) - Sr Software Eng(s) - https://littlebird.ai

Littlebird is a smarter, personalized AI assistant that builds an understanding of your world, not your prompts. The company started in 2024 and has raised $5M+ seed. The team is now 25 people, remote, developer-led culture based in US, EU and IST.

You'll get to work across all parts of our AI stack, including search, infra, agents, voice, and data. We're looking for strong OOP skills, working on early products with e2e ownership. Our stack includes: python, TS, React/RN, Swift, Node, LLM's, Postgres, AWS

Contact: Email is hidden (subject: HN Hiring)

Oscilar.com | Sr/Staff Software Engineers & PMs | REMOTE (US/Canada/Poland/UK) | Full-time

AI Risk Decisioning™ platform that helps organizations manage onboarding, fraud, credit, and compliance risks

Open roles:

- Sr./Staff Java Backend Engineer (North America/Europe)

- Sr./Staff Infrastructure Engineer (North America/Europe)

- Sr./Staff GenAI Engineer

- Sr./Staff JavaScript Web SDK Engineer & Frontend Engineer

- Sr./Staff Android SDK Engineer & iOS SDK Engineer

- Sr./Staff Data Scientist and Data Engineer

- Full-Stack Engineer - AI Agent Platform

- Product Manager for AI & RiskOps/Case Management

Apply at:

https://jobs.ashbyhq.com/oscilar?utm_source=hackernews

Validity | https://www.validity.com/ | Boston - Remote (US) | Full-time

Validity is a suite of marketing tools used to ensure data quality, drive email performance, and provide advanced campaign analytics to leading brands.

Our Applications team is seeking a Senior Ruby on Rails developer to help expand our product line, improve our existing products, and build the next generation of Validity tools, continuing our mission to provide exceptional support to our growing customer base.

We're looking for someone with: - A strong command of Ruby, Ruby on Rails, JavaScript, and the architecture of large web applications at scale - Experience in taking projects from concept to completion - Strong communication skills; the ability to communicate clearly, effectively, and with empathy both within your team and cross-functionally - A proven track record of writing clean, maintainable, and well-tested code

Apply here: https://validity.applytojob.com/apply/9csl8hgg4r/sr-software...

Plush (Remote – US/Canada) — Founding ML/Search Engineer — $180K–$200K + equity + healthcare

We’re an AI-powered fashion search and styling engine that understands taste — think a stylist that actually gets you. Launched June 2024, now at 25K MAUs and growing fast.

You’ll build the core of our personalization and search systems, combining LLMs, embeddings, and real-time fashion discovery.

We’re looking for someone who:

Has 4+ years of experience in machine learning, search, or recommendation systems

Is authorized to work in the U.S.

Has genuine curiosity about fashion and discovery

Contact: Email is hidden

Location: Bratislava, Slovakia (comfortable with different time zones - partly overlapping etc.)

Remote: Yes

Willing to relocate: No

Technologies: HTML/CSS (SASS, Tailwind), JavaScript (Vanilla, jQuery, React, Next.js, React Native), PHP (WordPress custom theme development with Twig and ACF, Gutenberg editor/Core), Python (Backend/AI/Web Scraping), Web Accessibility, Git, Figma

Resume/CV: https://drive.google.com/file/d/19lg7hblo1dd2ocftt7wdk8rft4p...

Email: Email is hidden

About me: Hi, I’m Giorgi — a Full-Stack Web Developer with around four years of experience in frontend development and about a year in backend and AI-related work. I’ve collaborated in various settings — from freelancing individually to working with teams in digital agency and startup — which helped me develop strong adaptability and teamwork skills. Most of my career has focused on building and maintaining WordPress websites (custom themes, ACF, Twig, Gutenberg), but over the past two years I’ve also been involved in React/Next.js projects. Recently, I’ve taken a growing interest in backend and AI development through my work at Onconest, an AI-powered health startup, where I contribute to both backend and AI implementation. I’m passionate about clean, accessible web experiences — over the last year, I’ve led accessibility improvements for large-scale projects in a US-based digital agency. I’m always eager to learn, improve, and take on new challenges where I can deliver results and make an impact.

Matcha.fm | Full-stack Software Engineer | $140K–$290K + Equity | REMOTE (US/Canada)

Hiring multiple Full-stack Software Engineers

We're building AI agent systems that automate complex multi-step workflows.

Ship production code fast, own projects end-to-end.

Looking for 5+ years experience (or <5 with hackathon wins/founder experience/strong GitHub).

Strong TypeScript/React/Node.js required. Stack: TypeScript, React, Node.js, GraphQL, PostgreSQL, AWS (ECS, RDS, Kafka, ES), Docker, Terraform. Full type safety, monorepo, 100% IaC, per-PR staging environments.

Remote US/Canada/EU if US timezone

Apply: https://matcha.fm/apply/se

Alloy Health: E-Commerce Platform Engineer - Brazil or Columbia (Remote)

Alloy Health is a leading digital health platform providing women with expert, personalized care for perimenopause and menopause. We connect women nationwide with menopause-trained physicians and trusted solutions that support their health, confidence, and well-being.

We’re hiring an E-commerce Platform Engineer to build and optimize the systems behind Alloy’s online customer experience. You’ll develop integrations, services, and platform capabilities that improve conversion, personalization, and growth across our e-commerce ecosystem.

Experience: -Strong proficiency in Node.js and TypeScript, with a proven record of building scalable integrations and services that drive revenue and commerce efficiency. -Deep, hands-on experience with e-commerce platforms (Shopify, commercetools, or similar) and understanding of key metrics (CAC, LTV, conversion rates, attribution models).

Link to apply: https://adr.to/lunywai or email me at joe dot epg at myalloy dot com