Missive | Senior Backend Developer | REMOTE | Full-time

Missive brings inbox collaboration to teams that run on email.

This isn’t your typical SaaS; it’s a full-fledged app users live in all day. We integrate with dozens of APIs and servers, process 10M+ emails, 100M+ requests per day serving thousands of users who collaborate in real-time. If you’re excited by data at large scale, complex edge cases and third parties that always find new ways to fail, this is for you.

Missive started over a decade ago. It is mature, still 100% founder-owned and highly profitable. We’re in it for the long run; a small, dedicated team building a product customers genuinely love.

We keep our stack simple and that doesn’t mean boring. The backend is a Rails monolith, Postgres, plus a few tiny services in Ruby, Node or Bun.

Read more and apply here: https://jobs.rubyonrails.org/jobs/27037-senior-backend-devel...

Olli Health | REMOTE (US/CA) w/ Quarterly Travel | Full-Time | ollihealth.ai

Hi HN -

Several of our critical founding hires came through this forum, and we’re hiring again for 4 additional roles.

Olli Health

Built by home health experts and seasoned product managers and engineers from Amazon, Google, Cohere Health, and Arrive Health, Olli Health streamlines ICD-10 coding and in-home documentation with industry-leading speed and accuracy, freeing nurses to focus on patients while helping agencies maximize revenue, reduce compliance risk, and scale efficiently.

We’re backed by top healthtech and AI-focused VCs (Cannage Capital, Arkitekt Ventures, and Tau Ventures) and Olli Health was recently profiled in Home Health Care News (https://homehealthcarenews.com/2025/11/home-health-ai-platfo..., Post-Acute Care's leading publication).

We are motivated by the opportunity for impact, and driven to ensure that our parents, friends, (and ourselves!) will continue to have access to quality healthcare in the home.

Roles

Senior AI Engineer | $180k-220k: Own end-to-end LLM product surfaces in a clinical/HIPAA environment, running rigorous evals and experiments across prompts, retrieval, and agents while shipping fast with strong Python chops and NLP fundamentals.

Senior Software Engineer, Scribe & Integrations | $160k-190k: Ship production React Native apps with strong TypeScript/PostgreSQL chops to own the full stack end-to-end, wrangling messy EHR data integrations and turning fuzzy clinical workflows into fast-shipped, observable features.

Senior Software Engineer, Platform | $160k-190k: Stack - Python (FastAPI/Django/Flask), React, PostgreSQL, and AWS to own platform architecture and IC delivery on a small team while mentoring engineers and setting the quality bar across a fast-moving healthcare codebase.

Senior Product Manager | $140k-180k: Experience in regulated/clinical B2B SaaS, to own roadmap and prioritization across two product lines, run hands-on customer discovery with clinicians, and ship tight specs fast at an early-stage startup.

Requirements for all roles: 5+ YoE | Startup experience | Auth to work in US

I'm Olli's CTO, and these roles will work directly with me and our VP Engineering.

See our website for details on each: https://www.ollihomehealth.ai/careers

ParadeDB (YC S23, https://paradedb.com) | Database Internals Engineers | Remote or hybrid in San Francisco | Full-time

ParadeDB is a Postgres extension that delivers state-of-the-art search in Postgres. Our customers, including Alibaba Cloud, BILT Rewards, Modern Treasury (YC S18) and many others, rely on us to deliver them the performance and feature set of dedicated vector databases/Elasticsearch natively in Postgres, to simplify their stack and day-to-day operations.

If you like systems, this might be for you. We're a team of 11, Series A company based in SF but distributed across North America.

We're open source at: https://github.com/paradedb/paradedb. Our technical blog: https://www.paradedb.com/blog More info on roles: https://paradedb.notion.site/

Eve | On-site (San Francisco, CA) | Full Time | https://www.helloeve.co/

Company: We are building an executive voice engine (Eve). This is a multi-agent AI system that learns how a leader thinks and produces content indistinguishable from what they'd write. Think: a specialized vertical AI solution that uses coordinated specialized agents, persistent context graphs, a learning flywheel that compounds with every piece. We have paying customers and a growing agency channel, mostly word of mouth.

Role: Full AI stack + product. Agent orchestration, evals, RAG, prompt chaining, model trade-offs, and customer-facing features. TypeScript, SvelteKit, Cloudflare Workers, Postgres.

You: Full-stack in the real sense (AI systems + infra + product). At least five years experience shipping code into production systems including production AI. Move fast, care deeply, and be curious.

Culture: We are a team of four The founder is technical and moving to spend more time in growing the the business . Architecture is early enough that your decisions define the system.

Apply: Send an email to hello [at] helloeve.co. Use the subject line: My voice is {fill in your description}. In the body, include your favorite piece of content you've published and why it matters to have your voice out there. Please also share links to your portfolio and anything that shows how you think about AI systems, e.g. an eval harness, a multi-agent project, a write-up, a side project, and most importantly, why you + why you want to be part of the team.

BillionToOne (YC S17, NASDAQ: BLLN) | Menlo Park, CA | Onsite

We're a molecular diagnostics company. YC made a video of us recently: https://www.youtube.com/watch?v=kkv5rZhrLkc.

Our software team creates products that help detect prenatal genetic conditions non-invasively and uncover 50%+ more cancer treatment options. Your code reaches patients and the providers making decisions for them.

Stack: Python, React, TypeScript, AWS, Postgres. We believe in small teams with high ownership.

We're hiring:

- Senior Software Engineer (Prenatal, Oncology, Digital Experiences)

- Senior AI Engineer

- AI Engineering Intern

- Lead UX Designer / Designer

See our engineering specific recruiting page at https://engineering.billiontoone.com/#roles. You can reach out to me directly with a resume at kwu@billiontoone.com.

Blackbird | Dev Shop | Remote (US) | Contract

Blackbird builds web + mobile apps for startups and innovative companies. We work on interesting, greenfield projects, and rely on small, veteran teams who have lots of autonomy. Everyone is a remote contractor, and our work culture is low-drama and highly collaborative. No pointless meetings, no bureaucracy, no egos and lots of time spent building things.

We’re looking for senior full stack engineers / CTO consultants / data scientists. We value engineers who are strong technically as well as great communicators. We work with lots of freelancers who appreciate the steady, interesting work.

Our typical stack is TypeScript, React, Postgres, and AWS although it will vary project to project.

If you enjoy moving fast, working with great engineers, and building something from the ground up, you’ll fit right in.

If interested, reach out directly to me at vance [at] blackbird.us. If you have an hourly rate please include that + any other freelancer / agency work you’ve done.

Website: https://blackbird.us/

Cardog | Toronto, ON | Remote (Canada) | Full-time

AI-powered automotive platform — we're building the infrastructure layer for vehicle data, from VIN decoding to market intelligence.

Looking for: iOS/Mobile, Full-Stack, AI/ML, Data Engineers

Stack: React Native/Expo, Next.js, Hono, Cloudflare Workers, PostgreSQL, TypeScript everywhere

https://cardog.app/careers

Instinct Science | Senior Full-Stack Engineer (Elixir + React) | REMOTE (US) | Full-Time

Instinct Science is the AI leader in veterinary medicine. We build the platform that powers animal hospitals — a cloud-native EMR with real-time clinical decision support, applied AI, and the tools that help veterinary teams practice at their best. Thousands of users in clinics across the globe rely on what we ship every day.

We're at an inflection point: proven product-market fit, scaling fast, and greenfield work ahead that will serve tens of thousands of users. Engineers here own problems end-to-end — from talking to veterinarians about their biggest frustrations, to shipping production code, to iterating based on real feedback.

STACK: Elixir, React, TypeScript, PostgreSQL, AWS

https://instinctscience.applytojob.com/apply/1H156iuuzg/Seni... (Applying from HN? Mention it in your application.)

Youth Inc | Software Engineer | ONSITE/HYBRID Boston

Youth Inc. is a venture-backed commerce and media company focused on the youth and high school sports market.

We’re looking for an early-career Software Engineer who wants to grow fast by growing a real, production system with real customers.

We’ve already gone from zero to one and are growing rapidly with customers and revenue. You’ll be building on an existing platform, improving performance, building new capabilities and integrating with partners.

Core Tech Stack - Elixir - Postgres - AWS

Elixir experience is ideal, but we know great people will pick it up quickly.

Please email jbutler@youth.inc

Gladly | Remote (US) | Staff Software Engineer, AI & Automation | $60k–$215k + Equity | https://www.gladly.ai/careers

Gladly is at the forefront of building retail customer service AI. Our AI is live in production with customer-centric brands like Crate & Barrel, Sephora, and REI. We have the ingredients that make AI work: rich data, close customer partnerships, and a strong engineering culture.

We're hiring Senior & Staff Software Engineers to lead major AI & Automation initiatives. This is a high-impact, hands-on role for someone who wants to ship fast, collaborate deeply, and build systems that help real people.

You should have:

- 5-10+ years of full-stack experience (Go, TypeScript, React, Postgres a plus)

- Experience with generative AI, multi-agent systems, RAG pipelines (can be personal projects / side projects)

- A bias toward impact and product thinking

- Excellent collaboration and communication skills

Bonus: Entrepreneurial or other leadership experience. We're a remote-first company with competitive pay, meaningful equity, and a focus on doing real work with great people. Learn more + apply: https://www.gladly.ai/careers Or reach out directly: gerad@gladly.a

Kredit | .NET Engineer Roles | Remote (US) | Full-time

Kredit (https://www.kredit.fyi) is on a mission to resolve consumer debt. We help people get out of financial hardship and offer tools for companies looking to manage their internal processes. Kredit is a small team and growing.

Our stack: .NET Core, C#, PostgreSQL, CQRS, Angular, GCP, Kubernetes, Terraform and much more. We are looking full-stack engineers that have a .NET background, eager to learn and motivated to work in a startup.

If this sounds interesting to you, please reach out to recruiting at trykredit.com

Chestnut | Senior Product Engineer | SF or Seattle (Hybrid) | https://jobs.ashbyhq.com/Chestnut

I'm Nick, CTO & co-founder. We're Rippling, but for insurance carriers paying their sales force. Every policy sold triggers a chain of payouts across brokers, agents, and sub-agents. Today that runs on spreadsheets and legacy vendor systems and tomorrow they'll run on Chestnut. Nationwide and other major carriers have already made the switch.

Revenue is up 8x in the last year. We're backed by a16z. Founding team came out of leadership at Ethos (insuretech that recently IPO'd in January).

The work is state-heavy and correctness-critical: payouts that must reconcile with finance to the cent, dynamic agent hierarchies, retries, chargebacks, partial failures. These systems move real money and cannot drift.

You'll design schemas, build backend logic, ship UI, deploy, and own the sharp edges that show up with real enterprise customers.

Stack: Go, TypeScript/React, Postgres, Temporal, Kubernetes, AWS. We use AI aggressively and expect you to as well.

We're looking for 3–6 years on real product systems. You're thoughtful about invariants and failure modes.

Apply: https://jobs.ashbyhq.com/Chestnut

Email me: nick at chestnutfi.com

Lineation | Rust/TypeScript/React/GraphQL/PostgreSQL | Senior Software Engineer | Contractor Part-Time | Remote (US-friendly time zones) | https://lineation.ai

We’re building an Agentic AI Security Platform that helps teams secure autonomous AI workflows. We’re looking for a senior engineer to help design and ship core systems across policy enforcement, runtime monitoring, incident workflows, and auditability.

You’ll work across backend and product surfaces: Rust + gRPC services, GraphQL APIs, and TypeScript/React interfaces for security operations. You should be comfortable owning features end-to-end, making pragmatic architecture decisions, and collaborating closely with product/security teams in a small, fast-moving environment.

Strong fit if you have experience with distributed systems, secure-by-default engineering, and production observability. Security product background is a plus, but not required if you’re excited to learn quickly and build in this space.

If this sounds interesting, email us at [hello@lineation.ai] with Resume/CV plus links to your GitHub/LinkedIn and a short note on systems you’ve built.

Vornoy | Remote (US) | Full-time | Software Engineer | $90k-$110k

We aggregate marketing and financial data into dashboards. Heavy backend focus on ETL, data pipeline, modeling, and normalization. Front end is straight forward React.

Looking for skills in Python, React, FastAPI, Postgres, ClickHouse, Spark, Kafka, AWS, MCP, RAG, OLAP. Familiarity with finance domain a big plus.

If you like the idea of wrangling complex data sets send me an email: john at vornoy.

Opendate | Senior Full Stack Engineer (Ruby on Rails) | REMOTE (US only) | Full-time | https://www.opendate.io/careers/senior-full-stack-software-e...

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...

Marker | Full-time | REMOTE or HYBRID (NYC/SF/London) | https://markercollective.com

Marker is a technology joint venture from 3 leading communications agencies. We’re an incubator building and launching force-multiplying software products for communications teams.

Our first product is Delve (https://delve.news) — a coverage monitoring, analysis, and insight toolkit to track and measure the entire online conversation about your business or industry.

Our product team is small and autonomous, but with the resources, expertise, and customer access of the global agencies we work with. We’re hiring an early engineer to join us on this journey; you’ll have a large impact on what we build, how we build it, and where we’re going next.

Our technology stack includes Deno, React, PostgreSQL, and Elasticsearch. Bonus points for expertise in any of: data visualization, distributed systems, web scraping, large-scale data pipelines.

Apply: https://careers.markercollective.com/jobs/479834-software-en...

No recruiters or agencies, please.

Cloudpepper | Senior Platform / DevOps Engineer | Remote (CET overlap) or Brussels | Full-time | $150k–$180k | https://cloudpepper.io/careers/platform-engineer/

We run the platform behind 10,000+ Odoo instances and we're looking for a Senior Platform / DevOps Engineer to join us.

Stack: Symfony/PHP, Ansible, Linux, PostgreSQL, Nginx, Python.

This is a senior role that spans both sides of the platform: backend work in Symfony/PHP, and ownership of the Linux + Ansible automation underneath. You'll be the person making sure the whole thing keeps humming as we scale.

We're a small team with high ownership and very little bureaucracy — if you like shipping over slide decks, you'll fit in.

Remote is fine as long as you can overlap with CET, or you're welcome to join us in Brussels.

Full role and application: https://cloudpepper.io/careers/platform-engineer/

Vivodyne | Senior Full Stack Software Engineer | Full time | Onsite (5 days) SF

Our robots grow thousands of human tissues and test them at scale, so we can predict which medicines will work safely before they reach patients. You will build polished, high-performance web applications using React with FastAPI on the backend and Postgres as a database.

https://job-boards.greenhouse.io/vivodyne/jobs/5120631007

Lantern | Software Engineers (Python, Full-Stack) | NYC (Onsite) | Full-time | withlantern.com Lantern is building AI-powered revenue intelligence—autonomous agents that turn cold outreach into warm conversations. We detect buying signals across your tech stack, prioritize opportunities, and help B2B sales teams focus on deals that actually close. We're early, agentic-first, and moving fast. Senior Software Engineer: You'll own complex technical problems end-to-end—translating customer needs into scalable architecture, optimizing AI model efficiency through prompt engineering, and shipping features that directly impact how revenue teams operate. We want bold ideas and people who push boundaries.

Junior Software Engineer: You'll work across our stack (Python, FastAPI, Next.js, React) alongside senior engineers, contributing to real features from day one. Great fit if you're hungry to learn, ship fast, and grow with a startup building cutting-edge agentic systems.

New Grad Software Engineer: Entry point for recent grads excited about AI and agentic systems. You'll get hands-on experience with our modern data stack (Postgres, ElasticSearch, ClickHouse, DuckDB), Kubernetes/AWS deployment, and Temporal.io workflow orchestration while shipping production code.

This role is based in our Manhattan office (4 days/week in-person). Full health and dental coverage.

Apply: https://forms.gle/kEi5MDDiaJKdyN3fA or email maksym at withlantern.com with your resume.

Join (https://join.build) | Staff Software Engineer | Remote | $175K–$205K + equity Join builds collaboration software for the construction industry — helping contractors, owners, and architects coordinate on high-value projects. React, Golang, Postgres. We deploy to AWS via Terraform.

We're hiring multiple staff engineers across a range of profiles: frontend-heavy, fullstack, and backend-heavy. We're especially looking for 1–2 engineers with architect-level frontend chops (React, TypeScript, state management, perf) who can own UI quality and level up the team. But we're also very interested in strong Go/Postgres or infra/ops backgrounds.

Day to day you'll write code (25–75%), review PRs (25–50%), and pair/mentor/document (10–20%). You'll act as a technical lead on projects, break down large efforts, and influence architectural decisions across the org. Small cross-functional teams with a designer, PM, and EM.

Stack: React, TypeScript, Golang, Postgres, GraphQL/Apollo, Vite, Cypress, Terraform, AWS (ECS, RDS, Lambda). We lightly use Elastic and are interested in event-driven patterns.

Fully remote, 100% employer-paid medical, 401(k), two company-wide shutdown weeks, continuing education budget.

To apply: send resume to jon@join.build. If you are able to please include a PR review you've given that had a positive impact (or a description/snippet if that's confidential).