Blackbird | Dev Shop | Remote (US or Europe) | 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 Email is hidden

Archer Aviation | San Jose, CA | iOS & Backend | Full-Time | https://archer.com

Archer is an aerospace company building an all-electric vertical takeoff and landing aircraft with a mission to advance the benefits of sustainable air mobility.

We're pushing the envelope in aviation software through applied AI. We have production aircraft, we have an operational airport, and we have a dream of a better future in the sky.

We're looking for exceptional engineers who are not afraid of building new products and technologies and deploying them in safety critical environments. Join us if you want to build the next chapter in aviation.

Apply here and mention this post: https://job-boards.greenhouse.io/archer56?departments%5B%5D=...

Ezra | Senior+ Engineer (Full-Stack) | REMOTE (LATAM / US Eastern) | Full-time

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Ezra is a venture-backed startup building at the intersection of sustainable finance and artificial intelligence. We're building a platform to accelerate capital deployment into climate solutions and other world-positive investments.

I’m Rob, the CTO, and we’re looking for multiple seasoned, full-stack Senior+ Engineers (6-10+ years exp) to significantly contribute to the development and scaling of our core platform. We are specifically looking for teammates in Central and South America (LATAM) who can work US Eastern hours. This is a high-autonomy role for a proven generalist who is deeply product-focused and takes complete ownership of features from concept to production.

The Role:

Drive technical delivery of full-stack features end-to-end, collaborating with Product and Design to define requirements and ensure engineering quality.

Design and develop scalable components and APIs across our backend and frontend.

Work to integrate, serve, and iterate on model-powered features and RAG systems.

Contribute to system architecture decisions and the evolution of our infrastructure.

Stack: Python (FastAPI), Typescript, Next.js, React, AWS, Terraform, Postgres (SQLAlchemy).

Contact: Email me directly at Email is hidden with your resume

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Spill (https://www.spill.chat/) | Senior I Product Engineer (£84-101k) Senior II Backend Engineer (£108-121k) | London, UK (HQ) | ONSITE | Full-time

Our mission is to make talk therapy free at the point of use for as many people as possible. Right now, we're doing this by selling a mental health support product to businesses. We're a small product-focused company and were cashflow positive in 2025.

If you're interested in the mission and one of the roles, email Email is hidden with your CV

SpruceID (YC W21) | REMOTE (US-Based Preferred) | Full-Time | spruceid.com

Spruce lets users control their data across the web. Instead of users logging into platforms, we believe platforms should request to access data vaults controlled by users.

The demand for trusted digital ID is accelerating as AI deepfakes begin to destroy most of the ways we use to verify identity today. How private or secure is it to hold your driver's license or passport up to a webcam to get a bank account? Was it ever private or secure? Stable diffusion can break so much of this already. Society will need trusted digital IDs and credentials. Our mission is to allow them to be controlled by individuals, with safeguards to prevent descents into surveillance states and checkpoint societies.

We are the main implementers of category-defining initiatives such as the digital ID program for the California DMV, and the verifiable digital credentials program in Utah. We are private sector participants in NIST's National Cyber Security of Excellence initiative for privacy-preserving digital ID.

We are hiring skilled engineers who care about making a real impact in improving public services, digital autonomy, and user privacy for the world. We work closely with public sector agencies, and have high regard for public servants. We have a strong engineering and customer-oriented culture, and are not simply a SaaS product or AI wrapper. Our roles are not for the faint of heart: you will be expected to work hard and learn a lot in this role.

Our engineers are ambitious to get outcomes for our customers and their constituents. On any given day, they may write great Rust/C#/TypeScript, deal with mainframe dumps, read policy documents, respond to technical RFIs/RFPs, manage on-prem environments, implement new NFC + Bluetooth protocols in Swift/Kotlin, create CI/CD processes that enforce W3C accessibility guidelines and i18n requirements, rewrite lost specs from disassembled binaries, figure out stablecoin payments, and design new protections for public key infrastructure. It is a team effort, and people with T-shirt shaped skills are able to collaborate and learn a ton from each other every day.

We are interested in candidates who want to be proud of the meaningful impact they make for society, even if it takes time to get right. This is not the right job for someone who wants to "join a cool new AI startup" that implodes or exits in under a year.

See our roles here: https://jobs.lever.co/sprucesystems/

RepSpark | Engineering & Product | REMOTE (US) | Full-Time | https://www.repspark.com

RepSpark is the top SaaS B2B wholesale e-commerce platform for brands in apparel, footwear, and accessories. For example, we're how golf courses across North America and Europe purchase brands like Titleist, Peter Millar, Kjus, etc.

Stack: C#/.NET (Rider on macOS), GraphQL, React, TypeScript, PostgreSQL, AWS (CDK).

We're actively hiring:

* Senior Product Engineer (Full-Stack): Own outcomes across React/TS + C#/.NET + Postgres; help modernize legacy .NET Framework to .NET 8; build/scale ERP ETL & integrations. https://www.repspark.com/senior-product-engineer-full-stack

* Product Manager - Integrations: Own the integrations roadmap; prioritize ERP connectors (NetSuite, SAP, etc.); partner closely with engineering. https://www.repspark.com/product-manager

Email Email is hidden with your resume and optionally GitHub/portfolio.

CoPlane (https://coplane.com/) | Design Engineer | NYC or Remote (North America) | Full Time

The world doesn't need another ERP. CoPlane is building the Agentic Orchestration platform that enables enterprises to orchestrate intelligent processes across their existing systems. Founded by ex-Stripe/Segment product and tech leads, we're changing how businesses operate their backoffice - helping them scale intelligence not headcount.

We're looking for an exceptional design engineer to grow our small team of engineers that include ex-founders, open source contributors (authors of neovim and neverthrow), and architects of petabyte-scale data platforms. You'll work with billion-dollar enterprises solving their hardest, most mission-critical automation problems.

If you're excited about working at the nexus of data, automation and AI, and want to make a significant impact in an early, well-capitalized startup with large enterprise design partners, we'd love to hear from you.

Roles: Product/Design Engineer.

For more info and to apply: https://coplane.com/careers

Chroma | ONSITE - San Francisco | Full-time | https://trychroma.com

Chroma is the open-source search and retrieval database for AI applications. It supports dense vector, sparse vector, regex, and full-text search. We support local, single-node, and cloud hosting.

We're a team of 14, all engineers today. We work in Rust, Python, Typescript, and Go.

We're hiring for these areas:

- Product design

- Production engineering

- Platform engineering (Rust)

Apply here: https://jobs.ashbyhq.com/trychroma/9ed3aee8-07dd-44e3-9ca1-d...

More details at: https://careers.trychroma.com

Starbridge | Senior Engineers (Kotlin/Java/React/Typescript) | NYC or Remote | Full-time | starbridge.ai Starbridge is building an AI platform that turns large-scale public and enterprise data into reliable sales insights. We are early, moving fast, and building from zero to one, so this role will have huge ownership and product impact.

Product Engineer: (React/Typescript) who would work closely with product and design to build user-facing parts of the platform. You will craft performant, stable frontends that explain technical concepts to non-technical users and help us iterate fast based on customer feedback.

AI Engineer: Applied AI plus strong software engineering. You will build, evaluate, and deploy LLM-driven features like deep document analysis and interactive chat, working with models from OpenAI, Anthropic, and Gemini. Expect hands-on Python, ML system design, experimentation, and production reliability. Bonus for RAG depth and frameworks like LangChain, LlamaIndex, or Hugging Face.

Backend Engineer: (looking for Kotlin/Java/Scala experience). You'll work across the backend: building enterprise integrations, large-scale scraping and parsing pipelines, and systems that let users apply LLMs to millions of documents to generate insights at scale.

We're looking to build our in-person team in NYC but also open to remote!

Apply: https://starbridge.ai/careers and mention HackerNews or email Email is hidden with your resume.