ShieldAI | Web & Infrastructure Engineer | Full-time | Remote (US) or San Diego, CA with occasional travel

ShieldAI's Hivemind Special Project is hiring a Staff to Principal-level Infrastructure & Web Applications Engineer. We're a small team entirely comprised of L5-L8 ICs, working to bring seamless robotic behavior and coordination development from a sci-fi concept into reality. Our team work on a collection of long-term initiatives, demos, spike/proof of concepts, and assists to support Hivemind Product and Hivemind Solutions. LLM/AI applications for development acceleration represent a significant portion of our focus.

For this role, we are looking for someone deeply versed into Web Application and Infrastructure development. In particular TypeScript, bundlers, isomorphic development strategies, Web semantics, CSS/modules, browser performance optimization, protocols etc. If you have built custom webpack loaders, an SSR framework of FRP renderer from scratch, done packet level processing, or frame-rate optimizations in React, and have strong opinions about functional development and infrastructure please reach out!

Full Job posting: https://jobs.lever.co/shieldai/55c5676a-8b67-4379-84a8-58f59... If you are interested please contact me at [sp_hiring_sep2025 AT shield.ai] or apply directly on the job posting.

Composio | Senior Backend Engineers + Product Engineers (Frontend + SDKs) | Full-Time | In Office (SF and Bengaluru, India)

Hi HN, we’re building https://composio.dev — the fastest way for AI agents and developers to take action across apps like GitHub, Gmail, Slack, and more. Our SDKs (TypeScript + Python) and APIs let developers connect and execute tools in just a few lines of code.

We’re a small, fast-moving team obsessed with developer experience. Our stack is TypeScript-heavy: backend in TS/Go/Python, frontend in React/Next.js, SDKs in TS/Python. You’ll work across product and engineering to define APIs, craft abstractions, and ship features used by thousands of developers.

We’re early stage, small team and looking for engineers who want ownership and impact.

Feel free to reach out to me with your resume and links of your work: musthaq@composio.dev

Kredit | .NET Engineer Roles | Remote (US) | Full-time Kredit (trykredit.com) is on a mission to resolve debt better. We provide tools to regular people to help them get the out of financial hardship, as well as provide tools for businesses to manage their processes. We are small (6 person dev team) and growing. Our stack: .NET Core, C#, PostgreSQL, Mediatr, CQRS, Events, Angular, GCP, Kubernetes, Terraform and much more.

We are a Event/CQRS stack and are looking for Engineers that fit that experience in this area.

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

Ploid AI | Barcelona, Spain | HYBRID (preferably on-site) | Founding Engineers | Full-time + Equity

We’re building an AI-first bioinformatics platform to empower plant breeders and life science researchers with agentic AI and LLMs. Backed by pre-seed funding and real demand from biotech and seed companies, we’re looking for versatile founding engineers to help us shape the future of AI in genomics.

What you’ll do:

• Architect and build AI workflows, agentic interfaces, and data pipelines

• Work across the stack: Go, Python, TypeScript

• Contribute to system design, infrastructure (AWS, Docker, Terraform), and devops

• Collaborate closely with scientists and iterate from prototype to product

• Help define our technical culture and roadmap as a core founding member

Nice-to-haves (not all required): LLM integration, RAG systems, gRPC, scientific computing, cloud/on-prem hybrid systems

About us: We’re an early team of engineers and scientists with strong academic and industry backgrounds (ex-BCG, PhD in Plant Biotech, M.Sc. AI). We’re committed to building something impactful, technical, and genuinely useful for life science.

Apply: hello@ploid.ai

More about us: https://ploid.ai

We also consider internship requests from strong student candidates.

Update from last post on August: Thank a lot for all the interest from HN! we covered 2 out of the 3 open positions. We now look for expertise in full-stack development.

OneCrew | Multiple Roles | ONSITE / HYBRID | San Francisco, CA

OneCrew is the leading unified platform helping paving contractors estimate accurately, manage crews effectively, and track profitability in real-time. We eliminate the costly mistakes and wasted time that come from juggling multiple disconnected systems—giving contractors a single source of truth to run their entire operation.

We recently closed our Series A and are looking for highly motivated individuals to own their domain and accelerate our growth.

  - Engineering Manager
  - 3x Software Engineers (Fullstack, Frontend, Backend)
  - Product Manager
  - Growth

Find job details here: https://jobs.ashbyhq.com/onecrew and apply via email: hn [at] getonecrew [dot] com

Base Power | Onsite | Austin | Full-time | https://www.basepowercompany.com/careers At Base we're rebuilding the nation's power grid. We build and manufacture power systems, deploy them across the grid, and build the algs, ingestion and commanding platforms that operate the fleet in response to real-time grid conditions. Our team is made up of engineers from top infrastructure and energy companies (Apple, Anduril, Starlink, etc) and we have several years of runway from top firms (a16z, Valor, Thrive, Addition). We are looking for: - platform engineers - firmware & controls engineers - embedded software engineers

Sampling of exciting upcoming problems include: - Home load prediction algorithms - Resilient factory execution software platform - Automated hardware-in-the-loop (HIL) test system

Sumble is the newco from the founders of Kaggle. We are hiring software engineers, data engineers, machine learning/ai engineers, a product manager and a designer. Can view our roles and apply here: https://apply.workable.com/sumble-inc/

As background, we are building a knowledge graph from web data with a first focus on data for go-to-market teams. We use sources like job posts and resume data to identify things like org structure, tech stack, and key projects (e.g., GenAI initiatives, cloud migrations). Our product already has strong product-market fit, early revenue, and happy customers — and now we’re ready to accelerate.

Our long-term vision is to become the primary destination for accessing high-quality web data. Try the product at sumble.com.

We are a team of 15, including 10 engineers with experience at companies such as Google, Meta, Stack Overflow, and Kaggle.

Epic Kids | Data Engineer | US Resident | REMOTE | Full-Time | 130k

    tl;dr: Python + GCP + BigQuery + k8s.

    * Develop robust ETL/ELT pipelines to extract, transform, and load data from diverse sources into our data warehouse.
    * Enhance and maintain our cloud-based data storage and processing systems for performance, reliability, and cost-efficiency.
    * Implement rigorous data quality checks, monitoring, and security measures across all data assets.
    * 5+ years of experience in data engineering, with a strong grasp of data warehousing, ETL/ELT principles, and data modeling.
    * Experience with BigQuery (, Redshift, Snowflake, etc)
    * Experience with infrastructure tools (e.g. Terraform, Kubernetes, Docker) is a plus.


    https://job-boards.greenhouse.io/epickids/jobs/6669024003

Retirable | https://retirable.com | Senior Engineer | NYC, hybrid onsite (Flatiron)

Looking for a product-driven engineer with Rails/React experience to help us bring retirement planning to everyday Americans. We just raised a series A and are building our team for the next phase of growth. Our stack is React/Typescript/GraphQL and Rails built with event sourcing, DDD and CQRS.

https://wellfound.com/jobs/3322815-senior-software-engineer-...

FunnelStory | Principal Architect (Go) | REMOTE (India) | Bengaluru | Full-Time | 55-85 LPA | https://funnelstory.ai

I'm Preetam, co-founder and chief architect of FunnelStory. We're looking for a back-end engineer with a strong Go background to join our team.

FunnelStory is an AI-first customer superintelligence platform. We're a small (<20 people), fast-growing, VC-backed, early-stage startup, and we're gaining exciting traction with enterprise customers. We're looking for an architect/engineer for a team that's building next-generation AI platforms using Go.

This is a great fit if you have:

* Deep expertise in Go.

* A strong architectural background, with experience designing and scaling complex systems.

* Expertise with relational databases (PostgreSQL) and SQL

* Excitement about taking a high-impact, independent role in an early-stage environment, helping to mentor and uplift the team.

Who we're looking for:

* 8+ years experience in Go, SQL, AWS

* Bias to action, ability to execute independently

* Strong architectural and problem-solving skills

* Ability to communicate complex ideas simply

More details + apply: https://wellfound.com/l/2Bn5eQ

Interested? Email me at preetam @ funnelstory.ai with "HN" in the subject.

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: simon+hn@zoetro.pe

SerpApi | https://serpapi.com | Junior to Senior Fullstack Engineer multiple positions | Customer Success Engineer | Hiring Coordinator | Python/Ruby/PHP/Js/Rust/Cotlin/C#/Crystal/Nim/Elixir Developer Advocate positions | Based in Austin, TX but remote-first structure | Full-time | ONSITE or FULLY REMOTE | $150K - 180K a year 1099 for US or local avg + 20% for outside the US

SerpApi is the leading API to scrape and parse search engine results. We deeply support Google, Google Maps, Google Images, Bing, Baidu, and a lot more.

Our current stack is Ruby, Rails, MongoDB, and React.JS. We are looking for more Junior and Senior FullStack Engineers. We have an awesome work environment: We are a remote first company (before Covid!). We do continuous integration, continuous deployments, code reviews, code pairings, profit sharing, and most of communication is async via GitHub.

We value super strongly transparency, do open books, have a public roadmap, and contribute to the EFF.

Apply at: https://serpapi.com/careers

Zetier | Multiple US locations (VA, PA, FL, TX, CA, NY) | ONSITE | Full-Time

Zetier develops real-world tools and capabilities to secure our nation in the short- and long-term. If you’re excited to delve deep into low-level systems, exploit dev, and more alongside a group of passionate hackers, then we’d love to hear from you.

Open-sourcing our work as much as possible is integral to Zetier and what we stand for. As folks who learned to hack on platforms like Linux, we aim to give back to the OSS community. Not only do we encourage our engineers to contribute, but we go a step further, adding monetary incentives to do so.

We’re looking to find the right people for a range of roles, including:

+ Vulnerability Researcher

+ Android Security Engineer

+ CNO Embedded Engineer

+ CNO Software Engineer

+ IT Security Engineer

+ Senior Technical Lead

+ Business Developer

All open positions: https://zetier.breezy.hr/

Our approach and benefits: https://zetier.com/careers/

Different skill set? Drop us a line at hello@zetier.com

PetsApp – The future of pet care | Minneapolis | Remote (US/EU)

Open roles:

  - Full Stack Engineer $150k–$230k | Full-time

We’re building an AI-powered clinic assistant that actually gets things done—booking appointments, managing vaccine records, handling FAQs, and even sounding like the clinic itself. This is multi-modal AI in the real world, not a demo.

⸻

We’re looking for product-minded engineers who want to push the boundaries of generative AI, RAG, and intelligent automation. You’ll ship fast, solve real user problems, and help us make AI feel magical, not clunky.

Tech stack: TypeScript, NestJS, React, React Native, AWS. Bonus: AI experience, but what matters most is product intuition and the drive to build useful things.

Apply here: https://forms.gle/5fww8HDwRrP6c6Fo9

April | https://www.tryapril.com | San Francisco /Gurgaon, India | ONSITE | Full-time

  Roles:
  1. Head of Growth (SF)
  2. Senior Software Engineer (Gurgaon, India)

We're building voice-first AI executive assistants for email and calendar management—think having a real assistant who actually gets things done. Backed by Y Combinator and other investors, we're at an extremely early stage and moving fast to hire our growth lead and early engineering team.

Head of Growth - Own the 0→100K user journey. Build content-led growth across LinkedIn/X/TikTok, run viral B2C experiments, and craft our brand voice. We need a proven track record of growing consumer products, content creation chops, and unreasonable excitement about retention curves. Extremely competitive salary + equity + user milestone bonuses.

Senior Software Engineer - Build the core backend for our AI assistant. 2-6 years of experience, TypeScript/Python, with consumer product background preferred. Work directly with founders on architecture decisions. Must work from the office. Competitive salary + early equity + quarterly performance hikes.

If you're interested, send your profile to akash@tryapril.com

SerpApi | https://serpapi.com | Junior to Senior Fullstack Engineer multiple positions | Customer Success Engineer | Hiring Coordinator | Python/Ruby/PHP/Js/Rust/Cotlin/C#/Crystal/Nim/Elixir Developer Advocate positions | Based in Austin, TX but remote-first structure | Full-time | ONSITE or FULLY REMOTE | $150K - 180K a year 1099 for US or local avg + 20% for outside the US SerpApi is the leading API to scrape and parse search engine results. We deeply support Google, Google Maps, Google Images, Bing, Baidu, and a lot more.

Our current stack is Ruby, Rails, MongoDB, and React.JS. We are looking for more Junior and Senior FullStack Engineers.

We have an awesome work environment: We are a remote first company (before Covid!). We do continuous integration, continuous deployments, code reviews, code pairings, profit sharing, and most of communication is async via GitHub.

We value super strongly transparency, do open books, have a public roadmap, and contribute to the EFF.

Apply at: https://serpapi.com/careers

You can contact me at david at serpapi.com if it's been a few days and you think your application may have fallen through the cracks.

Duranta | https://www.getduranta.com/ | Seattle, WA | ONSITE | Full-time

Roles: Computer Vision Engineer

We are building software to help lawn care professionals & landscapers design, sell and maintain beautiful spaces. Millions of acres a year are converted into urban dwelling spaces, and we want to help make them as beautiful and as ecologically friendly as possible.

Duranta was founded a little more than a year ago. We are well funded and are expanding our team. Join us, as our second CV/ML engineer and help lead Duranta's computer vision efforts. You'll work on foundational models for aerial imagery understanding, using one of the largest aerial datasets ever assembled, and: Collaborate with the founders and a world-class CV/ML advisor to push the limits of aerial image understanding Architect scalable training & inference pipelines Build and refine models for fine-grained semantic and instance segmentation Drive experimentation and infrastructure for rapid iteration Help define our CV roadmap—from model architecture to dataset strategy to active learning

Stack: Python, PyTorch, Mask2Former, SwinV2, AWS, W&B

If you're interested in working with us, please apply online. Mention you're from HN and let us know why Duranta is of interest and what you've been working on lately.

Please apply on: https://jobs.lever.co/getduranta

Saris AI | Full-Stack + ML Engineers | Full-Time | Onsite / Remote | Montreal, Canada

Hi HN, we are an YC alum founding team rethinking back-office workflows for banks and credit unions. We're tackling a $100 billion problem with the kind of automation problems that require long-context reasoning, tool orchestration across many critical systems, and strict compliance loops: the ones without known answers.

We've shipped real agents that handle real customer workflows in production. With a growing customer base and live deployments, we're scaling up fast and looking for deeply technical builders who want to have outsized impact early.

See more about the role & apply here: https://www.linkedin.com/jobs/view/4281413302

Come build the data platform of tomorrow!

Company: Galaxy - The Cursor for SQL | NYC (IRL) | Full-time | Roles: Founding AI Engineer, Founding Front-end Engineer | Founding Full-Stack Developer

https://www.getgalaxy.io

We’re building Galaxy, a next-generation SQL workspace that serves as the foundation for the data platform of tomorrow. Today it’s a lightning-fast, elegant query client — soon expanding into orchestration, reporting, and proactive intelligence so every team (not just engineering) can trust and act on data. We’re hiring early engineers in NYC to help shape this future.

Email us at hello@getgalaxy.io or hit us on Linkedin:

https://www.linkedin.com/in/garrettawolfe https://www.linkedin.com/in/mitchbregs https://www.linkedin.com/in/leonkozlowski

Charge Robotics | Mechanical Engineer | Full-time | Onsite / Hybrid | SF Bay Area

Hi HN! We’re a YC-backed, Series-A startup building robots that build large-scale solar farms.

Check out a video of our first system here! https://youtu.be/ZZ2fP1Y5Z2E

It turns out that construction companies literally can't build solar fast enough, so what we're doing is a crucial part of switching the grid over to renewable generation.

You’ll be a key contributor, helping bring our next generation of mobile solar factory to life.

Come work with us if you love:

* Fast-paced prototype development with software and hardware components

* Making a positive climate impact through your work

* Hacking on massive construction equipment!

Mechanical Engineer: https://www.workatastartup.com/jobs/64008