Frequenz Energy-as-a-Service GmbH | Full-Time | Berlin/Hybrid-Possible, Germany

We are a technology company developing groundbreaking solutions that help companies to rapidly transition from being passive electricity consumers to becoming fully self-sustaining prosumers, capable of leveraging various renewable energy assets.

We are currently looking for Rust and Python software developers to join us in Berlin.

Our homepage: https://www.frequenz.com

Apply here for Rust: https://www.frequenz.com/jobs/senior-rust-engineer and here for Python: https://www.frequenz.com/careers/senior-python-developer

Feel free to attach links to your code examples from github, gitlab, or the like to your application.

These roles are not fully-remote. These are based in Berlin, with a possibility for hybrid-model, which can be discussed during the course of the interview.

(PS: If you choose to apply, we would appreciate if you could mention that you have come from HN :) )

LaunchDarkly is hiring Remote Senior Product Security Engineer: https://grnh.se/xonwo33o3us

OnFrontiers | Senior Engineer | Hybrid/Remote | NYC or Baltimore

OnFrontiers is hiring a strong senior engineer with experience programming agents to lead development of our agentic intelligence platform for government contractors.

We're looking for a passionate, curious engineer, who wants to work closely with our founding team and contribute as both a technical expert and a member of the product leadership.

In the role, you'll lead development of our indexing services, LLM integrations and APIs, as well as our SaaS platform, as we continue to scale. The role is hands-on but has the potential to grow into management as the team scales.

Core technologies include OpenSearch, Postgres & PGVector, Go, Python and React, all running on AWS.

https://www.onfrontiers.com/job-postings/lead-engineer

Interested, feel free to email me directly: lgsilver[at]onfrontiers.com

Sumble is the newco from the founders of Kaggle. We are hiring software engineers, data engineers, machine learning/ai engineers, growth 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 web 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.

Continua AI | https://continua.ai | Multiple Roles | ONSITE (NYC/Seattle) | Full-time | Salary + Equity

At Continua (http://continua.ai/), we're on our way to solving Social AI, and we're expanding our team! We've built an AI agent that users can invite into group conversations to make planning, coordination, and information retrieval effortless. We're social creatures and it just seemed to us a huge opportunity to bring AI into group settings. We've seen strong retention over the last few months and want you to help us bring our product to the next level. Try adding our agent at http://continua.ai/ to group chats and kick the tires!

I’m David (https://www.linkedin.com/in/dpetrou/), the founder and CEO. Before starting Continua, I was a Distinguished Software Engineer at Google. We’re backed by top-tier VCs and incredible angel investors. Our team is a fantastic bunch (http://continua.ai/team) of accomplished engineers and researchers from Google, Slack, Disney, and several AI startups. We're pretty clued in on the technology side and have a strong vision of how the transformative technology of the last few years along with our own secret sauce (not just a ChatGPT wrapper) can help a huge number of people.

We’re hiring a Senior/Staff Machine Learning Engineer, a full-stack engineer, a systems engineer, and a content creator: https://jobs.ashbyhq.com/continua/

For the ML role: you'll work on building and improving the best LLM group chat experience there is, including fine-tuning models to boost conversational quality and improve scalability and identifying novel ways to build a "memory" which leads to a personalized and unique experience for our users. You're an experienced machine learning engineer with broad knowledge and skills and have experience fine-tuning LLMs for both generative and discriminative use cases. You have a Master's or PhD in Machine Learning (or a Bachelor’s with exceptional industry experience). You understand what it means to work at a fast-moving startup.

Oh, and we maintain a vibrant blog, including items of technical interest, at http://blog.continua.ai/. Check it out! :)

David

Ours Privacy (https://oursprivacy.com) | Senior/Principal Software Engineer | Full-stack | Remote (US)

Ours Privacy is building a HIPAA-compliant Customer Data Platform (CDP) and Consent Management Platform (CMP) designed for healthcare organizations. We help hospitals and digital health companies use analytics, consent, and personalization tools without compromising on privacy.

Our stack: Our stack: React, Node.js/TypeScript, and AWS (Lambda, API Gateway, S3, Step Functions, CloudFront, WAF, DynamoDB, Athena/Iceberg).

What we’re looking for: • Startup mindset: bias toward shipping, ownership, and iterating quickly. • Engineers who enjoy working across the stack • Comfort with AWS (serverless preferred) and TypeScript/JavaScript.

Why join us: • Early stage, venture-funded startup — own complete features. • Remote-first (US-based team). • Small, senior team that values technical excellence, transparency, and work-life balance. • Flexible job title

Apply: https://oursprivacy.com/careers/software-engineer

pod network | Competitive salary + equity | Remote or on site in Athens, Greece | multiple roles | https://pod-network.notion.site/open-positions

We are an ambitious, early-stage Web3 startup building a revolutionary new layer-1 protocol designed to bring a Web2-like experience to Web3 systems. Our team is developing a chainless, blockless, and leaderless protocol that challenges the conventional notion of consensus. Read more about pod https://pod.network/

We are backed by a16z crypto, 1kx, and BBF.

If you're passionate about Web3 and want to help developers, businesses, and partners build on cutting-edge Web3 infrastructure, we'd love for you to join us.

We are looking for: Smart Contract Engineer (EVM/Low-Level Execution) | Business Development Lead | Content & Growth Strategist

Apply here: https://pod-network.notion.site/open-positions

Vibrant (https://www.vibrantpractice.com) | Founding Applied AI Engineer | Full-Time | SF Bay Area (hybrid)

We're building Cursor for doctors. At Vibrant, we've picked the expensive, high-touch, data-heavy subspecialties of functional, integrative, and longevity medicine, and we've created AI agents that reduce hours of clinical work to minutes.

We're a world-class team of health tech founders, AI builders, and physicians from Meta, Stride Health, and Parsley Health. In just five months, we've built notetaking/scribing, Clinical Decision Support, and some of the integrations a clinician needs to run their practice with Vibrant as their AI Operating System.

In words of doctors using our product already in production: "I have goosebumps, this is really incredible. Very accurate." "Seeing the patient overview AI-generated summary come to life after placing a couple notes is AMAZING. I'm losing it over here"

Our stack: Typescript, React, NextJS, React Native, Expo, AI SDK, and custom AI agents, RAG, tools, and agentic workflows.

It's still early days for us – we're looking for folks who ship fast and are curious and resourceful. If that's you, shoot me an email at pedro [at] vibrantpractice.com or just book an intro with me: https://book.vimcal.com/p/pedro/hn-15-minute-chat-with-pedro

Scholarly | Software Engineer | Seattle, On-Site | Full-Time | $130k - $200k + equity + health benefits + equipment budget

Scholarly is building the HR operating system for higher education. We've built a software platform that enables our customers to make data-driven decisions and to automate essential processes like performance reviews, tenure processes, leave workflows, and more. We are a venture-backed seed stage company of experienced, motivated, and collaborative folks. We are backed by leading investors in the industry and working with some of the best universities in the US.

We're looking for a full-stack candidate without about 5 years of experience building web applications. We write Ruby and Rails, but we are considering candidates with other stack experiences. Engineering is based in Seattle and on site in Pioneer Square. Looking to get back to a collaborative, in-office culture post-COVID? Let's chat.

If interested, please apply here: https://jobs.ashbyhq.com/Scholarly/1835336e-2b79-4531-82a0-f...

Squint | Onsite, San Francisco | Squint is a mobile app that uses AI and AR to automate data entry, generate custom procedures, and make every operator an expert.

Squint is the leading manufacturing intelligence platform. We unlock agentic manufacturing by giving frontline operators the knowledge they need, exactly when they need it.

We build consumer-grade software that delivers enterprise-grade impact — on the devices people already know and trust: phones and tablets. By combining cutting-edge tech with thoughtful customer insight we’re transforming how the physical world works.

High Priority Open Roles:

- Product Engineer, High Velocity

- Senior GTM Recruiter

- Strategic Enterprise Account Executive

- SDR Manager

View full list of roles and apply here: https://jobs.ashbyhq.com/squint.ai?utm_source=Hackernews

Stealth Vertical AI Startup (a16z Speedrun 006) | Founding AI Engineer | San Francisco | Onsite | $120K + Top Equity

We're building the first AI mover in a massive, real-world industry crucial to keeping the modern world running. $100K ARR in 3 months and pre-seed from a16z speedrun.

Team: Not our first rodeo. Michael Holkesvik (me!) was CTO of series B company that raised $65m. Sanjay Dasari (nice guy!) is a 2× founder and scaled his last startup to $250M revenue. We have the best advisory board in the industry, and know how to have fun while building something massive.

Role: Work directly with us, and own full stack features end-to-end. You should be excited for customer site visits where we get the privilege of sharing our tools with expert blue collar workers. Not "forward deployed", but we need to be belly-to-belly on occasion to learn what's working.

You: Sharp and scrappy, excited about overlooked industries. 2-3 years experience, ideally writing code at an early stage startup. You're excited about cutting edge voice AI (pipecat, vapi), AI agents (Browserbase, Vercel AI SDK), and multimodal reasoning.

Apply: mike [at] heaviai [dot] com with a short note + optional links to projects/code

Cleverbase | Lead Mobile Developer | Remote (Europe), The Hague, Netherlands) | Full-time | €78k - €96k | https://cleverbase.com/business/careers/lead-mobile-develope...

At Cleverbase, we’re building a safer digital society with our Wallet and Trust Services. We’re hiring a lead to create the most secure and user‑friendly digital identity wallet. You’ll turn business goals into wallet architecture for iOS and Android, stay hands‑on and guide the team shaping Europe’s most trusted identity solution.

Interested? Reach out: recruitment@cleverbase.com

Rocket Alumni Solutions | https://rocketalumnisolutions.com | Frontend Engineer | REMOTE (Crossover with EST timezone) | Full-time | $90k - $180k USD DOE.

Rocket Alumni Solutions builds interactive recognition displays for schools, universities, and organizations. In 2025, we’ll surpass 1,400 touchscreen installations — profitable and scaling rapidly.

https://forms.gle/QUvemqavKaZsmSE8A

Checkly | Multiple Roles | REMOTE | Full time | https://www.checklyhq.com/

Checkly helps engineers build reliable products by unifying testing, monitoring and observability. OpenTelemetry, Playwright, and Monitoring as Code are our foundation for unifying performance and reliability. In 2024, we raised $20M in Series B funding from Balderton, CRV, and Accel to take things to the next level.

-Senior Account Executive (Remote, USA)

-Senior Backend Engineer (Remote, UTC +3 to UTC -3)

-Staff Product Manager (Remote, UTC +3 to UTC -3)

-Senior Product Marketing Manager (Remote, UTC +2 to UTC -4)

-Senior Customer Solutions Engineer (Remote, Europe/UK)

See the full descriptions and apply here (and mention HN): https://jobs.ashbyhq.com/checkly?utm_source=hn

Cora AI | Founding Engineer | Remote (USA only; Bay Area / CA preferred) | Full-time | $150–200k + early equity

We’re building AI agents that help B2B companies scale customer relationships. We’re already live with several enterprise customers and receiving a lot of positive feedback: “I’m super excited!! You’re changing our lives!!” — Account Manager for emerging-enterprise (mid-market) accounts.

We are backed by Acrew Capital, Emerson Collective, Recall Capital, and angels from LinkedIn, BetterUp, Glean, and Scale AI. Strong pipeline beyond what’s already in production.

Tech: Python, FastAPI, React, Vite, Render (PaaS), Inngest (Orchestration)

Apply if you:

- Have real 0→1 startup experience

- Love digging into the details

- Break fuzzy problems into incremental, shippable chunks

- Ship fast and own outcomes end-to-end

- Can effectively steer and leverage AI IDEs

Why Cora:

- Work on cutting-edge applied AI: voice agents, knowledge graphs, multi-agent systems, simulations, and more

- Real users, real impact, high autonomy

- Fast, fair interview loop — no BS

Learn more: https://www.cora.ai/careers#Our-roles

Interested? Email careers [at] cora.ai — these go straight to me, and I read every one.

WireScreen (Series A) | Senior Software Engineer | NYC - hybrid | Full-time | $165k-$200k base + equity | https://jobs.ashbyhq.com/wirescreen/158fd72f-fc2f-47a3-bdb5-...

WireScreen is a fast-growing Sequoia-backed Series A startup building the go-to open source intelligence platform for navigating global supply chains and China-related risk. While China maintains some of the world’s most detailed corporate ownership records, the real challenge is connecting the dots. That’s where we come in—surfacing the networks, relationships, and financial ties behind companies to support national security, compliance, and regulatory oversight.

We’re hiring on the backend to help solve one of the hardest problems in data engineering: building a production knowledge graph from millions of fragmented, inconsistent Chinese corporate records where traditional approaches break down. Our PySpark/EMR/Airflow pipeline is just the foundation. The real challenges are in entity resolution across transliterated names and obfuscated ownership structures, bipartite matching algorithms and inferring relationships. We build our product on top of that with a Django/FastAPI/React stack to help our users access that knowledge graph to analyze and investigate any risks they should be aware of.

If you have prior startup experience, can bring strong Python (PySpark is a big plus) experience and have previously worked with TB-scale data sets - we’d love to talk to you.

Apply here: https://jobs.ashbyhq.com/wirescreen/158fd72f-fc2f-47a3-bdb5-...

Happy to answer any questions - you can reach out to me here or at leo.green@wirescreen.ai - I'm a recruiter with WireScreen, but if I don't know the answer I'll ping our engineering folks and come back to you fast.

Oso | Multiple Roles | New York, NY | ONSITE | Competitive Salary + Equity

Oso is a developer-first authorization system that makes access control simple and scalable. Backed by Sequoia and Felicis with $26M raised, we're trusted by thousands of companies from startups to the Fortune 500. Join us at the inflection point as we lead the creation of a $25B+ market.

We're hiring for:

- Engineering Manager

- Development Experience Engineer

Check out our openings here: https://www.osohq.com/company/jobs

Interested? Reach out to julia@osohq.com.

PlantingSpace | Full-time | Remote (EU time zone) + Quarterly Meet-ups | https://planting.space

We’re building an AI system for analysts and scientists, based on a fundamentally new approach to reasoning and knowledge representation. Our approach differs from LLMs in that we compose algorithms symbolically to represent complex knowledge, and perform probabilistic computations. This enables the AI-driven application of statistical models to different problems, while providing the user with a verifiable reasoning path, and an assessment of the uncertainty in each answer. We are developing applications for analysis and research in domains such as Finance, Strategy Consulting, Engineering, Material Sciences, and more.

This is a rare opportunity for senior engineers and product managers to join us at a pivotal moment and shape a deep-tech product from its earliest stage:

* Program Synthesis Engineer

* Product Software Engineer

* Bayesian Software Engineer

* Senior Product Manager

Find details and apply at: https://planting.space/joinus/

Questions? Get in touch: talent@planting.space

Strum AI | Founding/Lead Engineer | https://www.linkedin.com/company/strum-ai/

At Strum, we're reimagining technology that powers global supply chain using a fresh AI-first approach. Most supply chains are still stuck with Excel or enterprise tools that take months (and $MM) to adopt. Our mission is to lower that barrier — making it possible for any business, big or small, to access modern forecasting, inventory, and planning solutions in days, not months. We’re on our journey to democratizing supply chain technology. As our first engineer, you’ll be working with the founders (former Supply chain/tech directors at Amazon who have built key components of Amazon's supply chain) to develop the core product from the grounds up (involves application of LLMs, deep learning, and optimization). If you have mid to senior level experience in software development, have built SaaS applications, understand ML-Engineering, and love building 0->1 products, we would love to talk to you. Please reach out to us at: careers@strum-ai.com.

Location negotiable.

CoPlane (https://coplane.com/) | Infra (BYOC) Platform Eng and Product/Design Engineer | Remote (North America) or NYC | 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 exceptional engineers to grow our small founding 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: Platform Engineer (Infra), and Product/Design Engineer.

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