Clerq | Staff Engineer | Onsite 3 days (New York City) | https://clerq.io

Clerq is a NYC based fintech startup building a next generation platform payments platform that delivers a seamless checkout experience for high-ticket transactions. By leveraging modern bank rails, the platform offers the conversion and UX benefits of cards with risk and money movement infrastructure purpose-built for large purchases. Clerq replaces outdated manual payment methods like cash, checks and wires and expensive card surcharges with a smooth, integrated solution that helps merchants convert more customers without sacrificing margins.

We have started with the $1T+ U.S. auto vertical, where our platform is growing rapidly and already powering payments for several of the most recognized brands in the industry including multiple Fortune 500 companies. With proven traction, the company has expanded into high-growth adjacencies including high-ticket e-commerce, private travel and powersports.

We recently announced our series A so are looking for a Staff software engineer. Who is excited to scale out the future of bank payments. Currently we are primarily looking for backend engineers to focus on our core payments engine.

Stack: Python/Django, React, Nodejs, AWS Comp: $225k-260k + Equity

Email me at nick@clerq.io if you are interested in hearing more!

*Maiven | Full-Stack Engineer & Energy Modeling Engineer | Remote (US) | Full-Time*

Maiven is the software platform automating home decarbonization. We’re a small, mission-driven team punching way above our weight: we have large utility customers, contracts in multiple states, and a growing pipeline of programs launching later this year. We’re venture backed and moving fast.

We’re hiring two engineers:

- *Full-Stack Engineer* – NestJS, React, Tailwind, TypeScript, Python, Postgres, AWS, Lambdas. Someone who cares deeply about UX and moving fast while delighting the user.

- *Energy Modeling Engineer* – Python, pandas, AWS, modeling frameworks (ResStock, EnergyPlus, etc.). Experience with energy programs or building science is a huge plus.

Looking for builders who want real ownership, thrive in early-stage startups, and move with urgency and care. Competitive startup salary + meaningful equity.

More: https://www.askmaiven.com

To apply: email [hiring@askmaiven.com](mailto:hiring@askmaiven.com) with a resume, your links, and a few reasons why an early stage startup is the right choice for you right now.

Sumble is the newco from the founders of Kaggle. We are hiring a designer engineers (full stack, FE, data engineers, machine learning/ai). 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 17, including 12 engineers with experience at companies such as Google, Meta, Stack Overflow, and Kaggle.We just announced a $38.5MM financing: https://techcrunch.com/2025/10/22/sumble-emerges-from-stealt...

Zipline.ai | REMOTE - Europe, LATAM | Contract work

We’re rethinking the data platform for the modern age of AI/ML workflows. Our founding team built the Chronon open source project that powers all major AI/ML workflows at companies like Airbnb and Stripe.

We are looking to hire senior Scala and big data experts on CONTRACT basis in EU or LATAM.

Prolonged experience (3 years minimum) with Scala or JVM is a MUST. Experience with technologies like Spark and Flink is a huge bonus. Experience building low latency online systems is also a huge bonus.

Our tech stack for those curious: Mill (build system), Scala, Vert.x, Spark, Iceberg, Flink. We integrate with various cloud providers and streaming / KV store connectors such as GCP - BigQuery / Dataproc / PubSub, AWS - EMR / DynamoDB, Kafka with more in the works

Apply by reaching out at hello@zipline.ai with your resume or LinkedIn profile

Renaissance Philanthropy | MLE/Full-stack | Remote (worldwide)

Renaissance Philanthropy's aim is to activate a virtuous circle of increasing ambition and impact between philanthropists and innovators: by identifying frontier experts both in science and in new ways of solving problems; by tapping into the growing number of emerging philanthropists; and by building multi-sector initiatives that can harness the power of philanthropy, markets, and governments.

RenPhil's Engineering Hub supports mission-driven, grant-funded educational technology projects that seek to improve educational outcomes in fundamental skills like math and reading. The Engineering Hub consists of data scientists, machine learning engineers, and full-stack developers who collaborate with researchers and entrepreneurs to build scalable, measurably effective tools for teachers and students.

We’re looking for folks who:

- can speak the languages of both research and engineering

- are creative problem solvers

- are comfortable with navigating ambiguity

- want to help create a world where all children receive a high-quality education.

If this sounds like you, please apply!

https://www.renaissancephilanthropy.org/careers

Rechat | API Engineer, Front End Engineer | Remote

Rechat is the leading AI-powered operating platform for real estate brokers and agents. Think Shopify for real estate—a mobile-first super app with marketing automation, workflow management, and everything agents and brokers need to run their business in one place. We’re a small, sharp team building a big, sophisticated product without the usual corporate nonsense.

Why You’ll Like It Here:

  Remote-first with flexible hours

  Minimal meetings—we focus on real work

  No tech hype-chasing—we use the right tools, not the latest trends

  Flat team structure—no layers of bureaucracy

Who We’re Looking For:

  Senior Frontend Engineer (TypeScript, React) – Own the UI and craft intuitive experiences

  Senior Backend Engineer (Node.js, PostgreSQL) – Build and refine our robust, high-performance backend

If you thrive in small teams solving big technical challenges, reach out to emil+hn@rechat.com.

Unto Labs | San Francisco, CA | ONSITE (Hybrid OK), REMOTE (US) | Full-Time Unto Labs is developing the Thru Layer-1 blockchain (https://thru.org)

We recently announced $14.4 million in funding to make blockchains & digital assets useful for the world. Founded by Jump Crypto alumni and core contributors to the Solana protocol and the Firedancer client (https://github.com/firedancer-io/firedancer), we’re tackling fundamental scalability, performance, and usability challenges in distributed ledgers.

Our runtime conforms to the RISC-V specification—moving away from domain-specific VMs, DSLs, and bespoke compiler toolchains that limit developer and institutional adoption. You can write smart contracts and programs in any LLVM compatible programming language and reason about a standard ISA in RISC-V. Components are developed in C for maximal control over performance and resource usage.

We believe there is a unique window of opportunity to developer fairer, more accessible, and more global financial products on resilient public blockchains.

You can check out our docs and open-source developer tooling at docs.thru.org and https://github.com/Unto-Labs/thru/

We are hiring for the following role(s):

- Systems Engineer: https://jobs.ashbyhq.com/unto-labs/13df6bea-b253-4c80-ae05-5...

iGent AI | London, UK (Hybrid, 3 days/week) | Multiple Roles | Full-time | https://igent.ai

We're building coding agent systems for large-scale industrial projects, and an agentic cloud.

Why join:

- Small, senior team: ex-DeepMind, OpenAI, Microsoft Research, Amazon, and Cambridge University, multiple PhDs

- Hard problems across distributed systems, OS/sandboxing, ML and LLM inference/post‑training. Real users; ship to prod.

- Big Tech salary + options.

Open roles (all Senior/Staff; hands-on):

- Full-Stack - design and build new coding agent experiences, working with a top designer

- Agent Infrastructure - branching sandboxes, filesystems, orchestration, observability

- Backend / Eng Lead - build cloud from first principles; distribution, sync, load-balancing, events

- LLM inference & post-training - long context tech, RLVR, vLLM, performance

- Devrel & GTM – live-developing, tutorials, OSS/community, hackathons - drive adoption

You might be a fit if:

- 5+ years building and operating production systems (or exceptional evidence).

- Own 0→1 projects; comfortable reading & generating lots of code.

- Public work (OSS/papers/blogs/products) or strong portfolio.

Do apply! https://www.igent.ai/join-us

MaFi Games | Senior SWE/Game dev | Contract preferred | Remote | C#

Hi, I’m the co-founder of MaFi Games – an indie studio behind the game Captain of Industry. We are a small but passionate team who gave up their jobs at Google and Nvidia to pursue building the best factory simulation game possible, and we need more hands!

We are looking for an experienced software engineer to grow the team and accelerate our progress. We strongly prefer candidates with a background in game development, experience with 3D graphics, and performance optimizations.

Some reasons you’d enjoy working with us:

* A multicultural, collaborative, and innovative work environment where your voice is heard.

* Fully remote job with flexible working hours and vacation schedule.

* Long-term full-time collaboration (not a fixed-term contract).

* High quality C# code base, code reviews, tests.

* High work satisfaction, work on a popular video game with a wonderful community.

* No bureaucracy, 1 regular meeting per week.

As an example of our technical work see https://www.captain-of-industry.com/post/cd-31. We also have a unique signal-free train system: https://www.captain-of-industry.com/post/cd-46

If interested, please see the detailed info,requirements, and application instructions at https://www.captain-of-industry.com/jobs, thanks!

Note: We are also looking for a 2D game UI/UX designer and a SFX artist.

Onefish AI | AI Fullstack Engineer | San Diego, CA (On-Site/Hybrid) | Full-Time | Starting $80K + Competitive Equity (Path to $300K)

Onefish AI is building a revolutionary offline-first Progressive Web App (PWA) to deliver AI consulting to small and medium-sized enterprises (SMEs). We are disrupting the AI consulting market by providing robust, game-like AI tools that are 100% functional offline, boosting efficiency and cutting waste for real-world businesses. Our unique hybrid architecture combines browser-based Python execution (Pyodide) with intelligent cloud routing to empower businesses where connectivity is a challenge. We are looking for a Founding AI Fullstack Engineer to own and build this core hybrid architecture from the ground up. This is a rare blend of: Cutting-edge R&D (multi-agent AI systems, browser ML) Advanced Engineering (offline PWAs, Pyodide, Go/FastAPI routing) Direct Business Impact (building solutions that solve immediate SME problems) The ideal candidate will be an expert in Python (specifically for single-source browser + cloud runtimes) and have deep experience with Svelte, Pyodide, FastAPI, Go, PostgreSQL, and Docker. You will be responsible for everything from PWA Service Worker architecture and data synchronization to multi-agent LLM design and model optimization for offline performance. If you are a builder energized by creating a highly complex and unique tech stack to solve a massive market need, we want to talk to you. This role offers the Lead Engineer → CTO trajectory. To apply, submit your Resume + GitHub + 1-page cover letter + 3 references to: jobs@onefish.ai Subject: "Candidate: AI Fullstack Engineer - [Your Name]"

Note on Compensation & Growth: The $80K is a starting base salary, with a clear path to $300K+ total compensation (salary, bonuses, equity, and benefits) based on demonstrated technical contribution and business performance.

NIL Club | https://nilclub.com | Remote (US only)

Role: We are looking for a skilled Full Stack React Native Mobile Developer to join our innovative team. You’ll focus on creating and maintaining a mobile application to help student-athletes monetize their NIL (name image likeness). The ideal candidate should be proficient with modern development practices, leveraging AI tools daily for productivity and innovation.

Stack: Typescript, React Native, Expo, React, Next.js, MongoDB, Inngest

More info and how to apply: https://nilclub.notion.site/Senior-Full-Stack-React-Native-M...

AIRMO | Embedded SWE, Electronics Engineer | Berlin - onsite | Full-time

At AIRMO we're building the single source of truth for GHG emissions data, starting with methane. We are developing a suite of active and passive optical sensors for UAS, aircraft and satellite platforms, and are planning to launch our first satellite late 2026.

We're looking for an electronics engineer and an embedded software engineer to join our team in Berlin.

Learn more here: https://www.airmo.io/careers

  Location: London
  Remote: Hybrid
  Willing to relocate: No
  Technologies: React, Java, Python
  Résumé/CV: https://damonhayhurst.github.io/cv/
  Email: damonhayhurst@gmail.com

I'm a product engineer through and through, seeking greater ownership across both sides of the development lifecycle.

Harvard SEAS | https://metareflection.seas.harvard.edu and https://namin.seas.harvard.edu | Postdoctoral Fellow | MA | ONSITE

I am looking for a postdoctoral fellow interested in the intersection of programming languages and artificial intelligence, in particular verification and large language models.

Our main goal is to create a PL+AI system that is the best at verified program synthesis. We will use the verification-aware programming language Dafny and co-evolve an LLM and a discovery system for Dafny.

Please contact me at namin@seas.harvard.edu if interested. Include a CV and GitHub link.

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

We’re building the account intelligence layer (the missing brain between the data warehouse and enterprise apps) to orchestrate AI agents that actually move revenue and retention, not just demo well.

We’re live with several enterprise customers and hearing: “I’m super excited!! You’re changing our lives!!” — Account Manager (mid-market).

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

- Fully covered healthcare for you and your dependents

- 401(k) plan

- Flexible time off

Learn more: https://www.cora.ai/

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

Polar Sky | Bay Area | Full-time | Founding AI Engineer

Generative AI is rewriting how organizations use data, and breaking traditional security models in the process. We’re a team of cybersecurity, AI, and systems experts building the foundation for secure, trustworthy AI in the enterprise.

We're looking for a Founding AI Engineer who loves building with AI -- crafting context pipelines, integrating and evaluating LLMs into production systems, and delivering AI-native product experiences. You'll work on all parts of Polar Sky, from the data and eval systems to the reasoning, retrieval, and orchestration systems.

Apply online here: https://ats.rippling.com/polar-sky/jobs/a04ed5b7-6202-45e6-b....

Adobe | Senior Software Engineer (Real-Time Customer Data Platform) | Full-Time | ONSITE – (San Jose, CA)

My team at Adobe is hiring senior engineers to scale the Real-Time Customer Data Platform, which processes trillions of events to power real-time personalization for global brands. This is deep, low-latency distributed systems work — not typical enterprise app dev.

We use: Java, Scala, Spring Boot, Kafka, Spark, Flink, Cosmos DB, Aerospike, FoundationDB, Delta Lake, K8s, Azure/AWS, Docker, OpenAI, Vector DBs.

Looking for:

• 5+ years building large-scale distributed or streaming systems

• Strong backend skills (Java/Scala, concurrency, perf tuning)

• Experience with Kafka/Spark/Flink and cloud-native systems

Bonus: Martech/Adtech, identity resolution, or personalization experience.

Email me at skatkar@adobe.com with “HN” in the subject, or apply here:https://careers.adobe.com/us/en/job/ADOBUSR160198EXTERNALENU...

Trinsic | Software Engineer | REMOTE (North America) | Full‑time

We’re building the first Identity Acceptance Network—the “Visa for ID.” Humanity is editing genes, starting space tourism and working on artificial intelligence. Meanwhile, identity verification is still done by taking pictures of plastic cards . We’re bringing identity into this new age, where trust is essential and becoming more so every day with AI. We enable accepting digital IDs that users already have (mDLs, BankIDs, reusable IDs) and verify users ~10x faster across 40+ networks covering 500M+ people.

Role

- Software Engineer (#5 on the team; ~20% of eng capacity). High ownership, product-minded, backend and systems leaning.

- You’ll ship fast, prune scope, and help shape our engineering culture.

- You’ve thrived in early-stage environments, can tackle fires independently, and care as much about product as code.

- Strong backend experience; generalist who enjoys moving up/down the stack.

- You care deeply about user privacy and data security.

Stack & ways of working

- .NET (C#) backend, React + TypeScript frontend, Azure, GitHub CI/CD.

- Remote‑first in North America; strong async work habits; <5 hrs/week of recurring meetings; frequent pairing/huddles.

- We’re keen but responsible adopters of AI tooling to hit our high bar of excellence.

Comp & benefits

- Salary set by a transparent formula (we target ~60th percentile cash for our stage) + meaningful equity, usually 90th+ percentile for a startup of our stage.

- Premium US healthcare (75% of premiums covered for you & dependents), at least 15 days PTO, $900/yr fitness stipend, $350/mo coworking or $200/mo home office, first week is “Think Week” to help you transition into your new role, paid family leave, top‑tier laptop, twice‑yearly in‑person offsites.

Learn more / apply

- JD: https://trinsic.notion.site/Software-Engineer-163b6be993cd80...

- Comp philosophy: https://trinsic.notion.site/Compensation-Philosophy-bf9b66a5...

- Working at Trinsic: https://trinsic.notion.site/Work-at-Trinsic-0faef9dbfbd84627...

How to get in touch

Reply with your GitHub/LinkedIn + a few lines on what you’ve built, or email jp@trinsic.id.

If you’re North America‑based and excited about identity, I’d love to talk.

JP, CTO @ Trinsic

Goblins | https://goblinsapp.com | Founding Engineer #3 | Williamsburg, New York | ONSITE | $100-200k (+ generous equity)

In education, we have always traded off scale and quality. In a 30-student math class, half of kids are ready to accelerate while half are still working on their foundational skills, but teachers cannot be in 30 places at once, giving each student one-on-one support.

Until now. Imagine 30 teachers in every classroom—that's how Goblins feels. Students draw math on any device, and our AI figures out the "why" behind their confusion, giving instant feedback and building conceptual foundations. (Try it out here! https://app.goblinsapp.com/onboard)

Goblins launched to school districts in the spring of 2025. Since then we've built a waitlist of thousands of teachers and sold Goblins to districts across the US (we'll hit 100k+ paid students this year!). We are in the unique position of having a product that is both highly differentiated and demanded :)

Technical problems that we find interesting:

→ Building knowledge graphs that adapt to student performance in real-time, routing them to the optimal next problem they should solve to maximize learning and engagement.

→ Extending our handwriting recognition from digital canvas to real paper through Chromebook cameras (think real-time OCR on math equations through low-quality webcams with poor lighting)

→ Creating interactive mathematical lessons (think 3blue1brown, but conversational) that remediate student misconceptions.

You'll be joining founding team members Sawyer (CEO, former Head of Design at X1 [acquired by Robinhood] and math teacher) and Alp (CTO, ex-Stripe and Amazon), plus two other exceptional founding engineers.

We move fast, care deeply about craft, and obsess over delighting users. If you're interested, email alp@goblinsapp.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 an opportunity for senior engineers and product managers to join us at a moment and shape a deep-tech product from its earliest stage.

We're currently seeking talented individuals for the following openings:

* Program Synthesis Engineer

* Bayesian Software Engineer

* Senior Product Manager

Learn more, see role details, and apply via: https://planting.space/joinus/

Questions? We'd be happy to hear from you at: talent@planting.space