Freetrade | London (ONSITE) | Full-time | https://freetrade.io | £75k-£140k

Freetrade is a commission-free investing app used by over 1 million people in the UK. Our team is expanding, and we’re seeking software engineers to evolve and scale our core investing platform. In this role, you will be instrumental in building and maintaining reliable and trustworthy systems for trade execution, clearing and settlement, asset servicing, and internal operational tools. You will also play a key role in shaping our technical direction and mentoring other engineers as our team grows.

Tech we use: TypeScript, Node.js, Postgres, and GCP

Note: We are three days in the office, located just around the corner from Old Street.

We don’t sponsor visas at the moment.

We are hiring across the board in engineering, data, people, marketing, risk & compliance and finance.

See all of our opportunities here: https://freetrade.io/careers

Ledgebrook | https://www.ledgebrook.com | Multiple roles (Engineering, Data, IT/Security, Product) | REMOTE (US, Canada, Poland ET-friendly) | Full-time | Visa: Not available

We’re a tech-enabled E&S MGA on a mission to modernize Specialty insurance. The industry is burdened with legacy technology and inefficient processes, preventing innovation at scale. We are changing that. Our goal is to become the best-in-class full-stack insurance and re/insurer, leveraging AI and data-driven insights to revolutionize underwriting, pricing, and risk selection. We believe in talent density—fewer, better people working together as one. We win as a team.

Open roles:

• Engineering Manager — https://app.careerpuck.com/job-board/ledgebrook/job/77.E51

• Fullstack Software Engineer (Backend, Python/TypeScript) — https://app.careerpuck.com/job-board/ledgebrook/job/08.75A

• Data and Analytics Engineer (Snowflake/dbt/Airflow) — https://app.careerpuck.com/job-board/ledgebrook/job/77.E5D

• Machine Learning Engineer — https://app.careerpuck.com/job-board/ledgebrook/job/77.E59

• Head/Director of IT & Security (SOC 2/IdP/MDM) — https://app.careerpuck.com/job-board/ledgebrook/job/77.E58

• Product Manager, Data and Infrastructure — https://app.careerpuck.com/job-board/ledgebrook/job/67.E5E

Our stack (role-dependent): Python, TypeScript/React, FastAPI, Node; Postgres, Snowflake, dbt, Airflow; AWS (ECS Fargate, S3, CloudFront, Route53, Secrets Manager), Terraform; Bedrock, LangChain/CrewAI; PowerBI

Requirements (vary by role): Strong ownership and bias for action; clarity in written communication; hands-on delivery in lean teams; comfort with ambiguity and high standards. Deep experience with one or more areas above (shipping production systems, data pipelines, LLM apps, or secure/AWS infra).

Benefits: Competitive comp + equity, medical/dental/vision, PTO, remote-first with periodic team onsites.

Apply: email hiring@ledgebrook.com with subject “HN: — ”. Please include a brief note on why Ledgebrook, a recent project you’re proud of, and your LinkedIn/GitHub. We’re actively hiring and will respond to applicants.

BuildBetter | Senior Engineer (Backend, Full-stack) | Full-Time | Remote (US) 170-200k base + equity | Visa Sponsorship not provided

BuildBetter is the product operations platform for customer-led teams. We've built an AI-first product that lets our customers, like Rappi, n8n, and Posthog, automate the operations work that lets them provide their customers with world-class product experiences.

We're looking for two senior engineers to join the team; our headcount has remained small while growing revenue, and we're now bottlenecked by development speed in a way that will make you invaluable. You'll have real ownership over your code from product ideation to customer support, and we'll be making substantive product updates weekly. We're looking for team players who are as fun to work with as they are productive, and are willing to compensate these two rolls commensurately - our aim is to be in the 95th percentile of equity compensation, and we expect that in exchange we'll have value-aligned employees who will help us grow the business.

Joining us will mean solving hard problems at the frontier of AI adoption, including:

- maintaining performance at scale

- building agent and workflow systems that automate real work for customers

- playing around with the latest models to figure out new experiences that we can offer our customers as cutting-edge models get released monthly

- building automation that's grounded in supporting product teams rather than automating them - our bet is that this is the likelier outcome out of the current generation of AI systems

Stack: Postgres / TS (Nest + React) / Hasura / EKS / S3 / LLM APIs / Python

Benefits:

- unlimited PTO

- $100/mo education stipend

- flexible hours: we measure productivity in terms of outcomes, not time, so as long as you're able to stay aligned, productive, and in regular communication, we don't really care what hours you work

Please reach out at:

nikhil (at) buildbetter (dot) app

MITTE.AI | Berlin, Germany | REMOTE (Europe/+- 2h timezone) | FULL-TIME | AI Creative Suite

We're building an AI Creative Suite that empowers creators with cutting-edge AI models and an advanced editor.

Join our team in Berlin or work remotely within +- 2 hours of our timezone (Europe, Türkiye welcome).

MITTE IN ACTION

https://x.com/azerkoculu/status/1945391849989976533

https://x.com/MaxVOAO/status/1961441059235352579

TECH STACK

Go, Elixir, TypeScript, React, Redux Toolkit

ROLES

Senior Frontend Engineer: https://mitteai.notion.site/Senior-Frontend-Engineer-258f3cd...

Senior Elixir Engineer: https://mitteai.notion.site/Senior-Elixir-Engineer-258f3cdf0...

Senior Full-Stack Engineer: https://mitteai.notion.site/Senior-Full-Stack-Engineer-258f3...

Mercanis | Hiring in Berlin or Remote EU (role dependent)

About us: Mercanis is building the Agentic AI Procurement Suite, enabling enterprises to automate procurement and supplier management workflows using AI. Backed by $30M+ from Partech, AVP, and Speedinvest.

⸻

Engineering Manager | Berlin, Hybrid Lead a cross functional product engineering team, work across the stack, and stay hands on (>20% contributing code). Collaborate closely with product and design to deliver user centric, scalable software. Tech includes Svelte, TypeScript, Node.js, NestJS, AWS, Postgres.

You have: Strong engineering background, 2+ years managing or leading engineers, experience with modern web stacks, a pragmatic and collaborative mindset. Berlin based, hybrid with flexibility for occasional remote days.

⸻

AI Agentic Engineer | Remote EU or Berlin/Barcelona Hybrid Build AI agents that automate procurement workflows across large enterprises. Work deeply with LLMs and orchestration frameworks, evaluate and integrate models, and ship production AI features. Tech includes Python, LangChain, AWS, OpenAI, Anthropic, and Bedrock.

You have: Strong applied AI experience, experience building agentic or multi step LLM workflows, familiarity with enterprise grade systems, passion for fast iteration and quality.

⸻

Technical Product Manager, Integrations | Berlin, Hybrid Own the integration strategy for enterprise procurement systems, especially SAP S4HANA and SAP Ariba. Work closely with engineers and enterprise customers to deliver scalable APIs and integration architecture. Translate complex business workflows into clear product requirements.

You have: 5–8+ years in Technical PM, Solutions Engineering, or Integrations, experience with ERP or procurement systems, strong API and data integration understanding. Berlin based, hybrid with flexibility for occasional remote days.

⸻

Apply: https://mercanis.jobs.personio.de/ More about us: mercanis.com

If you believe in ownership, iterative delivery, and building modern enterprise software the right way, say hello.

Prophet Town LLC | Various Software Engineering Roles | US – Remote and Hybrid | English fluency required | Full-time | $150K-$250K annual total comp (multiple)

I’m the founder, trying to do “enlightened business.” We are a people-first, fully-remote, boutique indie tech agency – building a team of talented, high integrity, and community-minded individuals first, then building businesses around them. Our leadership staff are ex-Fortune 100; everybody touches code. Notable recent projects: internal tools for Anduril, and voltagepark.com.

We’re currently especially seeking:

Frontend Engineers (React, NextJS, Typescript; Animations, Performance optimization; sfbay local a plus)

Teamcenter and Odoo developers (C++/Java/Python; Siemens Teamcenter; Custom applications, workflows, data model updates)

IoT Developers (Python, MQTT, GraphQL, AWS, Test Infrastructure)

Full-Stack Software Engineers (React, Python, Ruby on Rails; Database Design, Devops, and third-party API integrations)

Please apply using this Google Form: https://forms.gle/oJHSjofaxTjSPexW8. Applicants who submit before November 14 will typically receive a reply by November 21. Tier3 roles are typically 5-10 y/o/e with $150-$175k annual total comp. Tier4 roles are 11-20 y/o/e, $210-$250k annual total comp. Higher tiers exist, and we welcome exceptional applications.

Aviagen | Full-Stack Software Developer | Huntsville, AL (onsite) | Full-Time

Aviagen, a global poultry-breeding company supplying pedigree lines for broiler production, is looking for a Full-Stack Software Developer who loves building tools that users actually use and benefit from.

What you’ll do:

- Architect and build web apps that replace legacy systems, streamline business processes, or replace paper or excel based workflows. So far, our web-apps are vanilla JS, with C# / ASP.NET Core backends. We're open to JS frameworks where appropriate.

- Collaborate directly with stakeholders to identify pain points and deliver impactful solutions.

- Own the end-to-end lifecycle: idea, design, implementation, deployment, support.

What we need:

- 5+ years of software development experience, comfortable across front-end and back-end.

- Solid JavaScript/TypeScript skills, experience with REST APIs, relational databases.

- Enthusiastic about owning features, interacting with users, improving business workflows.

What we offer:

- Competitive salary + bonus + company benefits (details on request).

- Real ownership and visibility within a global company with the feel of a smaller team.

- Located onsite in Huntsville, AL - full-time. (Hybrid/remote not currently available.)

How to apply:

Send your resume to dmurph@aviagen.com - mention “HN Who’s Hiring” in the subject. Or apply via https://aviagen.wd1.myworkdayjobs.com/en-US/aviagen-careers/...

Also hiring:

- IT Data Analyst - help build dashboards and data tools for global ops: https://aviagen.wd1.myworkdayjobs.com/en-US/aviagen-careers/...

- Database Administrator (DBA) - manage and optimize our critical data systems: https://aviagen.wd1.myworkdayjobs.com/en-US/aviagen-careers/...

PrairieLearn (Remote US) — Full-Stack Software Engineer — TypeScript / Node / Postgres / AI

PrairieLearn (https://www.prairielearn.com) is an open-source assessment platform originally developed at the University of Illinois and now used by universities across the US (Berkeley, Princeton, Michigan, UIUC, and others). We power mastery-based learning, interactive question generators, and large-scale exams.

We’re a small, profitable, early-stage company (bootstrapped, no VC) and we’re hiring a full-stack engineer to help us continue to grow. You’ll work across the stack and have meaningful ownership from day one.

We’re also developing AI tooling in the product:

* LLM-based agents to help instructors create and test new question generators

* Vision-language models for grading student-submitted work (e.g., math derivations, diagrams, sketches)

This is practical, user-facing AI work with real-world impact — not a research sandbox.

Tech we use:

* Node.js / TypeScript backend, Postgres, AWS, React

* PrairieLearn is open core: https://github.com/PrairieLearn/PrairieLearn

You might be a fit if you:

* Have experience with full-stack web development (TypeScript / Python / SQL / HTML/CSS)

* Enjoy working directly with users (many are instructors and TAs)

* Want to own features end-to-end, from idea to rollout

* Are excited about building practical AI integrations, not just demos

Details:

* Location: Remote (US only)

* Salary: $100k+ depending on experience

* Benefits: Stock options, unlimited PTO, flexible hours

* Role: Full-time. (We’re not able to sponsor visas at this time.)

If this sounds interesting, please email jobs@prairielearn.com. We’d love to talk.

Official job posting: https://www.prairielearn.com/jobs

Pickaxe | Founding Typescript Engineer | Full-Time | In Person (SF)

Pickaxe (https://pickaxe.co/) allows coaches and consultants to build chatbots and agents for their clients. We're a small committed team of hackers focused on building a beautiful product for our customers. We just raised our seed and we're making our 3rd and 4th engineering hires.

Learn more here: https://pickaxe.co/careers/full-stack-engineer

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.

Today, we are hiring highly capable 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 everyone on our team has a high regard for those in the public service. We have a strong engineering culture. We are not a SaaS product or AI wrapper, and 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 incredibly ambitious. 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.

The potential impact of this work cannot be understated, and this is not the right job for you if you want to "join a cool new AI startup" and make a fast exit. However, if you care about our mission, then you will have the opportunity to make meaningful outcomes for society that will make you feel proud.

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

If you're interested in this topic, we recently proposed new models for identity in the financial sector:

https://blog.spruceid.com/modernizing-bsa-and-aml-cft-compli...

If you feel very strongly about what we do, please email me directly with your reasons and resume at wayne AT spruceid.com.

Radar Labs | Software Engineers (SRE, data platform, backend, full-stack, mobile) | Remote (US), NYC | Full Time | https://radar.com - Radar is the geo-location dev tool

- Doing 1B+ API calls per day

- Our main languages are Rust and TypeScript, we also use mobile and offline pipeline languages (Python, Scala, and Terraform).

- We're based in NYC with our HQ in Union Square and remote friendly (US)

Interesting things we're working on:

- HorizonDB, our Geospatial database written in Rust

- Precise indoor location more accurate than iOS and Android leveraging Ultra-Wideband, other mobile sensors and ML.

- Extracting raw map data from satellite maps and the web leveraging ML and AI

- Anomaly detection to identify spoofed locations

- Mobile infrastructure that automatically configures itself optimizing battery-life and location accuracy for different use-cases over time

- Multi-Region AWS K8s deployment, 99.99%+ availability

- Frontend tools to visualize and debug location data at scale

Check out our jobs page here: https://radar.com/jobs#jobs If you have any questions, feel free to reply here or you can e-mail me at tim@radar.com

Boundary (YC W23) | Software engineer (compilers) | Seattle, USA (in person) | Full-time

We are building a new programming language (BAML) to build AI agents -- the "typescript" for LLMs. We are open source: https://github.com/BoundaryML/baml

A big part of this language is all the tooling around visualizing non-deterministic code, visualizing code, and getting great observability (e.g. our language has type information at runtime unlike TS).

We are looking for engineers with experience with Rust, programming languages, and/or compilers. Any amount of experience is fine.

To apply: send an email to aaron@boundaryml.com with your resume and mention you came from HN

Oneleet (YC S22) | Multiple Roles | US & NATO Countries | Remote | Full-time

Oneleet is an all-in-one cybersecurity startup that has built its own Attack Surface Monitoring (ASM), Code Scanner, Device Monitoring, and Compliance Platform. We just raised a Series A and are growing at an rapid pace and working on some very exciting projects.

What we're looking for:

Strong problem solvers who can work independently in a remote environment - Security-minded professionals passionate about building robust, scalable systems - Comfortable working during Eastern Time

Tech stack: Go, TypeScript, React, Kubernetes

Open roles

* Software Engineer, Cloud Security Posture Management

* Application Software Engineer, Endpoint Security (macOS experience preferred)

* Fullstack Engineer, AI Implementation

* Security Program Manager (US/EU Timezone)

We offer:

- Competitive salary - Equity in a fast growing cybersecurity startup - 100% remote work - Company offsites every other quarter (past offsites have been in The Netherlands, Portugal and Italy)

If you're interested in joining our team, please reach out to samuel<at>oneleet<dot>com with the subject line "HN: <Job Title>" and your resume attached.

Alternatively, you can also apply at https://jobs.ashbyhq.com/oneleet

Stellar (https://stellarcs.ai) | Founding Software Engineers | Amsterdam, the Netherlands | Full-time | No Visa Sponsorship

Stellar is building the go-to AI voice agent platform for customer support, enabling incredibly human-like customer service over the phone. We're a young and rapidly growing startup that has already proven traction, with a number of well-known companies among our initial customers.

To see some of our AI voice agents in action, see https://www.stellarcs.ai/demo-showcase

We're looking for founding software engineers to help us scale Stellar's platform globally. As one of the first members of our engineering team, you’ll play a key role in Stellar's journey and have the opportunity to help shape our architecture, engineering culture and product and engineering roadmap.

Tech stack: Go, Node.js, Typescript, React, Next.js, Encore Cloud, GCP

What you’ll do:

- Build performant APIs and backend services in Go and Typescript (Node.js)

- Develop Stellar's frontend in React, TypeScript and NextJS, to allow companies to effectively design, test, deploy and monitor their AI voice agents

- Design a scalable, fault-tolerant system architecture that can handle large volumes of concurrent real-time audio conversations & agent interactions while maintaining low latency

- Work on Stellar's AI agent framework, at the intersection of software engineering and AI engineering

- Design and implement a platform that meets enterprise standards in terms of security, compliance, resilience and data privacy

- Build API integrations with external systems to enhance the capabilities of Stellar's agents

- Help shape the early engineering culture as one of the first hires of a young and growing tech startup

Why join: you'll be joining at a pivotal time in our growth, in a role with a high degree of ownership and strong growth potential. Join a small but talented team, coming from high growth startups and scale-ups such Framer, MessageBird, Adyen and Crisp.

More details about the role here: https://www.stellarcs.ai/careers/software-engineer

Apply: Send us an email at info@stellarcs.ai, and mention you came from HN

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), GitHub Actions.

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 careers@repspark.com with your resume/links (GitHub, portfolio).

Artificial Analysis | https://artificialanalysis.ai | Full Stack Engineer, ML Engineer, Member of Technical Staff | Onsite in San Francisco or in Australia/New Zealand | Competitive Salary + Equity

Artificial Analysis is an independent AI benchmarking and insights provider. We benchmark AI to help engineers and companies understand AI and make informed decisions regarding which AI technologies to use. We are fast growing with a team of 20 and have backing from investors including Nat Friedman, Daniel Gross & Andrew Ng.

We are hiring for four roles: 1. Full Stack Engineer: Full Stack Engineer to support our benchmarking of AI and with communicating these benchmarks to our users. Proficiency in Typescript & Python required. Familiarity with LLM APIs preferred. Tech stack: Javascript/Typescript, Node.js, React/Next.js, Python.

2. ML Engineer: ML Engineer to support our benchmarking and evaluation of AI software stack. You will design and run benchmarks and evaluations of different AI models. Strong analytical skills and proficiency in Python required.

3. Member of Technical Staff: You will design evaluations of different AI models and work to translate technical insights to analysis that helps companies navigate AI.

4. Product Manager (AI Media Generation): You'll work closely with us to develop and enhance our media generation (Image, Video, Speech, Music) arenas and leaderboards, contributing to product strategy and execution at the intersection of creativity and AI.

Apply at hiring (-at-) artificialanalysis.ai with your resume, github and dot points on relevant experience (including anything you've built). Add | HackerNews to email subject line.

Stellar Science | Hybrid (USA) Albuquerque NM, Washington DC (Tysons VA), Dayton OH | Full time, interns/co-ops | U.S. citizenship required | https://www.stellarscience.com

Company: We're a small scientific software development company that develops custom scientific and engineering analysis applications in domains including: space situational awareness (monitoring the locations, health and status of on-orbit satellites), image simulation, high power microwave systems, modeling and simulation, laser systems modeling, AI/ML including physics-informed neural networks (PINN), human body thermoregulation, computer vision and image processing, high performance computing (HPC), computer aided design (CAD), and more. All exciting applications and no CRUD. We emphasize high quality code and lightweight processes that free software engineers to be productive.

Experience: Other than interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field, plus preferably 3+ years of work experience, or a Masters or PhD in lieu of work experience. (Roughly 25% of our staff have PhDs.)

Technologies: Mostly C++23, Qt 6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and analysis projects use Python and C++. Some projects use Java or Typescript/React.

Apply online at https://www.stellarscience.com/careers/.

Crew Capable AI | Founding Engineer (Co-Founder Track) | Remote (US Based)

Automating order entry for mid-market manufacturers via AI. Working MVP, first enterprise contract pending ($500M company), entering implementation phase. Looking for employee #2 to own technical development and grow into co-founder.

What You'll Do: Build ERP/EDI integrations, implement LLM pipelines for document parsing and entity extraction, architect vector search/RAG for product catalog matching, own 90-day customer implementations, scale the platform.

Requirements: 3+ years full-stack (Python/React), experience with API integrations or ETL, comfortable with LLM orchestration, can work independently, genuinely interested in B2B operations.

Tech Stack: Next.js, TypeScript, Python, PostgreSQL, Gemini API, vector databases, AWS, ERP/EDI systems

Structure: hourly contractor (30-60 day trial) → co-founder equity if mutual fit.

Apply: daly@CrewCapable.com - subject "HN Founding Engineer"

GoGoGrandparent (YC S16) | FULLY REMOTE | Full-time | Able to work 4+ hours overlap with mainland US (global) | 1 x Tech Lead Engineer + 3 x Senior/Staff Backend/Full-stack/Frontend Engineers | $100k-$200k (partially location-dependent)

Build high-quality, robust engineering at the rarest of things - a Silicon Valley startup that is both wholesome AND profitable. We have 8-figure revenue, are YC-backed, and growing fast.

Tech stack (required): Back-end (Node, Typescript, MySQL, REST* / GraphQL), Front-end (Vue.js), deploy (AWS, Docker/K8s) Minimum 5 years experience (with Node or Vue).

2-stage interview process.

If you want to help older adults and people with disabilities, send your LinkedIn/CV to recruitment@gogograndparent.com (keep it brief) or apply at https://www.ycombinator.com/companies/gogograndparent/jobs

ConductorOne | ONSITE (SF / PDX) | Full-Time

ConductorOne is building the platform for identity security and least privilege automation — helping companies secure access to everything, without slowing people down. Our engineering culture emphasizes small, high-ownership teams that deliver measurable impact and move quickly.

We’re hiring across many areas:

  - Software Engineers – We’re growing our product development teams in SF and Portland.

  - Site Reliability Engineering – We’re looking for SREs and a hands-on SRE manager (SF or Portland) to own reliability, performance, and infrastructure as we scale.

  - Forward Deployed Engineering (FDE) – We’re building a brand-new customer-facing engineering org: we're looking for engineers who want to work closely with customers to modernize and automate identity operations, and a Manager, FDE to lead the team.

  - Governance, Risk & Compliance (GRC) – We’re building a new GRC function and hiring our first Compliance Engineer to help scale our security and audit programs.

We work primarily in Go and TypeScript, on AWS + Kubernetes.

Apply here: https://www.conductorone.com/careers