Fieldguide (fieldguide.io) | San Francisco, CA | HYBRID | FULLTIME

Vertical AI SaaS for Accounting & Audit | Fieldguide is a 150 person Series C start-up transforming how audit, advisory, and assurance work gets done. Fieldguide brings professionals and agentic AI together to modernize engagement delivery from planning through close, enabling audit and advisory practitioners to deliver higher-quality work, strengthen client experiences, and unlock growth for the decade ahead.

Hiring: - All Levels: AI Platform and Product Engineers

- All Levels: Infrastructure Engineers

- Lead Product Designer

- Forward Deployed Engineers

- Software Engineer, AgentOps

- Lead Security Engineer

- Lead Compliance Manager

Apply here: https://www.fieldguide.io/careers?utm_source=HackerNews

Root Insurance (https://www.joinroot.com) | Senior Software Engineer | Fully Remote (HQ in Columbus, OH; occasional on-sites with provided travel)

Root uses technology to reimagine auto insurance — better pricing, better experience. Our engineering team builds a flexible platform where product designers and quantitative scientists can rapidly test, deploy, and iterate.

The Partner Activation team is hiring a Senior Software Engineer experienced with Ruby on Rails and API design in an enterprise setting. We power Root's embedded partnerships (Carvana, Experian, Toyota, Hyundai, and more) and you can see more of what we build here: https://root-bind-api.readme.io

This team sits at the intersection of multiple internal teams and external partners, mostly working on greenfield projects that bring modern tooling to legacy integrators. As the team's scope has grown, we're adding a dedicated engineer to own this work long-term. You'll coordinate across teams and with non-engineers regularly, so clear communication matters as much as technical chops. We're also exploring AI for integration-facing products (external dashboards, support tools, intake management) to reduce manual engineering overhead in our growth pipeline.

Open roles:

- Senior Software Engineer: https://ats.rippling.com/joinroot/jobs/125eb9e1-6121-4455-8b...

- Technical Services Engineer (partner-facing, non-IC): https://ats.rippling.com/joinroot/jobs/0e51f79d-07ef-47cf-93...

If either role seems like a good fit, mention that {{my username}} referred you via HN so I can review your application. You can also reach me on LinkedIn: {{my username}}-610b2591.

Weave Platform (https://www.weave.bio/) | San Francisco, CA | HYBRID | FULLTIME

Regulatory AI SaaS for Biotech | Weave Bio is a <50 person Series A start-up building an AI-native regulatory automation management platform for novel therapeutic candidates (specialty drug development).

Hiring: - Senior or Staff Backend Engineer (Django + Python)

- Senior or Staff Frontend Engineer (Typescript + React)

- Staff DevOps Engineer (AWS, Linux, SRE)

- Senior Product Designer

- Senior Product Manager

- Senior/Lead SDR

Apply here: https://www.weave.bio/careers-at-weave-bio/

In-office days are Tues/Wed/Thurs; WFH days are Mon/Fri.

Rebuild | Sr. Software Engineer & Software Engineer | Full time hybrid NYC

Apply here: https://www.rebuild.work/careers

Reach out for more info: at@rebuild.work

Oscilar.com | Sr/Staff Software Engineers & AI PM | REMOTE (US/Canada/Brazil/Poland/UK) | Full-time AI Risk Decisioning™ platform that helps organizations manage onboarding, fraud, credit, and compliance risks Open roles: - Engineering Manager - (Brazil)

- Sr./Staff Java Backend Engineer (Brazil/North America)

- Sr./Staff Infrastructure Engineer (North America/Europe)

- Staff GenAI Engineer

- Staff SDK Engineers - Web & Android

- Sr./Staff Data Scientist

- Full-Stack Engineer - AI Agent Platform

- AI Product Manager

Apply at: https://jobs.ashbyhq.com/oscilar?utm_source=HackerNews

GitBook | Product / Platform / Security Engineers | Remote (EU); Amsterdam

We're building the AI-native platform for documentation. Teams use GitBook to create and leverage product knowledge — technical docs, API references, user guides, and FAQs.

GitBook is AI-native for both readers and writers (human or otherwise). We provide the tooling that helps technical writers and product teams stay on top of the fast-moving products they're documenting.

We're growing our engineering team and are currently hiring for:

- Product Engineers Engineers who enjoy working closely with customers to solve real problems. We don't have PMs or product owners — you'll talk directly with users, ship features, and iterate quickly based on feedback.

- Platform Engineers Engineers with experience building and scaling public-facing web platforms. GitBook serves 120M+ page views per month, and our content model presents challenges around concurrent editing, caching, and large-scale delivery.

- Security Engineers Hands-on engineers focused on protecting our users, infrastructure, and brand. You'll help us strengthen security across the organization and own initiatives from concept to production.

Contact me directly steven@gitbook.com or https://www.gitbook.com/careers (Apply via the Product Engineer role regardless of your background.)

Fold | Remote (US Only) | Senior Back End Engineer | Full-time

Fold is a publicly listed bitcoin financial services company building the tools people need to earn, buy, sell and live on Bitcoin. We're looking for a Senior BE Engineer to help build the financial infrastructure behind our products - payment processing, ledger systems, card transaction flows and event-driven pipelines.

  - 5+ years software engineering experience
  - Strong in: Java or similar (Kotlin, Scala, C#)
  - Experience with: production microservices, distributed systems
  - Familiar with: messaging/event streaming (Kafka, Pulsar)
  - Solid relational database and data modeling skills
  - Nice-to-have: fintech, payments, ledger/accounting domains
  - Nice-to-have: event-driven architectures, CQRS, event sourcing
  - Nice-to-have: Micronaut, Quarkus or similar modern Java frameworks
  - US residency (regulatory requirement)

Benefits: - Competitive salary + equity - 401k with 3% match - Unlimited PTO + yearly vacation stipend - Full health/dental/vision - Paid parental leave - Regular team meetups - Bitcoin starter pack (hw wallet included)

Email tiffany.sawhney (a) foldapp.com if you have questions or apply here: https://ats.rippling.com/fold-inc/jobs/514ba20e-a93e-4960-ad... [0] https://foldapp.com

Location: Seattle OR Arlington, United States. Hybrid.

Title: Knowledge Development Engineer II (Native AI Software Engineer)

Company: Remitly(RELY)

Posting Link: https://remitly.wd5.myworkdayjobs.com/Remitly_Careers/job/Se...

Bitrise (YC, CI/CD for DevOps) | Senior/Staff Infrastructure Engineer | Remote (EU); Budapest, Hungary

Own the full stack for real: BGP/EVPN, transit, data center hardware, one of the world's largest Mac build fleets, and a private cloud spanning multiple locations — not just wiring up AWS components. Hybrid Linux/macOS environment, heavy Terraform/Ansible, usage. If blinking LEDs and routing tables get you going, this is the rare infra role where you can touch everything end-to-end.

https://bitrise.bamboohr.com/careers/130

By turning legal code into AI code, Norm enables enterprises to move faster and more comprehensively in their legal and compliance processes with reliability and trust. Norm Ai, the leading Legal & Compliance AI company, has a client base with a combined $30 trillion in assets under management.

Norm’s platform combines frontier AI, proprietary legal reasoning systems, and embedded legal and regulatory expertise.

We have recently raised more than $140 million, backed by Blackstone, Bain Capital, Vanguard, Citi, New York Life, TIAA, Coatue, Craft Ventures, Henry R. Kravis (KKR co-founder), and Marc Benioff (Salesforce CEO).

Norm Ai pioneered Legal Engineering, the process that empowers lawyers to build and supervise domain-specific AI agents with Norm’s proprietary suite of no-code software tools. We hired dozens of lawyers from premier U.S. law firms and trained them as Legal Engineers, who specialize in Large Language Model powered legal workflows.

Norm Ai technology is deployed inside many of the largest and most consequential institutions in the world. The company is growing quickly and hiring in NYC across all teams, including:

- Full Stack Engineer, Senior + Staff ($190k-270k)

- Engineering Manager ($235k-270k)

- Applied AI Engineer ($220k-285k)

- Forward Deployed Engineer ($145k-250k)

We're also hiring for many non-technical roles. These roles are hybrid/in-person in NYC. The best way to apply is online on our website (we review every application!). Full list here: https://jobs.ashbyhq.com/norm-ai?utm_source=7ow8wN5o3g.

SafetyWing

Partnerships Manager | Remote | Full-time Platform Business Partner | Remote | Full-time B2B Content Lead | Remote | Full-time

At SafetyWing (YC W18), we’re building a global social safety net for remote workers—simple health, insurance, and retirement products designed to replace national welfare systems. Our mission is to remove geographical borders as a barrier to equal opportunity and freedom for everyone. If we succeed, we believe this will be one of the most important tasks of our time.

We're hiring a number of roles at the moment. Check out details and express your interest here: https://safetywing.pinpointhq.com/

SuppMatch | CTO | Warsaw, Poland | Hybrid + International Travel | USD 85K–102K + Equity

SuppMatch is an AI-powered supplement recommendation engine for e-commerce platforms. We integrate into online supplement retailers, pharmacies, and marketplaces to deliver ultra-personalized, science-backed recommendations in real time. Think of it as the AI intelligence layer for the global supplements market.

Stack: Python, TypeScript, React Native, Node.js, GraphQL. AI/ML: LLMs, NLP, vector databases (Pinecone/Weaviate), PyTorch, TensorFlow, Hugging Face, LangChain. Infra: AWS/GCP, Docker, Kubernetes, CI/CD. E-commerce integrations: Shopify, PrestaShop, Magento, custom.

This is a startup CTO role. You'll own the full technical vision; architecture, AI engine, data pipelines, integrations, team, while still pushing code and joining partner calls. We're live in production, in active commercial conversations across 8+ markets (Poland, Germany, UK, Italy, Austria, Czech Republic, USA), and closing a seed round.

Requirements: Polish & English fluency. Warsaw-based (hybrid). Hands-on experience with AI/ML in production. Previous CTO / VP Eng / founding technical lead at a fast-growing startup.

jacob@suppmatch.ai | https://suppmatch.ai

SuppMatch | CTO | Warsaw, Poland | Hybrid + International Travel | USD 85K–102K + Equity

SuppMatch is an AI-powered supplement recommendation engine for e-commerce platforms. We integrate into online supplement retailers, pharmacies, and marketplaces to deliver ultra-personalized, science-backed recommendations in real time. Think of it as the AI intelligence layer for the global supplements market.

Stack: Python, TypeScript, React Native, Node.js, GraphQL. AI/ML: LLMs, NLP, vector databases (Pinecone/Weaviate), PyTorch, TensorFlow, Hugging Face, LangChain. Infra: AWS/GCP, Docker, Kubernetes, CI/CD. E-commerce integrations: Shopify, PrestaShop, Magento, custom.

This is a startup CTO role. You'll own the full technical vision; architecture, AI engine, data pipelines, integrations, team, while still pushing code and joining partner calls. We're live in production, in active commercial conversations across 8+ markets (Poland, Germany, UK, Italy, Austria, Czech Republic, USA), and closing a seed round.

Requirements: Polish & English fluency. Warsaw-based (hybrid). Hands-on experience with AI/ML in production. Previous CTO / VP Eng / founding technical lead at a fast-growing startup.

jacob@suppmatch.ai | https://suppmatch.ai

Zattoo | Video Engineer / Engineering Manager / Principal Engineer | Berlin, Germany | Onsite + Hybrid | Full Time

Multi roles in the video engineering space: Streaming, Encoding, C++, Golang, CDN, Media Delivery, Live, VOD, vodever!

Zattoo: Back in 2005, we pioneered Europe’s first TV streaming service. Today, we’re the world’s first certified climate neutral TV streaming provider. 3 million users across three countries. Over 230 colleagues of 47 nationalities.

// Video Engineer (C++): https://grnh.se/jl0287q2teu

// Engineering Manager - Ingest & Storage: https://grnh.se/10frzmw2teu

// Engineering Manager - Streaming & CDN: https://grnh.se/yces6q02teu

// Principal Engineer Streaming & Ad Technologies: https://grnh.se/pv4nrr62teu

CEF AI (cef.ai) | Blockchain Engineer, Founding Platform Engineer | SF, Berlin (Remote) | €100K–€165K + Equity We're building decentralized AI infrastructure, an inference platform for sovereign AI agents unifying orchestration, data, and compute. Small team, high ownership, real equity. Blockchain Engineer — Rust/Substrate L1 protocol dev. Custom pallets, ZK primitives, on-chain governance. 7+ yrs Rust. Founding Platform Engineer — Core backend, APIs, SDKs, developer tooling. Build systems from scratch, not maintain them. 4+ yrs production software. Fast hiring process, paid 5-day trial. Direct access to founders.

Apply: https://join.com/companies/cefai

AI startup (stealth) | Co-founder / AI engineers | REMOTE

We’re building an AI system that will disrupt the SaaS market as a whole. The foundation already exists and is running.

The concept itself is not difficult for experts once it becomes public, but the architecture and timing are key. We’re moving extremely fast.

Plan:

- release an open-source core - build a large community around it - scale fast enough to push competitors out

Current state is first friendly test customers onboarding in a few days. This is just 1 week old.

We’re currently reaching out to major AI labs since they could profit a lot from this, but we don’t need them to scale aggressively.

Right now there’s no significant funding yet, but the pace is extremely high and this could gain traction very quickly. We can likely raise ~€250k fairly quickly via public funding in my country, without giving up shares, but first we want to assemble the right people and make a plan together.

Looking for:

- someone with founder experience / VC contacts, or - hardcore AI engineers like me who ship extremely fast

We are currently EU-based, but the company can be set up wherever makes most sense for the business. It's huge fun to work with it.

Contact: https://t.me/aeagentic

— Raffael & Team

Rubin Observatory / SLAC | Menlo Park, CA REMOTE (US) | SRE / Software Engineer | Full-time

The Vera C. Rubin Observatory in Chile is a new world-class astronomy facility designed to create a 10-year time-lapse map of the southern sky. Featuring the world’s largest digital camera it emits 20GB of raw pixels per minute, and we are developing the Prompt Processing System that will distribute an alert on every astrophysical object that has moved, changed or appeared in real-time. (https://rubinobservatory.org/news/first-alerts)

This appointment is based at SLAC, a DOE-funded national laboratory hosting the data facility and many of the 80 scientists and engineers of the world-wide Rubin Data Management team. (https://www6.slac.stanford.edu/)

Keep Rubin's Alert Stream flowing. We are hiring an SRE to own the reliability of our Prompt Processing Framework, a Kubernetes-based, event-driven system using KEDA, Redis Streams, Kafka, and Postgres to scale near-real-time processing. You’ll write software to improve resilience, operate and evolve core infrastructure services, and build the monitoring, alerting, and on-call practices that keep the system robust and reliable during nightly observing operations.

Stack: Python, Kubernetes, Helm, ArgoCD, Kafka, Redis, KEDA, InfluxDB, PostgreSQL, Cassandra.

Details and apply here: ls.st/sre-ad

QuiverAI | San Francisco / Remote (US, Europe) | Full-time

QuiverAI is training foundational AI models and building tools for vector design. We’re creating multimodal systems that generate editable SVGs and design assets from texts, images, and sketches. Come build with us!

We’re hiring across design, engineering, and research:

- Product Designer https://quiver.ai/careers/product-designer

- Backend Engineer, API Platform https://quiver.ai/careers/backend-engineer-api-platform

- Design Engineer https://quiver.ai/careers/design-engineer

- Platform Engineer, Reliability https://quiver.ai/careers/platform-reliability-engineer

- Product Engineer https://quiver.ai/careers/product-engineer

- AI Research Scientist https://quiver.ai/careers/ai-research-scientist

- ML Engineer https://quiver.ai/careers/ml-engineer

San Francisco or Remote (US, Europe) for most roles. Apply here: https://quiver.ai/careers

CiceroAI | Founding Forward Deployed Engineer | Houston, TX | Remote or Onsite | Full Time

Cicero transformed the practice of law in ancient Rome. We are bringing that spirit back.

At CiceroAI(ciceroailaw.com), we are building the operating system for the front office of law firms — automating intake, qualification, and client onboarding for the 165,000+ law firms across the United States. Our goal is simple: help law firms respond instantly, sign better cases faster, and deliver justice to millions of people who currently wait days or weeks just to be heard.

We are looking for a Founding Forward Deployed Engineer to work directly with us and our clients and bring Cicero to life inside real law firms.

This role is for an exceptional engineer who: enjoys working directly with customers, can rapidly ship and iterate in production, wants to build technology that operates inside real businesses from day one.

You will deploy Cicero at law firms, build product alongside users, and help shape the foundation of the company.

If you want to build quickly, work closely with customers, and help transform how legal services operate, we would love to talk. To apply, send your resume and cover letter to founders@ciceroailaw.com

Arboreal Management / Great Expectations | Seattle (Hybrid) | Product Engineer

We run a next gen housing platform in the Pacific Northwest managing 6,300 homes, growing 25–50% per year.

We’ve been building an internal software platform (“Maynard”) that powers BI, automation, reporting, compliance, and operational workflows across the company. The founder has led much of the development so far and is looking for the first local engineering hire to help turn this into a real platform.

Tech: Node.js (Azure Functions), Svelte5/Tailwind, PlanetScale/Postgres. We make heavy use of modern AI coding tools.

Looking for a product-minded engineer who enjoys talking to users and shipping quickly inside a real operating business. Must be based in Seattle or Portland.

Apply: https://arborealmanagement.na.teamtailor.com/jobs/566214-pro...