Kato | Senior Software Engineer | San Francisco, CA | ONSITE | Full-time Kato is building a compliance-first AI servicing platform for the $24B lending market. While others treat regulatory guardrails as an afterthought, we’ve built a regulatory rules system with an AI decision engine on top. Our first product is a Voice AI agent currently handling loan servicing calls for major fintechs like Bilt Rewards and Parafin.

We are backed by Pear VC and angels from Brex, Bridge, and Square. You’ll be our second engineering hire, working directly with our CTO (ex-Google/Brex EM) and CEO (ex-Goldman/Brex).

The Role: As an early hire, you’ll own mission-critical projects across the entire stack. You’ll lead the architecture of our real-time voice processing system, optimize LLM integrations for compliance-aware conversations, and build out our customer-facing dashboards.

Tech Stack:

Backend: Golang, PostgreSQL

Frontend: Next.js, TypeScript, React, Tailwind

Infra: AWS, Terraform, Kubernetes, Docker

AI/ML: LLMs, Speech-to-Text, Text-to-Speech

Requirements:

2-5 years of production software experience.

Strong API design and architectural thinking.

An "owner's mindset"—we are a small, high-intensity team where everyone drives product direction.

Experience with WebRTC, real-time audio, or FinTech is a plus but not required.

Location: San Francisco (4 days/week in-person).

To apply: https://jobs.ashbyhq.com/pear-vc/214dc247-0778-485b-8a3d-067...

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: Except for interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field. Masters or PhD is a plus. (Roughly 25% of our staff have PhDs.)

Technologies: Lots of 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++. Web projects use Java and Typescript/React.

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

Surge AI (https://surgehq.ai/careers) | Software Engineers (full-stack / product) and Strategic Project Lead, and many more https://surgehq.ai/careers | Full-time | ONSITE SF or NYC | Remote Our mission at Surge is to build the human infrastructure behind the next generation of models. We operate the largest human data platform in the industry and power the AI teams at all of the top AI labs. This year, we're been focusing on RL environments and agentic workflows to help our clients ship agents that interact with the world. Here are some examples of our past work:

- RL Environments and the Hierarchy of Agentic Capabilities: https://surgehq.ai/blog/rl-envs-real-world

- Building AdvancedIF: https://surgehq.ai/blog/advancedif-and-the-evolution-of-inst...

You’d be joining a rapidly growing team of former founders, engineering leaders and AI researchers from Google, Meta, Twitter, and Airbnb. We work in small groups, ship quickly, and value autonomy and ownership. No previous AI experience is required, if you have the engineering skills you can learn what you need on the job.

We're looking for senior engineers to work out of our offices in SF or NYC, or remotely. Please reach out to us at Email is hidden with a resume and 2-3 sentences describing your interest. Excited to hear from you!

DoShare Labs | India | Locations : New Delhi, Bangalore, NY(US) , SF(US) ,Remote Positions we're hiring for : 1. Technical Liaison :

Requirements:

2+ Years of Working in Tech Experience | Good Communication Skills | Bachelors or Equivalent Degree

2. Infrastructure Engineer :

Requirements:

3+ Years of Experience as Infra Engineer | Stack - Python, Go, Kubernetes, GCP/AWS/Azure , Cloudflare

3. Project Lead (UI/UX) :

3 + Years of Project Development Experience | Good understanding of market requirements | A/B Testing | Engineer or similar degree

4. Customer Support Executives [English OR Hindi]

2 Years of Customer Support Experience | Speaking Skills | Ability to follow tasks at hand

5. Marketing Posts (3 Positions)

Experience with Marketing and Advertisement | Out-of-the-box Thinking Ability | Led or Organised Events

Note: Keep the position you're applying for in the title.

Apply via Mail : Email is hidden

Float Technologies | Applied AI Engineer | Full-Time | ONSITE | New York, New York | $120k-225k https://www.float.tech/careers

At Float, we're building capital markets infrastructure. Our AI-native platform is tackling decades-old inefficiencies, creating technology that enables financial institutions to interact seamlessly and automate intelligently. Based in SoHo, New York and backed by top-tier venture investors, we're a team of engineers, designers, product managers, quants, and market experts shipping elegant solutions to complex problems. We move fast, care deeply about building things right, and work directly with our users to deliver products that transform how markets operate.

If interested, apply here https://www.float.tech/roles/ai-engineer

Procore | Multiple Engineering Roles (IC + Management) | Austin, TX | Onsite | https://careers.procore.com

Procore (NYSE: PCOR) builds the most widely used construction management platform in the world. Our software connects every stakeholder on a construction project — from owners to general contractors to specialty contractors — and we're used on projects worth hundreds of billions of dollars annually.

We're hiring across the engineering org in Austin, TX at all levels:

*Individual Contributors:* - Principal Software Engineer - Staff Software Engineer (Streaming Data Infrastructure) - Senior Software Engineer (Frontend) - Senior DevOps Engineer (Mobile Platform) - Security Engineers (multiple levels)

*Management:* - Software Engineering Manager (Custom Fields) - Software Engineering Manager - Senior Manager, Software Engineering - Engineering Manager (Datagrid)

Our core platform is a large-scale Ruby on Rails monolith serving thousands of concurrent users on active construction projects. If you enjoy the challenge of performance, scalability, and developer experience at scale in Rails — this is the place. We also work extensively with React, TypeScript, and Node.js on the frontend and in supporting services.

Tech you'll work with: Ruby on Rails, React, TypeScript, Node.js, Kafka (streaming data infrastructure), and modern observability tooling.

Comp is competitive — IC principal roles range $198K–$273K base + equity. Engineering management roles start around $169K base + equity.

Austin office is downtown at 221 W 6th Street.

Apply here: https://careers.procore.com/jobs/search?page=1&query=&dropdo...

Found | San Francisco, NYC, REMOTE [CAN/US] | Engineering (EM and IC roles, platform and product teams), Data, Data infra, Product | found.com

We're building the next generation of financial tooling to help small business owners succeed. Our solution blends banking, bookkeeping, taxes and payments into an all-in-one solution to help save our users time, stress and money -- so they can focus on what matters to them; running their business.

https://found.com/careers , or you can reach me directly via jarred@

SWE Tech stack: Ruby on Rails (Kubernetes, GKE), React/Typescript, Capacitor, MySQL, Spanner

good luck finding new roles everyone, hacker-news-senpai. I am sure this year will hold many great and wonderful things.

Northstar Security | Software Engineer | SF Bay Area | Onsite | Full-time Northstar is a seed-stage cybersecurity startup building an agentic platform to help security teams understand and defend the complex environments they're responsible for. Our semantic layer integrates data from the fragmented security and IT tools that teams have to deal with and allows for an AI-native approach to reasoning over a company's security posture.

We're looking for someone with hands on experience building modern AI systems who wants to join an early startup (<5 engineers) and everything that comes with it: working closely with design partners, solving hard technical problems, working in a fast-paced environment and figuring out how to apply agentic AI in practical, novel ways.

I'm also looking for someone who's a scrappy ui engineer/designer hybrid - will want to see examples of interesting UIs you've built and how you're using AI to accelerate the design process.

Contact me if you're interested - Email is hidden

SIG | Multiple Positions | SYDNEY, AUSTRALIA | Visa Sponsorship for Experienced / PhD Candidates | On Site | https://sig.com

SIG is a global quantitative trading firm founded with an entrepreneurial mindset and a rigorous analytical approach to decision making. As one of the largest proprietary trading firms in the world we are experts in trading all listed financial products and asset classes handling millions of transactions on exchanges around the world every day.

SYDNEY

Quantitative Systematic Trader Quantitative Researcher C# Developer (Trading Systems, Post Trade Tech) C++, C#, Python Dev (Options Desk, Trading Systems, Pricing and Team Lead roles) SRE (Linux, non-cloud) AI Technical Analyst AI Senior Software Developer (C#, Java or Python, 8y+ exp) If you have not previously applied please send me your CV (email in the profile). We had few great YC hires already in the past. Contact number, visa/work rights, availability and a brief description of your current situation is useful to include.