Founding Engineer (Warsaw, full-time, in-office)

Elastics is building an AI-native operating system for trading - deterministic agents, live data, portfolio management and execution across prediction markets, crypto, and beyond. We are Pre-Seed funded, working with our first clients, and need a Founding Engineer to accelerate building core product infrastructure.

Responsibilities:

- Build and own our agent orchestration & runtime engine (async, distributed systems)

- Deploy and scale services on Azure (Docker, CI/CD, monitoring)

- Connect to exchanges and data sources (API/websocket integration, streaming)

- Implement portfolio and risk calculations (PnL, positions, Greeks, risk metrics) Implement market discovery dashboards on our platform

Requirements: 5+ years of backend experience (Python, distributed systems, financial data pipelines) Comfort with Docker, Redis/Kafka, PostgreSQL Strong C++ experience Interest in financial markets and trading Startup mindset: you can ship, own, and iterate fast Warsaw-based (in-office) or willing to relocate Fluency in English - our work and clients are international Bachelor's or Master's degree in Computer Science, Mathematics, or a related field

Offer: $5,000/month starting salary (B2B) + meaningful equity (true founding role) Work at the forefront of financial and AI innovation Work directly with experienced math, quant and product founders Exposure to top global hedge funds, exchanges and VCs

Send your resume to Email is hidden with "HN who’s hiring" in the title

Delight | Full Stack Engineer | Onsite (Austin, TX, 3 days/week) | Full-time | https://delightapp.io

Delight is an AI-first customer orchestration platform for field service businesses — electricians, HVAC techs, solar installers, and more. We help them grow revenue and deliver great customer experiences with modern, easy-to-use tools.

We’re led by repeat founders (CEO sold an AI startup; CTO was a tech lead on React) and hiring our first engineer to help build our core platform and shape company culture.

Stack: Python, TypeScript, AWS, Docker, serverless.

If you’ve thrived in 0→1 environments and want to build at the intersection of AI and small business, we’d love to chat.

Apply at careers.delightapp.io or email Email is hidden

janitorAI | San Francisco, CA | ONSITE | Full-time We're one of the largest consumer AI websites in the world, and are building the AI-native entertainment platform of the future.

We're hiring for a range of roles, especially for backend/infra (more details here: https://about.janitorai.com/backend-infrastructure-engineer/).

If you want to work on an incredibly fast-growing consumer product and help build for scale, shoot me an email at hugo at janitorai dot com

Avtal | Austin, TX | ONSITE | Full-time

Avtal is a fast-growing company in the digital debt collections space, building systems that make agency–consumer interactions more transparent and data-driven. The engineering team works across Go, React, PostgreSQL (RDS), and AWS, solving problems around large-scale data pipelines, workflow automation, and platform reliability.

Open roles:

Full-Stack Engineer – React / Go

Backend Engineer – Go / Python (ML experience a plus)

Platform / DevOps Engineer – AWS / Linux / IaC

DBA – PostgreSQL / RDS performance & tuning

If any of this sounds interesting, email me at rachith at avtal dot com

Opendoor (https://www.opendoor.com) | San Francisco, CA | Full-time We're hiring engineers across the stack at Opendoor. We're building technology to simplify residential real estate - making it easier to buy and sell homes. Our engineering challenges span everything from marketplace dynamics and pricing models to complex operational workflows and integrations with industry systems. If you're interested in applying technology to modernize a massive, traditional industry, we'd love to hear from you.

yan at [our domain].com :D

Rootly | AI-native on-call & incident response (Slack/Teams) | Remote (US/Canada/Europe)

We help engineering teams resolve incidents faster—from first alert to retrospective—used by 1000+ customers like NVIDIA, Glean, Mistral, Figma, LinkedIn, Dropbox, Replit, Grammarly, Cisco and many more.

Hiring

* Senior Software Engineer (Backend/Rails)

* Senior Site Reliability Engineer

* Security Engineer

* QA Engineer

* Senior Solutions Engineer

* Staff Product Designer

* Product Marketing Manager

* Enterprise Account Executive

* Developer Relations & Community Manager

* Product Engineer Co-op

Why Rootly: A passionate team building modern incident tooling that teams actually love; real adoption at scale; lots of ownership and impact. See roles + details: https://rootly.com/careers

Songscription | Founding Engineer, Mobile App Developer & More | San Francisco, CA

At Songscription, we are building state-of-the-art AI models to automate music transcription, with the vision of enabling any musician to learn any song, on any instrument, at any level.

Apply at https://songscription.ai/careers and/or feel free to shoot me an email at Email is hidden if you have any questions or want to learn more.

Trak | Product Manager | Full Time | Hybrid NYC

Trak is revolutionizing the collision repair and ADAS calibration industry by building the first AI-driven calibration and compliance platform designed specifically for collision centers, ADAS calibration companies, and the technicians who power them. We are creating the operating platform of record for an industry that has been underserved by technology, enabling shops to automate calibration mapping, documentation, and compliance workflows at scale. By leveraging proprietary datasets and machine intelligence, we are transforming fragmented, manual processes into seamless, data-driven operations. Backed by leading venture investors and scaling aggressively, this is your opportunity to help build the platform that will define the future of automotive repair and calibration.

We are actively hiring for a Product Manager, for more information please see https://adastrak.com/careers. Send resumes and questions to Email is hidden

ShiftUp | Staff Software Engineer | Remote | https://shiftupai.com

Hiring for a full-time, 100% remote role (entire company is remote) for a Staff Software Engineer, working on the ShiftUp platform stack (Python, Pydantic AI, GCP, Temporal Workflows, Turbopuffer, Postgres). You will be one of the first five engineering hires, and you will have the ability to grow and shape your own role.

We need someone with solid experience designing and implementing systems with many moving parts, who can easily shift between systems design, writing and reviewing code (or, let's face it, supervising Codex/Cursor/Claude Code), working with the team to design features, and talking to customers to gain feedback and insights.

You'll be working to build all kinds of agents, workflows, and other components to support our features. Our research agents are truly deep, sometimes spending upwards of an hour searching and analyzing information for a single prospect or strategy. Our RAG pipeline is focused on quality, leveraging LLM chunking, metadata and graph generation, and contextual embeddings.

If this sounds like fun, let's chat: you won't be asked to regurgitate leetcode solutions, we'll simply have a conversation and see if there's a mutual fit. Our interview process is lightweight, respectful and moves fast. Competitive salary, equity and full benefits.

You can email me directly: Email is hidden

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About the company: ShiftUp is a new kind of intelligence-driven sales platform that identifies emerging demand and drives revenue. Built from scratch to leverage LLM-driven agentic workflows, ShiftUp deeply researches prospects, identifies the highest-value opportunities, and provides targeted sales strategies to execute on them.

ShiftUp is delivered as a native app on Salesforce AppExchange, providing our platform to sellers where they already are. Our Salesforce app talks to a cloud-native stack that uses Python services, durable workflows, and SQL + vector databases.

We're well-funded, having recently closed a $3M seed round. We're building out a small team of highly talented, well-rounded engineers to deliver on our vision. Our company is 100% remote, and we use SoWork to help build our culture. As a small startup, everyone is highly motivated and focused on moving quickly, but we also place importance on a sustainable work-life balance so that you can continue to do your best work.

Flint | Multiple positions | San Francisco, CA

Flint is the autonomous website platform. We're backed by Sheryl Sandberg and Accel. Early stage startup with alums from Warp, Nuro, Vooma, Scale, Shepherd, and Carrot.

Hiring software engineers and a Chief of Staff: https://flintai.notion.site/jobs-board-1a18be5fbfd680fd9501f...