Ask HN: Who is hiring? (March 2026)

Return | REMOTE | Senior Ruby/Rails developer (remote within EU) | Full-time (or 4 days)

Return (https://return.energy) is hiring a software engineer who will work on platforms that accelerate the transition to carbon-free energy. Return’s main activity is building and operating industrial-size Battery Energy Storage Systems. Our operations are located in the Netherlands, Germany, Belgium, and Spain. You will be making a measurable (country-level) impact on the transition to renewable energy. Return recently raised €300M to support its growth.

While we employ over 100 people, Return’s technical team is still small (15 people). Our platform automates processes in energy storage, monitoring, market optimization, sales, project management, procurement, construction, and customer service.

During the first three years of operation, we laid the foundation for our platforms, and we are ready to scale up. This is why we are looking for an experienced software engineer.

You will be working on internal tools that support our business departments (origination, development, construction, operation, and general). Our tech stack is straightforward: Postgres, Ruby on Rails 8, Turbo, Stimulus, and Tailwind. We tend to keep meetings to a minimum in order to provide at least five hours of uninterrupted coding time per day. We practice code reviews and apply automated and manual testing. The platform is often deployed multiple times per day.

We’re very much open to remote work as long as you live in the EU. Our hiring process is swift but thorough: a 30-minute call to get acquainted and discuss financials, one or more technical interviews, and a paid visit to Amsterdam to meet the team.

The tech team members have co-founded several companies and have experience with remote development teams since 2008. They will personally help you through most of the recruiting process (there is no recruiter involved).

Apply here: https://jobs.polymer.co/return/39294 (EU residents ONLY)

Your company is quite interesting for me, i made a demo for this project, visible at https://jasperblank.com/hearo/

Loop Financial| Senior Frontend Engineer, Senior Backend Engineer | Toronto (In-office) | Full-time

Loop is a fintech/payments company based in Toronto, building the infrastructure that moves money and we're growing the engineering team that makes it happen.

Hiring:

*Senior Frontend Engineer* - You'll own the user-facing product experience. Strong React skills, high craft bar, comfortable working close to the product.

*Senior Backend Engineer* - You'll work on the core payments platform. We care about reliability, scale, and engineers who think deeply about systems.

Apply: https://www.bankonloop.com/en-ca/careers

Hey! We're hiring for a Founding GTM Lead at Skyfall AI.

We are an AI research lab developing Enterprise Foundational Models (EWMs) that can understand, simulate, and act across complex enterprise systems.

And no, this is not the first time we are taking a different approach or building a company from the ground up. Skyfall was founded by the original Maluuba team, pioneers of the deep learning revolution who worked closely with leaders such as Yoshua Bengio and Richard Sutton before Maluuba’s $160M acquisition by Microsoft, where it became Microsoft’s AI research center in Canada.

We are building the next foundation layer for enterprise AI.

Please note, there is no playbook. This is a 0-1 role.

Apply here if you're interested: https://zrec.ca/uMnqA?source=CareerSite

Breezy | AI Product Engineer (Mid–Senior) | Remote (US) | Full-time | $120k–150k + Equity | https://www.getbreezyapp.com

Breezy builds modern field service software for residential HVAC companies. The industry still runs on legacy systems like ServiceTitan and Housecall Pro. We’re replacing them with a modern platform that combines strong product design, practical automation, and applied AI.

We’re a small, senior team building quickly with real customers. We value engineers who like owning problems end-to-end and shipping thoughtful software.

We’re hiring an AI Product Engineer to help build new product capabilities across the platform. You’ll work across the stack (TypeScript, React, Node.js, PostgreSQL) and contribute to features that incorporate LLMs and automation where they meaningfully improve the product.

Engineers on our team regularly use modern development tools such as Claude Code, Codex, and Cursor as part of their workflow.

This role is well suited for engineers who enjoy building real products, working across the stack, and having meaningful ownership in an early-stage startup.

What we’re looking for • Strong full-stack engineering skills • Comfort working with LLMs and AI-assisted development tools • Product-minded engineers who like shipping quickly • Builders who want large ownership and impact in a small team

Tech stack: TypeScript, React, Node.js, PostgreSQL, Kubernetes, AWS Comp: $120k–150k + equity, health benefits, 401(k), remote-first with periodic team offsites

To apply: Email jobs+mar26@getbreezyapp.com with your resume and links to your work (GitHub, LinkedIn, personal projects).