[Hiring] AI-Native Full Stack JavaScript Engineer @3HRsome

Role Description

We are looking for an AI-Native Full Stack JavaScript Engineer who enjoys building modern web applications while using AI as a core part of the software development workflow. This is not a traditional software engineering role. The ideal candidate already relies on tools such as Claude Code, Codex, or similar AI-assisted development environments and sees AI as an essential productivity multiplier. You'll help build next-generation financial research products powered by large language models and unstructured financial data.

Responsibilities

• Design and build full stack web applications using the JavaScript ecosystem
• Develop AI-powered features and workflows for financial research products
• Work with structured and unstructured financial data
• Collaborate closely with the CTO and product team
• Use AI coding assistants (Claude Code, Codex, or similar) as part of your daily development process
• Write clean, maintainable, and scalable code
• Contribute ideas to product and technical discussions

Qualifications

• Strong experience as a Full Stack JavaScript Engineer
• Experience building modern web applications
• Hands-on experience using AI coding tools such as:
• Claude Code
• Codex
• or equivalent AI-assisted development tools
• Excellent problem-solving skills
• Strong English communication skills
• Ability to work independently in a fully remote environment

Requirements

• Nice to Have:
• Experience working with Large Language Models (LLMs)
• Experience processing or working with large datasets
• Fintech or financial data experience
• Startup or high-growth company experience

Location

The company is remote-first. Preferred locations include:

• United Kingdom
• Spain
• Eastern Europe
• Exceptional candidates from elsewhere in Europe will also be considered.

Working Hours

The company values results over fixed working hours. While reasonable overlap with the team is expected, working hours are highly flexible. Engineers are trusted to manage their own schedules as long as they consistently deliver high-quality outcomes.

Compensation

• Highly competitive salary
• Flexible depending on experience and impact
• The company is willing to pay above market rates for exceptional candidates

Contract

• Full-time engagement
• Freelance/B2B contract preferred
• Flexible contract arrangements available depending on location
• The company treats long-term contractors as integral members of the team and offers flexibility around paid time off based on performance and mutual trust.

Interview Process

• Recruiter screening
• Technical interview with the CTO
• Final interviews (if applicable)
• Offer

Why Join?

• Build AI products used by professional investors and hedge funds
• Work directly with experienced technical leadership
• Remote-first culture with flexible working hours
• High level of autonomy and ownership
• Opportunity to work with modern AI development workflows from day one
• Small, high-performing team where your work has immediate impact