Application Guide

How to Apply for Full-Stack Engineer

at High Impact Athletes

🏢 About High Impact Athletes

High Impact Athletes is a mission-driven nonprofit that connects professional athletes with evidence-based charities, turning athletic influence into effective giving. Working here means your engineering directly amplifies donations to high-impact causes, not shareholder profits. The team is fully remote, globally distributed, and deeply values careful stewardship of donor money and data.

About This Role

As a Full-Stack Engineer, you'll own the end-to-end development of a fundraising platform that powers athlete pledges and donation flows. You'll build and maintain integrations with Raisely, Cloudflare Workers, Stripe, PayPal, and vendor APIs, while hardening systems through monitoring, testing, and documentation. Your work ensures that real donor money moves securely, accurately, and reliably to effective charities.

💡 A Day in the Life

You might start by reviewing a pull request for a new Stripe webhook handler, then pair with a product manager to scope a feature for athlete pledge tracking. After lunch, you'd debug a reconciliation worker issue using AI-assisted log analysis, then deploy a Cloudflare Worker update to improve donation checkout reliability. You'd end the day documenting the fix and planning tomorrow's integration work.

🚀 Application Tools

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Interview Prep

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🎯 Who High Impact Athletes Is Looking For

  • 4+ years of production software experience with strong fundamentals in at least one modern language (JavaScript/TypeScript, Python, Go, etc.) and comfort across the stack.
  • Proven ability to integrate third-party services using webhooks, OAuth, idempotency, and reconciliation—especially payment systems like Stripe or PayPal.
  • Habitual user of AI-assisted development tools (e.g., Copilot, ChatGPT) to accelerate coding, debugging, and learning unfamiliar codebases.
  • Mission-aligned and detail-oriented, with a careful approach to handling money and sensitive donor data; thrives in a remote, async environment with four-hour Melbourne overlap.

📝 Tips for Applying to High Impact Athletes

1

Highlight specific projects where you integrated payment gateways (Stripe, PayPal) and handled idempotency, webhooks, and reconciliation—these are core to the role.

2

Demonstrate familiarity with Cloudflare Workers or similar serverless/edge platforms; if you haven't used Workers, show how you've quickly learned comparable technologies.

3

Mention any experience with Raisely or nonprofit fundraising platforms, or explain how you'd ramp up on it fast.

4

Show your AI-assisted development workflow concretely: which tools you use, how they improve your speed/quality, and examples of shipping features faster.

5

Reference High Impact Athletes' mission and evidence-based giving in your application; connect your engineering values to their goal of maximizing charitable impact.

✉️ What to Emphasize in Your Cover Letter

['Your hands-on experience building and maintaining donation or payment flows with real money, including error handling and reconciliation.', 'Concrete examples of integrating multiple third-party APIs and services (Stripe, PayPal, webhooks, auth) in production.', 'How you use AI-assisted development as a daily habit to learn codebases and ship features efficiently.', 'Your motivation to work at a nonprofit focused on effective altruism and athlete-driven giving, and how you handle sensitive data with care.']

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🔍 Research Before Applying

To stand out, make sure you've researched:

  • → Explore High Impact Athletes' website to understand their model: how athletes pledge, which charities they support, and their evidence-based approach.
  • → Research Raisely (the fundraising platform) and Cloudflare Workers to understand the tech stack and potential integration challenges.
  • → Read about effective altruism and the charities HIA partners with; be ready to discuss why this mission resonates with you.
  • → Look up common patterns for idempotency and reconciliation in payment systems (e.g., Stripe docs) to speak fluently about handling money safely.
Visit High Impact Athletes's Website →

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Walk us through a time you integrated a payment provider like Stripe or PayPal. How did you ensure idempotency and handle webhook failures?
2 Describe your experience with Cloudflare Workers or similar edge/serverless platforms. How would you migrate or build a new integration on Workers?
3 How do you use AI-assisted development tools in your workflow? Give an example where it significantly sped up your work.
4 Tell us about a complex codebase you learned quickly. What was your approach, and how did you contribute?
5 How would you design monitoring and alerting for a donation checkout flow to catch issues before donors are affected?
Practice Interview Questions →

⚠️ Common Mistakes to Avoid

  • Treating this like any other for-profit full-stack role—failing to connect your work to the nonprofit mission and effective giving.
  • Overlooking the emphasis on AI-assisted development; not mentioning it or dismissing it as a novelty.
  • Ignoring the specific tech stack (Raisely, Cloudflare Workers, Stripe, PayPal) and giving generic full-stack examples without payment or integration depth.

📅 Application Timeline

This position is open until filled. However, we recommend applying as soon as possible as roles at mission-driven organizations tend to fill quickly.

Typical hiring timeline:

1

Application Review

1-2 weeks

2

Initial Screening

Phone call or written assessment

3

Interviews

1-2 rounds, usually virtual

✓

Offer

Congratulations!

Ready to Apply?

Good luck with your application to High Impact Athletes!

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