Jennifer Stack
Staff Engineer at Stripe - 12 years in fintech
About
I've been building software for 15 years, the last 12 in fintech. Currently a Staff Engineer at Stripe, previously tech lead at Square. I've architected systems that process billions of dollars and mentored dozens of engineers at all levels. In code reviews and portfolio sessions, I focus on architecture, code quality, and engineering fundamentals. I'll help you level up technically and think about systems at scale.
Notable Credits
Staff Engineer at Stripe. Previously tech lead at Square. Architected payment systems processing billions annually. Open source contributor.
What to Expect
Verified professional
GitHub profile and contributions verified.
Secure payment
Payment held in escrow until feedback is delivered.
Platform messaging
All communication happens through ProsDirect. Ask follow-up questions in the thread.
Code Review
Delivered within 5 days
Code and architecture review covering quality, structure, performance, security, and tests.
Book Written Notes60 min
Live technical review of a repo, architecture decision, or implementation plan.
Book Live CallCustom Tech Feedback
Delivered within 5 days
Custom feedback scoped to your project, with either a file upload or a private link.
Book Written Notes60 min
Live custom feedback session for work that does not fit a preset offering.
Book Live CallTech Portfolio
Delivered within 5 days
Portfolio, GitHub, and project presentation review for technical credibility.
Book Written NotesPayment held in escrow, released only after feedback is delivered and confirmed.