AI-Driven FinTech Full-Stack Engineer

Sptix AI LLP; United States; On-site; USD 110,000 - 160,000; Full time

Job summary

BJAK is seeking a Full Stack Engineer to build across frontend, backend, and APIs for a fintech platform. You will ship features for onboarding, payments, rewards, travel, FX, and risk, while creating scalable customer and internal workflows and automating processes.

You will collaborate closely with product, design, mobile, backend, and AI teams to deliver reliable systems with strong UX and robust backend logic.

Qualifications

• Experience shipping full product features across frontend, backend, APIs, and databases.
• Strong frontend experience with modern stacks (React/Next.js/Vue).
• Solid backend fundamentals including data models, APIs, and authentication.
• Ability to work fast with ambiguity and own outcomes end-to-end.
• Customer-focused with good product sense.

Responsibilities

• Build full product features across frontend, backend, APIs, and databases.
• Create onboarding, accounts, payments, rewards, travel, FX, KYC, and risk workflows.
• Turn ambiguous problems into reliable systems with clean UX and backend logic.
• Collaborate with product, design, mobile, backend, and AI engineers to launch and improve releases.
• Build internal tools and automation to reduce manual work.
• Own your work beyond release: monitor, debug, learn, and improve.

Skills

Full stack engineering

Frontend and backend

React

Next.js

Vue

API design

Production debugging

Tools

Databases

Job description

BJAK is seeking a Full Stack Engineer to build across frontend, backend, and APIs for a fintech platform. You will ship features for onboarding, payments, rewards, travel, FX, and risk, while creating scalable customer and internal workflows and automating processes.

You will collaborate closely with product, design, mobile, backend, and AI teams to deliver reliable systems with strong UX and robust backend logic.