Senior Full-Stack Engineer (Kotlin/React) AI-Driven Fintech

N-iX; Town of Poland (NY); Hybrid; USD 100,000 - 180,000; Full time

Benefits offered by this job

Flexible working format

Competitive salary

Career growth

Education reimbursement

Tech talks & trainings

Team events

Job summary

N-iX, a global software development partner, seeks a Senior Full-Stack Engineer to work across Kotlin backend and React/TypeScript frontend. You will balance front-end and back-end depth and move between layers to unblock delivery in a fast-paced fintech environment.

You'll collaborate in AWS-based infra, contribute to AI-native delivery practices, and embed in client squads as an individual contributor. Flexible remote/office options and strong career growth await.

Qualifications

• Must have Kotlin backend and React/TypeScript frontend experience.
• Experience applying AI-native delivery practices across the CDLC.
• Clear leaning toward frontend or backend depth with ability to move across stack layers.
• Experience with AWS.
• Evidence of building/operating tooling (agent & harness).

Responsibilities

• Deliver across the Kotlin backend and React/TypeScript frontend.
• Move fluidly between stack layers to unblock delivery.
• Apply AI-native delivery practices across the CDLC.
• Multiply output and quality of the squad and share patterns widely.
• Embed directly into a client squad as an hands-on Individual Contributor.

Skills

Kotlin (backend)

React/TypeScript (frontend)

AI-native delivery

Frontend/backend depth

AWS

Tooling & harnessing

Tools

PostgreSQL

Job description

N-iX, a global software development partner, seeks a Senior Full-Stack Engineer to work across Kotlin backend and React/TypeScript frontend. You will balance front-end and back-end depth and move between layers to unblock delivery in a fast-paced fintech environment.

You'll collaborate in AWS-based infra, contribute to AI-native delivery practices, and embed in client squads as an individual contributor. Flexible remote/office options and strong career growth await.