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NineTwoThree AI StudioNS

Senior Full Stack JS Engineer

NineTwoThree is a premier software studio focused on AI solutions, serving established brands and startups since 2012.

NineTwoThree AI Studio

Employee count: 51-200

Ukraine only

Why Join Us?

πŸ”Ή 100% remote | 🌎 Global team | ⏳ Full-time

Join a stable, long-term project that's been in continuous development for 5+ years. The project offers consistent, meaningful work on a mature financial services platform.

Project overview:
It is a comprehensive financial services platform built for an established insurance and financial services company. The platform handles:

  • Insurance products (motor, life, property, major medical)
  • Loan management (vehicle, personal, mortgage, commercial)

- Investment and annuity products

  • Digital client services and employee benefits
  • Real-time financial transactions and reporting

- AI document processing

This is a production system processing real transactions for real customers, with established business processes and regulatory compliance requirements.

Why This Position is Different?

βœ… Stable, Long-term Project: Same project for 5+ years, deep domain expertise

βœ… Mature Codebase: Well-structured, documented, with established patterns

βœ… Real Business Impact: Your code affects real financial transactions and client services

βœ… Technical Variety: Polyglot architecture (Node.js + Python/Django), multiple services

βœ… Professional Growth: Become an expert in financial services technology


What You'll Do:

Work on a mature financial platform with real business requirements:

  • Maintain and enhance banking/lending features, payment processing, and compliance workflows
  • Work across our polyglot microservices architecture (Node.js/TypeScript and Python/Django)
  • Implement complex business logic for insurance products, loan origination, and investment services
  • Build real-time data processing systems using WebSockets and event-driven patterns
  • Integrate with third-party services (DocuSign, payment gateways, banking APIs)
  • Full-stack development from REST APIs to React frontends
  • Ensure transaction integrity and regulatory compliance
  • Collaborate with a stable team that knows the domain deeply

Requirements

Technical Requirements:

  • 5+ years Full Stack development with both Node.js/TypeScript AND Python/Django
  • Strong React.js, Redux, and modern frontend development
  • PostgreSQL expertise including complex queries, transactions, migrations
  • Experience with both Knex/Objection.js (Node) and Django ORM

- Microservices architecture experience

  • Real-time systems (WebSockets, Socket.io, Celery)

- AWS and Docker experience

  • RESTful API design with JWT/OAuth authentication
  • Testing frameworks (Jest for Node.js, pytest for Python)
  • Financial or insurance systems experience is a plus

- Strong English communication (B2-C1)

  • Overlap with Eastern USA timezone for meetings

Tech Stack

Backend:

  • Node.js/TypeScript: Koa.js, Objection.js, Knex.js
  • Python: Django 4.2+, Django REST Framework, Celery

- PostgreSQL, Redis

Frontend:

- React, Redux, Material-UI

- TypeScript, Vite

- Formik, Yup validation

Infrastructure:

- AWS (S3, EC2, RDS)

- Docker, PM2, Gunicorn

- Socket.io, WebSockets

- DocuSign, Payment APIs

- Jest, Supertest, pytest

- Swagger/OpenAPI

Benefits

What We Offer

  • Long-term stable position on established project

- 20 days PTO (25 after 3 years)

  • 10 sick days, national holidays, 2 company days

- Well-being budget

- Maternity/paternity leave

- Professional development reimbursement

- Hardware as needed

- Stable, professional team environment

Process

Quick and efficient: HR screening β†’ Technical discussion β†’ Practical coding session β†’ Offer

Apply now for a stable, long-term position on an established financial services platform.

About the job

Apply before

Posted on

Job type

Full Time

Experience level

Senior

Location requirements

Hiring timezones

Ukraine +/- 0 hours

About NineTwoThree AI Studio

Learn more about NineTwoThree AI Studio and their company culture.

View company profile

NineTwoThree is a leading software design, engineering, and marketing studio that specializes in building custom artificial intelligence (AI) solutions for established brands and funded startups. Our mission is to help clients maximize their investment in technology by driving positive ROI and scalability through innovative AI-driven applications. Since our inception in 2012, we have partnered with various distinguished customers, launching over 150 products and several internal startups.

Our expertise encompasses a myriad of domains including conversational AI, generative AI, and classic machine learning, enabling us to tackle the unique challenges that businesses face today. At NineTwoThree, we pride ourselves on our ability to deliver consistent and reliable results, underpinned by a virtuous cycle of feedback, learning, and improvement. Our experienced team is dedicated to fostering long-term relationships with clients, ensuring that every project benefits from a stable and proven workforce with an impressive 90% talent retention rate. NineTwoThree has been recognized multiple times as a top AI agency in the U.S. and continues to break ground in mobile app development, creating engaging and user-friendly solutions that cater to diverse audiences.

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NineTwoThree AI Studio

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