Senior Backend Engineer - Python/TypeScript | Hybrid

DeWinter Group; Boston (MA); Hybrid; USD 140,000 - 190,000; Full time

Job summary

DeWinter Fin Tech Partner is building a greenfield, customer-facing platform. This is a hands-on senior engineering role on a small team with startup ownership, operating within Fidelity-scale standards. Mostly remote with occasional visits to Boston/RI/NH offices.

You will design APIs, build scalable microservices, and connect blockchain data sources to enterprise-grade insurance analytics using Python, TypeScript, and Node.js on AWS.

Qualifications

• 5+ years of backend experience in Python/TypeScript/Node.js.
• Strong AWS knowledge.
• Experience designing APIs and data pipelines.
• Familiarity with blockchain/crypto technologies.
• Comfortable in fast-paced startup environments.
• Able to work mostly remotely with occasional on-site visits.

Responsibilities

• Architect and implement backend services and APIs using Python, TypeScript, and Node.js.
• Design and scale data ingestion pipelines for blockchain datasets.
• Build reliable, secure systems on AWS (Lambda, ECS/Fargate, DynamoDB, API Gateway).
• Collaborate with data engineers and product leads to define data schemas and platform integrations.
• Set technical direction and best practices for performance, testing, and observability.
• Contribute to early product decisions, feature prioritization, and roadmap shaping.

Skills

TypeScript

Node.js

Python

APIs design

Data pipelines

Cloud architecture

Crypto blockchain

Observability/testing

Tools

AWS

Lambda

ECS/Fargate

DynamoDB

API Gateway

Job description

DeWinter Fin Tech Partner is building a greenfield, customer-facing platform. This is a hands-on senior engineering role on a small team with startup ownership, operating within Fidelity-scale standards. Mostly remote with occasional visits to Boston/RI/NH offices.

You will design APIs, build scalable microservices, and connect blockchain data sources to enterprise-grade insurance analytics using Python, TypeScript, and Node.js on AWS.