Senior Full Stack Developer

TEKsystems•Jersey City, NJ

15d•$70 - $85•Onsite

About The Position

The Senior Full Stack Developer will own the technical direction of MCC-Field, a next-generation field application used by site operations, third-party contractors, and preventive maintenance teams across the company's EV charging network. The application supports field technicians as they audit, cycle-count, replace, and troubleshoot chargers in real-world conditions, including intermittent connectivity, gloved-hand device use, and shift-based operations. The role will guide the platform from R0 hardening through R3+ feature delivery, evolving a Progressive Web App with offline-first persistence and AWS serverless infrastructure using Lambda, API Gateway, DynamoDB, S3, and Cognito. The developer will partner with other development engineers and drive R1 API integrations with partner teams. The work emphasizes production-grade engineering practices, including dependency injection, property-based testing, offline synchronization with bounded retries and conflict detection, and CloudWatch observability. This is an individual-contributor position with technical leadership scope.

Requirements

Bachelor's degree in Engineering, Computer Science, Mathematics, or equivalent.
Demonstrated analytical and quantitative skills, including using data and metrics to support assumptions and develop technical designs.
Understanding of the full software development lifecycle.
Experience developing products for customer-facing end users.
At least 5 years of programming experience with TypeScript or Node.js.
At least 5 years of experience contributing to architecture and design of new and existing systems, including architecture, design patterns, reliability, and scaling.
Experience building serverless applications on AWS, including Lambda, API Gateway, DynamoDB, S3, and Cognito.

Nice To Haves

Experience leading a software team as a tech lead.
Experience with AWS, including AWS CDK for infrastructure as code.
Experience developing Progressive Web Apps with offline-first architecture, using Service Workers, IndexedDB, WatermelonDB, or equivalent.
Experience coaching and mentoring junior engineers or contract engineers.
Experience building scalable front-end infrastructure software or distributed systems for commercial online services.
Experience integrating external REST APIs and handling partial-availability failure modes.
Experience with mobile-device data capture such as barcode scanning, camera, or GPS, or with field-service tooling.
Experience with Amazon internal build and deployment tooling, such as Brazil, Apollo, and Pipelines.

Responsibilities

Own the technical direction of the MCC-Field platform from R0 hardening through R3+ feature delivery.
Guide the evolution of the PWA and its offline-first persistence architecture.
Drive R1 API integrations with partner teams.
Partner with other development engineers.
Build production-grade software using dependency injection, property-based testing, offline synchronization with bounded retries and conflict detection, and CloudWatch observability.