Platform Full Stack

Senior Software Engineer – Full Stack This organization is a global communications solutions provider offering a comprehensive suite of fully managed services focused on secure connectivity, networking, and mobility. It supports businesses and government agencies by simplifying communications and network operations. Its customers include many Fortune 500 companies, and it is recognized as an industry leader. With a broad technology portfolio, integrated partnerships, and a private network, it delivers tailored solutions across design, deployment, and ongoing management — driving cost savings, efficiency, innovation, and enabling clients to focus on core objectives. The team believes every member contributes to long‑term success. The work environment encourages professional growth, skill development, collaboration, knowledge sharing, and a rewarding career experience. The organization is seeking a Senior Software Engineer – Full Stack to join a new platform modernization team in NYC. The platform is a mission‑critical operations system deeply embedded in how internal teams and customers operate. This role leads the modernization of the platform’s technology stack — migrating core components to modern frameworks, retiring legacy patterns, and building the foundational services that will power the next generation of the platform. You will also build new core services and customer‑facing features on the modernized stack, contributing full‑stack depth to the AI‑driven portal and broader engineering initiatives. You will collaborate closely with senior architectural leadership and use AI‑assisted engineering tools as a core part of your workflow. Role and Responsibilities Tech Stack Modernization Drive modernization of the platform’s core components, transitioning to modern frameworks, removing legacy patterns, and establishing the architectural foundations for future development. Architecture & Design Partner with senior architects on major design decisions. Write ADRs, evaluate frameworks and infrastructure options, and contribute to platform‑wide architectural discussions. Full‑Stack Development Design, build, and ship new core services and customer‑facing features across backend, API, and data layers on the modernized stack. Cross‑Track Capacity Work flexibly across multiple engineering tracks, providing additional depth where needed. Ramp quickly in unfamiliar parts of the codebase. Cloud & DevOps Build and operate services on containerized infrastructure (Kubernetes on‑premise). Follow CI/CD, IaC, and deployment patterns established by the team. Code Quality & Mentorship Conduct code reviews, write maintainable and well‑tested code, uphold high engineering standards, and mentor junior and mid‑level engineers. Desired Qualifications Strong full‑stack engineering fundamentals and ability to work effectively with AI‑assisted tooling 7+ years of professional software engineering experience, including production full‑stack applications Proficiency in at least two modern programming languages; TypeScript/JavaScript (Node.js) preferred Solid React + TypeScript experience building complex, data‑driven web applications Production experience with modern backend frameworks (e.g., NestJS, FastAPI) Hands‑on experience with microservices and event‑driven architectures, including Kafka and Redis Relational database experience and ORM proficiency; familiarity with MSSQL is a plus Experience with containerized deployment (Kubernetes, Docker) and CI/CD pipelines Familiarity with cloud platforms (AWS, Azure, GCP) Ability to understand and modernize legacy systems Proficiency with AI‑assisted development tools (Claude Code, Copilot, Cursor, etc.) Strong communication skills for both technical and non‑technical audiences