Senior Software Engineer

Our client is seeking a skilled Software Engineer to join a strategic application modernization initiative focused on rewriting and migrating a critical enterprise platform. This role will be responsible for analyzing existing application functionality, redesigning services for scalability and performance, and developing cloud‑ready, maintainable solutions. Core Responsibilities Analyze existing Node.js applications, MongoDB collections, APIs, and business workflows to develop migration and modernization strategies. Design, develop, and implement scalable backend services and APIs using Golang. Translate document-based MongoDB data models into optimized relational schemas within PostgreSQL. Participate in application re‑architecture efforts, including service decomposition, domain modeling, and modernization best practices. Develop data migration frameworks, ETL processes, and validation strategies to ensure data integrity throughout migration activities. Refactor or rewrite existing business logic while maintaining feature parity and improving performance, reliability, and maintainability. Build and maintain RESTful and/or gRPC APIs to support application functionality and integrations. Required Skills/Experience (Must-Haves) 5+ years of professional software engineering experience developing backend applications. 2+ years of hands‑on experience developing applications using Golang. Strong experience with Node.js application architecture and development. Proven experience designing and developing applications using PostgreSQL, including schema design, indexing, query optimization, and performance tuning. Experience working with MongoDB data models, aggregation pipelines, and document‑based database architectures. Experience participating in application modernization, migration, or large‑scale refactoring initiatives. Strong understanding of distributed systems, microservices architecture, and API design principles. Strong understanding of CI/CD concepts and best practices. Preferred Skills/Experience (Nice-to-Haves) Experience with AWS. Experience migrating and rewriting a codebase from Node to Golang. Experience writing UI and frontend code using React. Hybrid Pay Range: The approximate pay range for this position is between $120,000 and $135,000 . Please note that the pay range provided is a good faith estimate. Final compensation may vary based on factors including but not limited to background, knowledge, skills, and location. We comply with local wage minimums. Employee Stock Ownership Plan 401K offered #J-18808-Ljbffr KellyMitchell Group