[Remote] Staff Engineer - .NET & Cobol (100% Remote)

Note: The job is a remote job and is open to candidates in USA. The TJX Companies, Inc. is a global IT organization that fosters an inclusive culture and growth opportunities. They are seeking a motivated and experienced Staff Engineer with deep knowledge of Microsoft .NET and COBOL to design and implement business functionality, while supporting technical strategy and collaborating effectively with teams.

Responsibilities

• Experience of authoring functional/technical designs documents including performance, security and availability considerations
• Proven experience of developing new features and services that are medium to high level of complexity working with the Product, Platform, Infrastructure and Security teams
• Proven ability to design, code, test, deploy & support working software/technology components, working collaboratively with architects and other engineers
• Experience in delivering clean, secure, performant code / technology components that meets all non-functional requirements
• Experience in leading discussions on design approaches to solving highly visible, strategic and complex business problems
• Experience in establishing development process definitions, best practices and standards
• Experience identifying emerging technologies for consideration for new technology direction and implementing proof of concepts to prove the new technology
• Proven ability to create Threat Model, Architecture, Estimates, Design, Code, and deliver for the required business feature
• Experience of acting in a Lead Engineer capacity for medium to large initiatives, prioritizing and assigning tasks, providing guidance and resolving issues
• Proven ability to mentor more junior engineers across the technical domains/enterprise

Skills

• 10+ years of hands‑on software development experience focused on the Microsoft .NET ecosystem (C#, .NET Framework, .NET Core)
• Recent experience analyzing and interpreting Mainframe code such as COBOL, JCL, VSAM and DB for z/OS schemas
• Current experience extracting and transforming data from Mainframe DB2 and IMS
• Extensive experience designing, developing, and optimizing SQL Server databases, including complex queries, stored procedures, indexing strategies, and performance tuning
• Ability to work with mainframe SMEs to reverse-engineer logic and map it into modern .NET domain models
• Hands-on experience designing and building data extraction pipelines from mainframe systems into modern platforms (SQL, cloud storage, APIs, microservices)
• Experience working on large-scale data migration or system modernization projects
• Proven track record delivering high‑quality, scalable, secure, and maintainable applications across medium to large projects
• Strong understanding of application architecture principles, API design, and modern development practices such as dependency injection, CI/CD, unit testing, and code quality standards
• Experience collaborating closely with Product, Platform, Infrastructure, and Security teams to design and implement end‑to‑end technical solutions
• Ability to lead technical discussions, provide architectural input, and solve complex, highly visible business problems
• Demonstrated experience mentoring junior developers and contributing to engineering best practices, standards, and development processes
• Experience of authoring functional/technical designs documents including performance, security and availability considerations
• Proven experience of developing new features and services that are medium to high level of complexity working with the Product, Platform, Infrastructure and Security teams
• Proven ability to design, code, test, deploy & support working software/technology components, working collaboratively with architects and other engineers
• Experience in delivering clean, secure, performant code / technology components that meets all non-functional requirements
• Experience in leading discussions on design approaches to solving highly visible, strategic and complex business problems
• Experience in establishing development process definitions, best practices and standards
• Experience identifying emerging technologies for consideration for new technology direction and implementing proof of concepts to prove the new technology
• Proven ability to create Threat Model, Architecture, Estimates, Design, Code, and deliver for the required business feature
• Experience of acting in a Lead Engineer capacity for medium to large initiatives, prioritizing and assigning tasks, providing guidance and resolving issues
• Proven ability to mentor more junior engineers across the technical domains/enterprise
• Experience with cloud platforms (Azure preferred), including App Services, Functions, Key Vault, APIM, and cloud‑native design patterns
• Familiarity with modern frontend technologies (e.g., Angular, or Blazor)
• Experience with Entity Framework, LINQ, microservices architectures
• Extensive experience with SQL Server Integration Services (SSIS), including designing, optimizing, and supporting complex ETL processes, data workflows, and integration of pipelines
• Experience with tools such as Git, Azure DevOps, SonarQube, or similar development and DevSecOps tools
• Experience with performance profiling, debugging, and monitoring .NET and SQL Server applications in production environments
• Knowledge of the automation tools (e.g. REXX, Python) is preferable
• Experience mentoring engineers of varying levels, elevating engineering maturity, shaping development processes, and championing best‑in‑class development practices (CI/CD, testing strategies, code quality)

Benefits

• This position is eligible for an annual incentive as well as long-term incentives.

Company Overview

Company H1B Sponsorship