\\\W2 Opportunity only!

No C2C and GC/USC Candidates only

Software Engineer (Java / .NET) – Onsite

Locations:

Berkeley Heights, NJ | Greenwood Village, CO | Omaha, NE

Type:

1-Year+ Contract

\\*\*W2 Opportunity only!

No C2C and GC/USC Candidates only

Overview

We are seeking an experienced Software Engineer with a strong background in Java development and prior hands-on experience in .NET/C#. This role will initially focus on supporting legacy applications within the EFTPS ecosystem, with a planned transition into modernization efforts over the next 1.5–2 years.

The ideal candidate is a current Java developer who has previously worked in .NET environments and is passionate about mentoring junior engineers while contributing to evolving system architecture.

Key Responsibilities

Provide production support and maintenance for legacy EFTPS applications and platforms
Troubleshoot, debug, and resolve application issues to ensure system stability and performance
Collaborate with cross-functional teams to support ongoing enhancements and upgrades
Contribute to future modernization initiatives, including transitioning systems to .NET/C#
Write and optimize SQL queries for data access and performance tuning
Mentor and guide junior developers, promoting best practices and knowledge sharing
Participate in code reviews, design discussions, and continuous improvement efforts

Required Qualifications (Non-Negotiable)

6+ years of professional software development experience
Strong current experience with

Java

Prior hands-on experience with

.NET and C#

Solid experience with

SQL and database development

Proven ability to mentor and support junior developers
Experience supporting or maintaining legacy systems

Preferred Qualifications

Experience working in financial systems or payment processing environments
Exposure to system modernization, migration, or transformation initiatives
Strong problem-solving skills and ability to work in a production support environment

Software Engineer (Java & .Net)

Job description