Senior Full-Stack Developer

Milsoft Utility Solutions, Inc.; Abilene (TX); On-site; USD 110,000 - 160,000; Full time

Job summary

Milsoft Utility Solutions, Inc. is seeking a Senior Full-Stack Developer to bridge modern web UI with robust enterprise backend services for the utility industry.

You will own features across UI/UX, backend design, testing practices, and REST/SOAP service modernization, while evaluating cross-platform integration between Java and .NET environments. The ideal candidate has extensive experience with Spring Boot, Spring WS, React or Angular, and expertise in both REST APIs and SOAP.

Qualifications

• 7+ years of professional software development in an enterprise environment.
• 5+ years of enterprise Java experience using the Spring Framework (Spring Boot, Spring WS).
• 5+ years building modern web applications using HTML, CSS, JavaScript/TypeScript and frameworks such as React or Angular.
• Strong production experience with REST (JSON) APIs and legacy SOAP (XML/WSDL).
• Relational databases: SQL, data modeling and performance optimization.
• Cross-Platform familiarity with C# and .NET Core ASP.NET.

Responsibilities

• Frontend Architecture: design accessible, responsive, high-performance interfaces from mockups.
• Backend Services: develop and optimize Java services using Spring Boot and SOAP.
• System Integration & modernization: map migration paths across Java and .NET environments.
• Technical Leadership: mentor engineers, lead architectural reviews, enforce coding standards.
• Domain collaboration: translate business requirements into scalable solutions.

Skills

7+ years experience

5+ years Java (Spring)

React or Angular

REST/API & SOAP

SQL & data modeling

C# / .NET Core familiarity

Education

Bachelor’s degree in CS or related

Tools

Spring Boot

Spring WS

HTML/CSS/JS

React/Angular

Job description

JOB SUMMARY

We are seeking a Senior Full-Stack Developer with deep expertise in modern web technologies, strong experience in enterprise Java, and solid backend integration skills. In this role, you will bridge the gap between high-performance user interfaces and robust enterprise backend services supporting the utility industry. Our preferred candidate is expected to take ownership of features across key UI/UX development, backend design and development, our testing practices and frameworks, contributing to the maintenance and modernization of REST and legacy SOAP services, and assist in evaluating cross-platform integration paths across our Java and .NET enterprise systems.

KEY RESPONSIBILITIES

• Frontend Architecture: Design and build accessible, responsive, and high-performance user interfaces working from mockups.
• Backend Services: Develop, maintain, and optimize enterprise Java services utilizing Spring Boot (REST APIs) and Spring WS (legacy SOAP services).
• System Integration & Modernization: Analyze legacy data protocols and assist in mapping architectural migration paths across Java and .NET environments to ensure seamless system interoperability.
• Technical Leadership: Mentor mid-level and junior engineers, lead architectural reviews, enforce sustainable coding standards, and participate in comprehensive code reviews.
• Domain Collaboration: Consult with product managers, internal staff, and utility industry stakeholders to translate complex business requirements into scalable technical solutions.

QUALIFICATIONS

Required Technical Skills & Experience

• 7+ years of professional software development experience in an enterprise environment.
• 5+ years of enterprise Java experience using the Spring Framework (Spring Boot, Spring WS).
• 5+ years of experience building modern web applications using HTML, CSS, JavaScript/TypeScript and frameworks such as React or Angular.
• Strong production experience handling both modern REST (JSON) APIs and legacy SOAP (XML/WSDL) communication protocols.
• Relational Databases: Solid proficiency in database design, SQL, data modeling, and performance optimization.
• Cross-Platform Familiarity: Practical familiarity with C# and .NET Core / ASP.NET (ability to analyze existing Java services and conceptualize translation into a .NET environment).

Leadership & Core Competencies

• Self-Starter: A forward-thinking engineer who can dive into projects with limited direction and navigate evolving technology stacks.
• Modernization Mindset: Proven track record of guiding development teams through architectural shifts and legacy system modernization.
• Mentorship: Demonstrated willingness and experience mentoring junior and mid-level developers to support team growth.

Preferred Qualifications

• Education: Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, or a related technical discipline.
• Domain Experience: Background or familiarity with the needs and technical challenges of the Utility / Energy industry.
• Legacy Systems: Experience working with IBM i and DB2 systems is a strong plus.