Fortran Modernization Engineer

Description
We're working on a legacy modernization project where Fortran and C are heavily used. The goal is to migrate it into C#. We're building a set of technical solutions to speed up and streamline the transition.

Requirements
We are seeking a specialized developer to participate in a critical legacy modernization project. Your primary goal is to analyze, document, and support the migration of legacy algorithms from Fortran and C into a modern C# .NET environment. This role requires a "software archaeologist" mindset – you must be able to understand complex scientific/mathematical logic written decades ago and preserve its integrity in a modern architecture.

Must-Have Qualifications
Fortran Proficiency: Deep experience reading and writing Fortran (versions 77 through 95). You must understand common legacy patterns (COMMON blocks, EQUIVALENCE statements, fixed-format source).

Some C# / .NET Expertise (or another oop/modern programming language)

C Language Knowledge: Ability to read and navigate C code, particularly where it interfaces with Fortran.

Refactoring Experience: Proven track record of working on code migration or modernization projects.

Nice-to-Have

Experience with mathematical or scientific computing libraries

Familiarity with Fortran-to-C interoperability

Job responsibilities

Analyze & Reverse Engineer: Deeply review existing legacy codebases (Fortran 77/90/95 and C) to understand the underlying business logic and mathematical models.

Code Migration: Support C# developers in porting functions, subroutines, and data structures from Fortran/C to clean, idiomatic C#.

Validation & Testing: Support creation of distinct unit tests to ensure "bit-exact" or functionally equivalent outputs between the legacy executables and the new C# solution.

Interop Management: Temporarily manage P/Invoke or C++/CLI wrappers if a phased migration strategy is required.

Documentation: Document the logic of undocumented legacy modules for future maintainability.

What we offer

Culture of caring.
At GlobalLogic, we prioritize a culture of caring. Across every region and department, at every level, we consistently put people first. From day one, you'll experience an inclusive culture of acceptance and belonging, where you'll have the chance to build meaningful connections with collaborative teammates, supportive managers, and compassionate leaders.

Learning and development.
We are committed to your continuous learning and development. You'll learn and grow daily in an environment with many opportunities to try new things, sharpen your skills, and advance your career at GlobalLogic. With our Career Navigator tool as just one example, GlobalLogic offers a rich array of programs, training curricula, and hands-on opportunities to grow personally and professionally.

Interesting & meaningful work.
GlobalLogic is known for engineering impact for and with clients around the world. As part of our team, you'll have the chance to work on projects that matter. Each is a unique opportunity to engage your curiosity and creative problem-solving skills as you help clients reimagine what's possible and bring new solutions to market. In the process, you'll have the privilege of working on some of the most cutting-edge and impactful solutions shaping the world today.

Balance and flexibility.
We believe in the importance of balance and flexibility. With many functional career areas, roles, and work arrangements, you can explore ways of achieving the perfect balance between your work and life. Your life extends beyond the office, and we always do our best to help you integrate and balance the best of work and life, having fun along the way

High-trust organization.
We are a high-trust organization where integrity is key. By joining GlobalLogic, you're placing your trust in a safe, reliable, and ethical global company. Integrity and trust are a cornerstone of our value proposition to our employees and clients. You will find truthfulness, candor, and integrity in everything we do.

About GlobalLogic
GlobalLogic, a Hitachi Group Company, is a trusted digital engineering partner to the world's largest and most forward-thinking companies. Since 2000, we've been at the forefront of the digital revolution – helping create some of the most innovative and widely used digital products and experiences. Today we continue to collaborate with clients in transforming businesses and redefining industries through intelligent products, platforms, and services.