C++ Developer (IST/Switch)

FIS Payment Solutions & Svcs India Private Limited; India; On-site; INR 1,500,000 - 2,100,000; Full time

Job summary

FIS Payment Solutions & Svcs India Private Limited in India is seeking a Senior Software Engineer specializing in C++ to design, develop, and maintain enterprise-grade software for financial services. You will work with product managers, architects, and engineering teams to translate requirements into scalable, reliable applications across the full SDLC.

The role emphasizes high-performance code, code reviews, debugging, testing, and contributing to architecture decisions.

Qualifications

• 5+ years of experience developing commercial software using C++.
• Experience with financial services domain such as banking or payments is a plus.
• Exposure to software testing across unit/integration/system levels.

Responsibilities

• Design, develop, test, and maintain high-performance C++ applications.
• Collaborate with product managers, architects, and engineering teams to translate requirements into scalable solutions.
• Analyze complex business and technical challenges and deliver maintainable software.
• Create technical specifications and design documentation.
• Perform code reviews and promote software quality standards.
• Debug, troubleshoot, and resolve defects to ensure reliability and performance.
• Mentor junior engineers and share expertise across teams.

Skills

C++

Object-oriented programming

High-performance software

Code reviews

Unit testing

Integration testing

System testing

Mentoring

ISO 8583 messaging

Tools

ISO 8583 messaging

Job description

At FIS, our technology and our people are moving forward. We advance the way the world pays, banks and invests. We believe in building inclusive, diverse teams. Together, we innovate to help our colleagues, clients and communities succeed. If you’re ready to grow your career and make an impact in fintech, we have one question: Are you FIS?

About the Role

As a Senior Software Engineer specializing in C++, you will design, develop, and enhance enterprise-grade software solutions that support critical financial services operations. You will collaborate with product managers, architects, and engineering teams to translate business requirements into scalable, reliable, and high-performing applications. In this role, you will contribute across the full software development lifecycle, from design and coding to testing and deployment. Success is measured through software quality, technical innovation, system performance, and delivery of business value.

What You Will Be Doing

• Design, develop, test, and maintain high-performance software applications using C++ and modern development practices.
• Collaborate with product managers, business stakeholders, and engineering teams to define technical requirements and solution designs.
• Analyze complex business and technical challenges and deliver scalable, maintainable software solutions.
• Create detailed technical specifications, architecture components, and design documentation.
• Perform code reviews and promote engineering best practices, coding standards, and software quality initiatives.
• Debug, troubleshoot, and resolve application defects to ensure reliability, stability, and performance.
• Participate in software design discussions and contribute to architecture and technology decisions.
• Develop and execute unit, integration, and system testing to ensure high-quality releases.
• Support deployment, implementation, and maintenance activities while ensuring operational excellence.
• Mentor junior engineers and share technical expertise across development teams and stakeholders.

What your bring

• 5+ years of experience developing commercial software applications using C++. Good Experience in IST/Switch , Payment switch/processing, ISO 8583 messaging.
• Strong understanding of object-oriented programming, data structures, algorithms, and software design principles.
• Experience with software development lifecycle methodologies, including Agile, iterative, and waterfall approaches.
• Proven ability to design, develop, test, and optimize complex enterprise applications.
• Strong knowledge of design patterns, software architecture, and application scalability principles.
• Experience creating technical documentation, system specifications, and solution designs.
• Excellent analytical, problem-solving, communication, and collaboration skills.

Preferred Qualifications

• Experience within banking, financial services, fintech, or regulated environments.
• Knowledge of networking, operating systems, database technologies, middleware, and distributed systems.
• Experience with performance tuning, multithreading, and concurrent programming in C++.
• Familiarity with software quality frameworks, industry standards, and continuous improvement methodologies.
• Experience mentoring engineers and contributing to technical leadership initiatives.

What We Offer you

• Opportunities to make an impact in fintech
• Personal and professional learning
• Inclusive, diverse work environment
• Privacy Statement FIS is committed to protecting the privacy and security of all personal information that we process in order to provide services to our clients. For specific information on how FIS protects personal information online, please see the Online Privacy Notice.

Sourcing Model

Recruitment at FIS works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies.

FIS does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.