The Senior Software Engineer will design, develop, and deliver secure API integrations, managing the software development lifecycle and mentoring team members.
Our Purpose
Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.
Title and Summary
Senior Software Engineer
Senior Software Engineer - Integrations & API Connectivity
Overview
The Integrations & API Connectivity team is responsible for building secure, scalable, and compliant connections to Open Banking APIs of Financial Institutions and Payroll Providers. The team enables seamless integration across the financial ecosystem, supporting Mastercard's innovative products and platform expansion.
Role & Responsibilities
As a Senior Software Engineer, you will:
Design, develop, and deliver secure, high-quality API integrations with financial institutions and payroll providers
Lead system development, enhancements, and maintenance to meet defined service level agreements (SLAs)
Own the full software development lifecycle (SDLC), including requirements analysis, design, development, testing, deployment, and production support
Manage production incidents, perform root cause analysis, and participate in on-call support rotations
Research, evaluate, and recommend new technologies, frameworks, and third-party solutions
Collaborate closely with external vendors and ensure effective knowledge transfer to internal teams
Promote engineering excellence through code reviews, quality assurance processes, and adherence to Mastercard standards
Mentor and guide team members, including offshore developers, throughout the SDLC
All About You
Required Qualifications
Bachelor's degree in Computer Science, Information Technology, Engineering, Information Systems, or equivalent practical experience
5+ years of professional experience in software engineering or related technical roles
Strong experience designing and building APIs and integration-focused systems
Solid understanding of modern software engineering principles, distributed systems, and secure application development
Experience supporting production systems, including incident management and on-call responsibilities
High-energy, detail-oriented, and proactive, with the ability to work independently and manage priorities under pressure
Strong initiative, self-motivation, and a results-driven mindset
Excellent verbal and written communication skills, with strong collaboration and organizational abilities
Willingness to learn, adapt, and take on challenges in a diverse, globally distributed team
Preferred Qualifications
7+ years of experience delivering complex software systems at scale
Experience delivering secure solutions in the Financial Services, Payments, or Open Banking domain
Familiarity with regulatory, compliance, and security standards relevant to financial integrations
Working knowledge of AI-assisted development tools such as GitHub Copilot (GHCP), Claude, and similar generative AI tools, with the ability to leverage them to improve developer productivity, code quality, and engineering efficiency (strong plus)
Corporate Security Responsibility
All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:
Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.
Title and Summary
Senior Software Engineer
Senior Software Engineer - Integrations & API Connectivity
Overview
The Integrations & API Connectivity team is responsible for building secure, scalable, and compliant connections to Open Banking APIs of Financial Institutions and Payroll Providers. The team enables seamless integration across the financial ecosystem, supporting Mastercard's innovative products and platform expansion.
Role & Responsibilities
As a Senior Software Engineer, you will:
Design, develop, and deliver secure, high-quality API integrations with financial institutions and payroll providers
Lead system development, enhancements, and maintenance to meet defined service level agreements (SLAs)
Own the full software development lifecycle (SDLC), including requirements analysis, design, development, testing, deployment, and production support
Manage production incidents, perform root cause analysis, and participate in on-call support rotations
Research, evaluate, and recommend new technologies, frameworks, and third-party solutions
Collaborate closely with external vendors and ensure effective knowledge transfer to internal teams
Promote engineering excellence through code reviews, quality assurance processes, and adherence to Mastercard standards
Mentor and guide team members, including offshore developers, throughout the SDLC
All About You
Required Qualifications
Bachelor's degree in Computer Science, Information Technology, Engineering, Information Systems, or equivalent practical experience
5+ years of professional experience in software engineering or related technical roles
Strong experience designing and building APIs and integration-focused systems
Solid understanding of modern software engineering principles, distributed systems, and secure application development
Experience supporting production systems, including incident management and on-call responsibilities
High-energy, detail-oriented, and proactive, with the ability to work independently and manage priorities under pressure
Strong initiative, self-motivation, and a results-driven mindset
Excellent verbal and written communication skills, with strong collaboration and organizational abilities
Willingness to learn, adapt, and take on challenges in a diverse, globally distributed team
Preferred Qualifications
7+ years of experience delivering complex software systems at scale
Experience delivering secure solutions in the Financial Services, Payments, or Open Banking domain
Familiarity with regulatory, compliance, and security standards relevant to financial integrations
Working knowledge of AI-assisted development tools such as GitHub Copilot (GHCP), Claude, and similar generative AI tools, with the ability to leverage them to improve developer productivity, code quality, and engineering efficiency (strong plus)
Corporate Security Responsibility
All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:
- Abide by Mastercard's security policies and practices;
- Ensure the confidentiality and integrity of the information being accessed;
- Report any suspected information security violation or breach, and
- Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.
Similar Jobs at Mastercard
Blockchain • Fintech • Payments • Consulting • Cryptocurrency • Cybersecurity • Quantum Computing
Design, build, test, and operate scalable, secure backend APIs and services. Contribute to system design for scalability and resilience, write production-ready code, troubleshoot production incidents, improve observability and automation, and collaborate with Product, Architecture, Security, and SRE teams.
Top Skills:
.NetAws S3Azure App ServicesAzure Blob StorageAzure KeyvaultC#Ci/CdFlywayGithub CopilotJavaMicroservicesObservabilityPostgresRedisSecure DevelopmentSpring BootWeb Apis
Blockchain • Fintech • Payments • Consulting • Cryptocurrency • Cybersecurity • Quantum Computing
Own FI connectivity performance for open banking integrations: define metrics (success rate, latency, durability, data quality), build visibility via dashboards/APIs/webhooks, set resilience standards, prioritize platform improvements, reduce failures, and align cross-functional teams to drive roadmap and execution.
Top Skills:
APIsDashboardsData Connectivity PlatformsOauthOpen BankingWebhooks
Blockchain • Fintech • Payments • Consulting • Cryptocurrency • Cybersecurity • Quantum Computing
Build, validate, deploy, and monitor predictive and decisioning models using large structured and unstructured financial datasets. Apply statistical, machine learning, NLP, and deep learning techniques, measure model performance, implement scalable reproducible pipelines, collaborate with engineering/product teams, and communicate results and recommendations to stakeholders.
Top Skills:
Data Lake SystemsDockerEvent StreamsGenerative AiGitKubernetesLlmsMl FrameworksNlpNumpyPandasPrompt EngineeringPysparkPythonRest ApisScipySparkSQL
What you need to know about the Kolkata Tech Scene
When considering the industries shaping India's tech scene, gaming might not immediately come to mind. However, in the last decade, increased internet usage and greater access to mobile devices have catapulted the industry to new heights, with Kolkata-based companies like Virtualinfocom, Red Apple Technologies and Digitoonz, at the forefront, driving the design and animation of new gaming titles for players.
