Lead Software Development Engineer - API Platform

Mastercard; London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Mastercard is seeking a Lead Software Development Engineer for their API platform in London. The role involves leading technical solutions, developing high-quality software, and collaborating with global teams to enhance Mastercard's digital payment services. Ideal candidates should have extensive backend development experience with strong skills in Java, API design, and Agile methodologies.

Qualifications

• 8+ years of backend development experience.
• Strong skills in Java and object-oriented design.
• Experience in designing and delivering APIs.

Responsibilities

• Lead planning, design, and implementation of technical solutions.
• Continuously develop and iterate features for the Mastercard Developers platform.
• Act as a subject matter expert for API Platform and services.

Skills

Java

Object-oriented design

API-based products

Agile environment

DevOps

Tools

Spring Boot

Kotlin

SQL (Oracle, PostgreSQL)

Job description

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

Lead Software Development Engineer - API Platform Overview

Mastercard Developers (https://developer.mastercard.com) is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities, and integrate it into new and innovative solutions. Mastercard Developers is looking for a versatile and customer-obsessed engineer to join our team. You will play a key role in designing and developing next-generation products and services for Mastercard's global audience.

• Would you enjoy collaborating with your team to design new features and solutions in an evolving enterprise environment?

• Do you have a strong background in developing and delivering high-volume web services?

• Are you passionate about delivering high-quality, high-performing, and highly extensible software?

• Are you as excited about the value of what you design and build for your customers as you are about the journey to deliver it?

• Do you want to be part of one of the most exciting global initiatives at Mastercard right now?

Role

• Lead planning, design, and implementation of technical solutions for global customers (internal and external).
• Continuously ideate, scope, develop, deliver, test, and iterate features for the constantly evolving Mastercard Developers platform.
• Ensure appropriate levels of automation are adopted (build, deploy, configure, validate, monitor).
• Liaise with other global technology, data, and operations teams to execute projects.
• Act as a subject matter expert for Mastercard Developers API Platform and services to support customer integrations as needed.

All About You

• 8+ years of backend development experience.
• Strong Java and object-oriented design and development skills.
• Knowledge of Kotlin is a plus, as it is one of our primary languages for backend services.
• Strong fundamentals of Spring Boot, microservices, and SQL-based databases (Oracle and PostgreSQL).
• Proven track record in API-based products.
• You care about the technical architecture and design—ensuring solutions are flexible and perform efficiently.
• Experienced working in an Agile environment with a global team that makes frequent production releases.
• Background in DevOps and automation is a distinct advantage.
• Experience in designing and delivering APIs and security models is an advantage.
• You strive to create highly intuitive and responsive products.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks come with inherent risks. Therefore, 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 accessed information.
• Report any suspected security violations or breaches.
• Complete all mandatory security trainings as per Mastercard’s guidelines.