Software Engineer

Why Entersekt

Founded over 16 years ago, with more recent investments from Accel-KKR, Entersekt is a leader in digital banking fraud prevention and payment security, including mobile authentication, mobile app security, and 3D Secure authentication for issuers, acquirers and payment networks. We offer highly scalable products with a track record of success across multiple continents.

Entersekt enables secure digital transactions for leading financial institutions globally. We exist to create a world where everyone can transact digitally without fear or compromise. Currently, we protect the digital transactions of over 210 million active users on our platform and hold 120 active patents that recognize innovation in digital security, payments, and user experience. Entersekt offers customers secure authentication and digital payments experiences that remove unnecessary friction. Entersekt has a diverse product portfolio and aggressive roadmap that positions the company well to sustain competitive advantage as it expands globally with emphasis on North America and European markets.

The Ideal Candidate

The ideal candidate is a senior backend engineer with strong Java expertise who is comfortable working on security‑critical, regulated systems. You have experience designing, building and maintaining distributed backend services, enjoy taking ownership of complex technical problems, and are able to balance delivery with long‑term maintainability.

You are confident working independently, contributing to architectural decisions, and mentoring other engineers, while collaborating closely with product, QA and DevOps teams. Experience in payments, fintech or other high‑security environments will be a strong advantage.

The Role

As a Senior Software Engineer in the 3DS Payments team, you will work on backend services that support secure payment authentication and the handling of sensitive data. The role focuses on developing and maintaining Java‑based services, improving system reliability and performance, and ensuring compliance with security and regulatory requirements.

You will contribute to system design, guide technical decision‑making, and help drive continuous improvement across the codebase and platform.

Responsibilities

• Design, develop and maintain backend services within the 3DS Payment’s platform
• Build and maintain RESTful APIs and distributed systems
• Develop and support Java applications deployed on Apache Tomcat
• Design, optimise and maintain MySQL database schemas and queries
• Identify and resolve performance, stability and production issues
• Contribute to architectural decisions and technical tradeoffs