Systems Integration Engineer - Entersekt

About 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. Entersekt enables secure digital transactions for leading financial institutions globally, currently protecting the digital transactions of over 210 million active users.

The Role

We are looking for a Systems Integration Engineer to join our Technical Delivery team, reporting to the Senior Director of Technical Delivery. In this role, you will own the technical integration between Entersekt’s SaaS products and customer environments. You will be responsible for integration design quality, API and SDK guidance, technical testing, and fault diagnosis through to go-live.

You will work closely with Implementation Managers, who coordinate onboarding and manage change requests, and Implementation Engineers, who own platform configuration and execution.

Key Responsibilities

Integration Design & Solutioning

• Own the technical integration design for new and existing customer onboarding, ensuring correctness and alignment with Entersekt’s platform standards.
• Provide API and SDK integration guidance to customer technical teams, translating product capabilities into clear, implementable integration designs.
• Define integration specifications, data flows, and authentication configurations in support of approved solution designs.
• Identify and communicate integration risks early, applying sound technical judgment to prioritize and mitigate issues.
• Ensure network integration requirements (connectivity, firewall rules, certificate exchange) are correctly defined and coordinated.

Technical Testing & Fault Diagnostics

• Lead technical testing activities across pre-production and production environments to validate integration correctness prior to go-live.
• Perform structured fault diagnosis for integration issues, identifying root causes and driving resolution in collaboration with internal and customer teams.
• Define and execute integration test plans covering key flows, edge cases, and security requirements.
• Support go-live readiness reviews and provide technical sign-off on integration quality and stability.

Customer Technical Engagement

• Engage directly with customer technical teams as the primary technical integration contact during onboarding.
• Communicate integration designs, requirements, and readiness status clearly to technical and semi-technical stakeholders.
• Manage technical dependencies and integration milestones in coordination with the Implementation Manager.
• Provide post-go-live technical handover to Customer Success or Support teams, including documentation and known considerations.

Collaboration & Delivery

• Work closely with Implementation Engineers to ensure configuration activities accurately reflect approved integration designs.
• Collaborate with Solutions Architects, Product, and Hosting teams to resolve complex integration challenges and feed back learnings.
• Adhere to change management, release, and integration governance processes, including activity tracking and reporting.
• Maintain accurate integration documentation, including design records, test outcomes, and handover artifacts.
• Contribute to the continuous improvement and scalability of integration delivery processes, standards, and tooling.

Requirements

• Bachelor’s degree in Engineering, Computer Science, Information Systems, or a related field.
• 7+ years of experience in technical integration, solution engineering, or systems integration within a SaaS or fintech environment.
• Strong hands-on experience with REST/SOAP APIs, SDK integration, and web services architecture.
• Solid understanding of security concepts, including PKI, TLS/SSL, certificates, and key management.
• Proven ability to own technical integration design from initial solutioning through to go-live.
• Experience engaging directly with customer technical teams in a delivery or pre-sales engineering context.
• Familiarity with ticketing and delivery tools (e.g., Jira, Zendesk).

Nice to Have

• Fintech domain experience, including EMV 3DS and Secure Customer Authentication (SCA).
• Scripting or automation experience supporting integration testing or deployment activities.
• Familiarity with mobile SDK integration (Android / iOS).
• Experience working in formal change and release-controlled environments.