Systems Integration 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 technical integration specialist with a strong background in API and SDK-based solutioning, and a proven ability to own the end-to-end technical integration of complex SaaS products in a fintech environment. They bring a design-first mindset, combining technical rigour with clear communication. They are equally comfortable working through integration architecture with a customer’s technical team and translating approved designs into precise, testable implementations. This role suits an individual who thrives on technical ownership, applies a disciplined approach to fault diagnosis and risk management, and takes pride in delivering integrations that are correct, reliable and scalable.

The Role

We are looking for a Systems Integration Engineer to join our Technical Delivery team, reporting to the Senior Director of Technical Delivery. As a Systems Integration Engineer, you will own the technical integration between Entersekt’s SaaS products and customer environments. Responsible for integration design quality, API and SDK guidance, technical testing and fault diagnosis through to go‑live, tracking and managing activity through agreed systems and processes.

You will work closely with Implementation Managers, who coordinate onboarding and manage change requests, and with Implementation Engineers, who own platform configuration and execution. Your focus is on the technical integration layer, ensuring designs are correct, risks are identified and managed, and integrations are delivered to the highest standard.

You will engage directly with customer technical teams, providing expert guidance and ensuring alignment between Entersekt’s integration standards and the customer’s technical environment. You will also be in a unique position to help make recommendations regarding the next generation of product and integration standards and will partner with the product team as part of this continuing evolution.

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 Entersekt’s 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 judgement to prioritise and mitigate issues

Ensure network integration requirements, including connectivity, firewall rules and certificate exchange are correctly defined and coordinated

Technical Testing & Fault Diagnostics

Lead technical testing activities across pre‑production and production environments, validating 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, ensuring coverage of key flows, edge cases and security requirements

Support go‑live readiness reviews, providing 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 and confidently 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 integration 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 integration learnings

Adhere to Entersekt’s change management, release and integration governance processes including activity tracking and reporting.

Maintain accurate and thorough integration documentation, including design records, test outcomes and handover artefacts

Contribute to the continuous improvement and scalability of integration delivery processes, standards and tooling

Skills & Experience

Must-Have Qualifications & Experience

Bachelor’s degree in Engineering, Computer Science, Information Systems or a related field

7+ years’ 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

Personality Attributes

Technically Rigorous : Applies depth and precision to integration design, testing and fault diagnosis

Design‑Led : Approaches integration challenges with a structured, solution‑oriented mindset

Risk‑Aware : Identifies and communicates technical risks clearly, with a focus on control and prioritisation

Collaborative : Works effectively with Implementation Managers, Implementation Engineers and customer technical teams

Clear Communicator : Translates complex technical concepts into clear guidance for both technical and non‑technical audiences

Accountable : Takes ownership of integration quality and correctness from design through to go‑live

We place a lot of value on how we treat prospective employees and appreciate the time and effort that goes into job hunting. That is why we aim to keep the hiring process as quick and seamless as possible while ensuring the best possible fit for both you and the company.

Working at Entersekt is truly a dream. You get exposed to cutting-edge technology, colleagues who are leaders in their fields, and an awesome working environment that includes flexible hours, remote work, and plenty of growth opportunities.

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