Integration SME at Sunbytes in Hanoi, Hanoi, Vietnam

About the Opportunity On behalf of our client, we are looking for an Integration Subject Matter Expert (SME) to join a large-scale core banking transformation program based in Hoan Kiem.

This position will take ownership of the integration design end-to-end across all core banking domains—Payments, Trade Finance, Lending, General Ledger (GL), and Markets—ensuring a coherent, well-documented integration architecture between the core banking platform and its upstream/downstream ecosystem. The role will work closely with product SMEs, business stakeholders, the Solution Architecture team, and platform vendors.

This is a highly hands-on implementation role suitable for someone who desires working in a dynamic, multi-vendor environment, where the Integration SME is expected not just to advise, but to actively participate in delivering the transformation. The candidate must be comfortable working directly with product vendors to challenge, validate, and finalize the To-Be system design, acting as the definitive cross-domain integration authority on the program.

Key Responsibilities

• Act as the subject matter expert for cross-domain integration architecture during requirement analysis, solution design, build, testing, and cutover phases.
• Engage directly with product vendors and product SMEs (Trade, ACBS, CASA/Common Services, Payments, Murex) to align on integration touchpoints and drive decisions on the To-Be integration design.
• Lead workshops with business stakeholders, interface teams, the Solution Architecture team, and platform vendors to gather, validate, and finalize integration requirements.
• Own the preparation of Interface Specification Documents (ISDs) and integration architecture artifacts, and drive review and sign-off with all upstream and downstream teams.
• Coordinate integration testing (SIT/end-to-end) across domains, triage cross-system defects, and drive rapid resolution with vendors and delivery teams.
• Support cutover planning and hypercare across all integrated domains through go-live.
• Manage stakeholders across business, technology, and vendor teams, and proactively escalate cross-domain integration risks and issues.

Requirements

Requirements Technical skills:

• Minimum 10 years of overall IT experience, with substantial hands-on experience designing integration architecture in core banking transformation programs.
• Demonstrated experience integrating core banking with Payments, Trade Finance, Lending, GL, and Treasury/Markets systems (e.g., Murex).
• Solid understanding of middleware/integration layers such as ESB, API Gateway, or iPaaS platforms.
• Proven experience developing source-to-target data mapping and transformation logic across multiple domains.
• Experience supporting SIT/end-to-end testing, and troubleshooting integration defects across systems.
• Working knowledge of security and compliance requirements for banking/payment integrations (e.g., OAuth2, SSL, regulatory compliance).
• Advantage: Prior experience as a techno-functional integration lead spanning core banking plus payments/trade/lending domains.
• Advantage: Exposure to treasury/markets integration (e.g., Murex) for trades, risk, and PnL feeds.
• Advantage: Experience monitoring integration SLAs, throughput, and latency in a production banking environment.
• Fluent English is mandatory for direct communication with international teams and vendors.

Soft skills:

• Hands-on, proactive, and comfortable acting as an independent contributor who can drive solutioning and documentation.
• Strong analytical, problem-solving, and cross-domain troubleshooting skills.
• Excellent written and verbal communication skills; comfortable presenting cross-domain integration solutions to senior stakeholders and vendors.
• Able to work effectively and assertively within a complex, multi-vendor, and multi-country team.

Project Information & Logistics

• Project Scale: Large-scale core banking transformation.
• Working Location: Onsite in Hoan Kiem District.
• Working Schedule: 5 days/week. During the initial phase, a flexible hybrid model is offered (3 days working at the office and 2 days working remotely).
• Fast-tracked Recruitment: Streamlined 2-round interview process, with feedback expected within less than one week after completing the final round.