Rolling Arrays - Consulting

HR transformation consulting & implementation Asia

Interface Designer Senior Consultant

Implementation & Technical Account ManagementConfirmed live in the last 24 hours

Full-timeSingaporeNo salary listedHybrid

About the Job

Requirements

The candidate must have 4–5 years of Oracle HCM experience and have owned interface design workstreams through UAT sign-off on at least two implementations.
The candidate must have experience owning and managing an interface catalogue of 10 or more integrations on a single engagement.
The candidate must have reviewed built integrations against specifications, raised formal defects, and managed rework through sign-off.
The candidate must be able to manage third-party system teams and escalate through project governance when external dependencies block progress.
The candidate must be able to present integration workstream status, risk, and readiness to client IT directors and project leadership.
The candidate must be able to present integration design decisions to client IT architects and discuss them at a technical authority level.
The candidate must be able to communicate interface catalogue status, risk, and readiness so project leadership can make decisions.
The candidate must be able to implement IDD sign-off processes that prevent downstream defects without creating bureaucratic delays.
The candidate must be able to own the integration workstream end-to-end without functional or technical hand-holding.
The candidate must be able to review OIC builds against specifications, raise formal defects, and manage rework to resolution.

Responsibilities

Own the integration catalogue from the start of the project, produce the full interface inventory within the first two weeks of the design phase, classify each interface by pattern, direction, criticality, and third-party owner, and maintain it as the project's single source of truth.
Lead integration requirements workshops, elicit trigger conditions, error-handling expectations, service-level agreement requirements, and business consequences of failure, and produce outputs that feed directly into Interface Design Document authoring.
Produce and own Interface Design Documents at sufficient precision for an Oracle Integration Cloud developer to build without functional re-engagement, and establish a client IT sign-off process before development begins.
Drive interface prioritization and phasing by recommending development sequence based on go-live criticality, third-party readiness, and data-migration dependencies, and escalate when a third-party team blocks sign-off.
Review and approve Oracle Integration Cloud developer builds against Interface Design Document specifications, log formal defects with references to specific document fields, and distinguish design deviations from legitimate technical implementation decisions.
Own integration user acceptance testing by designing the test plan, coordinating third-party test-environment availability, and driving defect resolution through formal sign-off.

Desired Qualifications

Oracle Cloud Platform Application Integration 2025 Professional certification (Oracle Integration Cloud certification); the posting describes it as an expected credential at Senior Interface Designer level.
Oracle Global Human Resources Cloud Implementation Professional certification; the posting notes that Core HR module certification enables independent validation of data availability against the Oracle HCM object model.
Oracle Fusion Cloud Applications HCM Process Essentials certification.
Experience designing interfaces between Oracle HCM and Oracle ERP, or between Oracle HCM and third-party payroll, HRIS, or access-management systems in APAC.

Interface Designer - Senior Consultant

Rolling Arrays - Consulting · Singapore, Singapore (Hybrid) · Contract · Posted 2026-10-14

Workplace: hybrid

Department: Oracle

Description

Integration risk is invisible until go-live. The Senior Interface Designer is the person who makes it visible — knowing which interfaces are on the critical path, which third-party system teams are behind, and which mapping decisions will create a production defect six months after go-live. That awareness comes from owning the workstream, not contributing to it.

ABOUT ROLLING ARRAYS

Rolling Arrays is a private equity-backed, award-winning HR Tech consulting firm — Asia Pacific's premium partner for enterprise HR digital transformation. Headquartered in Singapore and with offices across India, Malaysia, Australia, and Hong Kong, we have delivered more than 200 HR Transformation projects since our founding in 2009, and were recognised as one of Singapore's Top 100 fastest-growing companies in 2025. We specialize in SAP SuccessFactors, Oracle HCM, and Workday across the full delivery spectrum: HR process design and consulting (ALIGN), technology implementation (AUTOMATE), change management and adoption (ADOPT), and managed support services (AMS).

POSITION SUMMARY

RAC is seeking a Senior Functional Interface Designer to lead the integration design workstream on Oracle HCM implementations. You will own the end-to-end interface catalogue — from requirements elicitation and IDD production through developer handoff, testing, and UAT sign-off — acting as the functional integration authority for the delivery team and the primary interface contact for the client's IT architecture team.

WHAT YOU WILL DO

Own the integration catalogue from day one — producing the full interface inventory within the first two weeks of design phase, classifying each interface by pattern, direction, criticality, and third-party owner, and maintaining it as the single source of truth throughout the project
Lead integration requirements workshops — extracting trigger conditions, error handling expectations, SLA requirements, and business consequence of failure, and producing workshop outputs that flow directly into IDD authoring
Produce and own all Interface Design Documents — at a level of precision that an OIC developer can build from without functional re-engagement, with a client IT sign-off process before development begins
Drive interface prioritisation and phasing — recommending development sequence based on go-live criticality, third-party readiness, and data migration dependencies, and escalating when a third-party team is blocking sign-off
Review and approve OIC developer builds against IDD specifications — logging formal defects with reference to specific IDD fields and distinguishing design deviations from legitimate technical implementation decisions
Own integration UAT — designing the test plan, coordinating third-party test environment availability, and driving defect resolution to formal sign-off

WHY ROLLING ARRAYS

RAC's Oracle HCM programmes are multi-country, multi-integration engagements where integration risk is one of the top three programme risks on every project. As the functional integration lead, you own that risk — and you have the visibility, authority, and pathway to Solution Architect that comes with it.

OUR CULTURE CODE

Six values define how we operate every day at Rolling Arrays:

Thinking Smart — spot patterns, chase smarter solutions, and illuminate the path to greater productivity
Never Stop Learning — refine and elevate skills constantly; explore the world with a curiosity lens
Being Nice to Everyone — treat everyone with genuine warmth and respect, regardless of seniority
Be Super Patient with Customers — exercise patience and proactivity in every client interaction
Help Your Teammates — share the load, lighten the stress, nurture a truly collaborative team
Acknowledge Your Mistakes — embrace mistakes as steppingstones; grow from each one

Requirements

WHAT WE'RE LOOKING FOR

4–5 years of Oracle HCM experience with proven interface design workstream ownership on at least two implementations through to UAT sign-off
Experience owning and managing an interface catalogue of 10+ integrations on a single engagement
Demonstrated developer QA experience — has reviewed built integrations against specifications, raised formal defects, and managed rework to sign-off
Ability to manage third-party system teams and escalate through the project governance structure when external dependencies are blocking progress
Ability to present integration workstream status, risk, and readiness to client IT Directors and project leadership

PREFERRED QUALIFICATIONS

Oracle Cloud Platform Application Integration 2025 Professional — the OIC certification; at Senior Interface Designer level this is an expected credential, not aspirational
Oracle Global Human Resources Cloud Implementation Professional — Senior interface leads who hold the Core HR module certification can independently validate data availability against the Oracle HCM object model without escalating to the functional team
Oracle Fusion Cloud Applications HCM Process Essentials certified — the foundational HCM credential confirming cross-module process understanding
Experience designing interfaces between Oracle HCM and Oracle ERP, or between Oracle HCM and third-party payroll, HRIS, or access management systems in APAC

BUSINESS & CONSULTING SKILLS

IT architecture credibility — presents integration design decisions to client IT architects and holds the conversation at a technical authority level
Third-party system management — manages external system teams who are not under RAC's control and escalates effectively when they are blocking the programme
Integration risk communication — translates interface catalogue status, risk, and readiness into a format that project leadership can make decisions from
IDD governance — implements a sign-off process that prevents downstream defects without creating bureaucratic delays
Workstream leadership — owns the integration track end-to-end without requiring functional or technical hand-holding
Developer quality review — reviews OIC builds against specifications, raises formal defects, and manages rework to resolution

CAREER PROGRESSION

Senior Consultant → Lead Consultant → Solution Architect → Practice Lead

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About the Company

Rolling Arrays - Consulting

HR transformation consulting & implementation Asia

Rolling Arrays provides HR Transformation services across Asia, including SAP SuccessFactors, Workday, Qualtrics, HR consulting, change and adoption programs, AMS, data migration, and HRIS integration. It uses a consultative approach to align HR processes, functions, and technology, delivering projects that improve employee experiences through system integration and change management. The company differentiates itself with a regional footprint in six countries, a track record of 200+ projects for 150+ clients since 2009, and multiple industry awards and SAP partnerships. Its goal is to help organizations design and implement effective HR systems and processes that raise employee engagement, streamline HR operations, and drive better business outcomes.

Company size: 201-500
Company stage: Not listed
Total funding: Not listed
Headquarters: Singapore, Singapore
Founded: 2009

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