Senior Engineer, Finance Systems (FP&A Specialisation)

IRIS Software Group is one of the UK's largest privately held software companies, trusted by 100,000+ businesses, schools, and accountancy firms. Their software pays 1 in 6 UK employees and supports 12,000+ schools, relied upon by 91 of the top 100 UK accountancy firms. IRIS is a Great Place to Work® certified employer, recognised for well-being, inclusion, and development.

Main Role Overview

IRIS is seeking a Senior Engineer, Finance Systems to design, build, and integrate finance applications with a specialisation in FP&A (Financial Planning and Analysis). The initial focus is on implementing a purchased FP&A product, acting as the internal technical owner, directing vendors and system integrators (SI) through implementation and ongoing maintenance. The role will later expand to oversee other finance applications as the estate grows.

You will collaborate closely with the NetSuite platform team, focusing on collaborative problem-solving, effective design, and delivering high-quality solutions. The role emphasises maintaining best practices, security, and business continuity, with a primary focus on Finance stakeholders. This is an opportunity to join a growing team with significant scope for personal and professional growth.

Main Responsibilities

As the Senior Engineer, Finance Systems, your responsibilities include:

• Act as the internal technical owner for finance applications, particularly FP&A, directing vendors and SIs through implementation and ongoing maintenance, including scope, design review, UAT, and go-live. Ensure quality assurance and ownership of outcomes.
• Prefer configuration over customisation, keeping solutions within product boundaries, and challenge stakeholders to adjust processes where a process change is more suitable than custom development.
• Ensure a smooth transition from SI to business-as-usual, including continuous improvement, development, and support of applications.
• Design, develop, configure, and integrate finance applications beyond FP&A, including integrations with other systems and NetSuite as the ERP hub, using APIs, data models, and process automation.
• Partner with Finance stakeholders to translate FP&A and other finance requirements into technical designs and working solutions.
• Create and maintain comprehensive documentation for all development and customisation activities.
• Provide security, data protection, and technical guidance to SI partners and colleagues on finance-application development, integration patterns, and delivery best practices.
• Stay current on finance-application platforms and recommend improvements. Collaborate with Finance, NetSuite platform team, and other systems teams.

Qualifications

A bachelor's degree in computer science (CS), Computer Information Systems (CIS), Management Information Systems (MIS), Business Administration, or a related subject is preferred.

Minimum of 5 years of experience building and integrating business applications with finance-domain exposure, such as FP&A, ERP, billing, or similar.

Experience working in a finance-systems landscape that includes an ERP (NetSuite or similar) is desirable.

Knowledge/Experience

· Hands-on experience developing and integrating business or finance applications, including APIs, data models, SQL or equivalent, and middleware or similar integration tools.

· Understanding of configuration versus customisation, and experience keeping packaged products within configuration boundaries.

· Experience implementing, maintaining, or technically overseeing a commercial FP&A product (e.g., Anaplan, OneStream, Pigment, or NetSuite Planning and Budgeting) is highly desirable.

· Comfortable being the internal engineer who oversees a vendor or system integrator (SI) implementation of a purchased finance application while also doing hands-on engineering on other finance systems.

· Working knowledge of development and IT service management practices, including change management, service requests, incident and problem management.

· Working knowledge of access management, IT controls, and compliance frameworks such as SOC, SOX, and GDPR.

· Working knowledge of Jira and Confluence.

· Experience working with or managing system integrators (SIs) / implementation partners.

· Excellent documentation skills to ensure clear and comprehensive records of development activities.

· Experience working in Agile teams.

· Experience providing technical guidance and mentoring on development best practices.

· Excellent verbal and written communication skills, including stakeholder engagement and expectation management, with the ability to convey technical concepts to non-technical stakeholders.

Key Competencies

· Self-starter with the ability to work independently, handle multiple tasks, and maintain organisation and prioritisation skills in a fast-paced environment.

· Enthusiastic about technology, proactive, and self-motivated with a track record of personal and team success.

· Directs SI and vendor partners effectively, owning delivery quality and outcomes without requiring line-management responsibility.

· Demonstrates strong written and verbal communication skills.

· Excels in problem-solving and has good analytical abilities.

· Takes ownership and consistently prioritises doing the right thing.

· Agile ways of working including transparency, strong work ethic, and supporting others.

· Strong stakeholder engagement and expectation management.

· Shows urgency and responsiveness when handling incidents or requests.

· Applies critical thinking and sound decision-making, and escalates appropriately.