Role: Investment Accounting & Reporting Implementation Lead (12 month FTC)
Location: London
Position: Full time, Fixed Term
The Investment Accounting & Reporting Implementation Lead is accountable for end‑to‑end delivery of ledger, accounting and reporting requirements within an investments system implementation programme.
The role also has responsibility for delivery of Investments regulatory reporting forms into the MS Amlin BAU reporting teams during the transition period. The role acts as the primary SME and delivery lead across accounting and reporting design, vendor engagement, testing, controls, and transition into BAU.
About the job
While there is rarely a typical day, here’s a snapshot of some of the key parts of the job:
Accounting Services Design and configuration
Lead the definition of accounting requirements for all portfolios (existing and proposed new portfolios) for the set-up and configuration of the new Investments system
Act as the senior accounting SME for the new investment / accounting system
Ensure consistency of accounting treatment across portfolios and alignment with technical accounting standards
Regulatory & HO Reporting (Development)
Define required data sources for all Head Office and Regulatory reporting outputs
Review investment system reporting capabilities and map gaps against regulatory / HO needs
Act as SME for:
Configuration of customised system reports
UAT of reporting outputs
Design and oversee build of any overlay solutions required beyond core system outputs
Stakeholder Management
Primary liaison with:
System vendor (investment platform and accounting services)
BNP, BAU Finance teams, Investments team, and Technical Accounting support
ABS IT for Oracle GL feed setup
Own resolution of cross-team accounting and systems issues
Testing & Implementation
Own the definition of UAT and testing scenarios, leveraging BNP UAT materials where available
Lead and peer-review:
User Acceptance Testing (UAT)
Parallel runs of accounting and reporting outputs for selected portfolios in test environments
Sign off accounting and reporting readiness for go-live
Controls, Governance & Documentation
Ensure full process documentation is in place for:
New accounting processes
New reporting processes
Define control points, hand-offs, approvals, and sign-offs
Support internal and external audit readiness
Transition & BAU Considerations
Oversee transition of regulatory reporting activities from legacy providers (e.g. AIML) where applicable, ensuring reporting deliverables are delivered accurately, completely and timely during the transition period
Assess and manage risks relating to service cessation vs system go-live timelines
You’re going to enjoy the job if you also:
Have excellent organizational skills with the ability to prioritize and manage multiple tasks in a fast-paced environment.
Have effective communication and interpersonal skills to build relationships with internal and external stakeholders.
Demonstrate meticulous attention to detail.
Lead change effectively and always look for ways of improving existing processes.
What you’ll need:
Strong accounting background (investment accounting)
Demonstrated experience leading ledger or accounting system implementations
Proven SME-level knowledge and demonstrated experience in delivering insurance regulatory reporting
Experience owning UAT and parallel runs
Strong stakeholder management across IT, vendors, and finance teams
High attention to controls, governance, and documentation
We are stronger together because of our common interests and rich differences. You may be the strength we didn’t know we needed. Believe in yourself, and click apply today!
What Can You Expect From Us?
As well as a competitive base salary and performance related discretionary bonus, here is a link to our employee benefits - Benefits of working at MS Amlin | MS Amlin
Hybrid Working
At MS Amlin we operate a hybrid working model to empower our people with flexibility to blend where they work. We value collaboration and believe that we work better together, our teams typically do 3 days a week in the office.
About MS Amlin
MS Amlin is a leading (re)insurer and part of the global MS&AD Group, with operations across Lloyd’s of London, the Middle East, and Asia Pacific. With over 120 years of experience, we support businesses facing complex and demanding risks, providing continuity in an uncertain world. Our expertise covers Property, Casualty, Marine, Crisis Management, Natural Resources and Reinsurance, backed by strong underwriting capabilities and deep sector knowledge. At the core of our claims service is TRUST - Transparency, Responsiveness, Understanding, Solution-driven thinking, and Technical expertise. This defines how we manage claims and build lasting relationships.
We will build a workplace where all talent is welcomed, and everyone has the opportunity to influence how the business works. We have dedicated employee resource groups that support our Diversity, Equity, and Inclusion (DE&I) goals.
#LI-MSAUL
Skills Required
- Strong accounting background (investment accounting)
- Demonstrated experience leading ledger or accounting system implementations
- Proven SME-level knowledge and demonstrated experience in delivering insurance regulatory reporting
- Experience owning UAT and parallel runs
- Strong stakeholder management across IT, vendors, and finance teams
- High attention to controls, governance, and documentation
Millennium Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Millennium and has not been reviewed or approved by Millennium.
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Career-Linked Recognition & Rewards — Compensation is tightly linked to individual and team performance, enabling very high upside for strong performers in investment and specialized tech roles. The pod-based model concentrates rewards where results are delivered.
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Healthcare Strength — Medical, dental, vision, life, and disability coverage are presented as part of a comprehensive package that is competitive for the sector. Overall perks and health-related offerings are often characterized as strong.
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Retirement Support — Retirement programs include a 401(k) with matching and elements like profit sharing or defined-contribution pensions. These features signal meaningful long-term savings support alongside cash compensation.
Millennium Insights
What We Do
Millennium is a global alternative investment management firm, founded in 1989, which manages $54.9 billion in assets. We seek to pursue a diverse array of investment strategies across industry sectors, asset classes, and geographies. Our four primary strategies are RV Fundamental Equity, Equities Arbitrage, Fixed Income Strategies, and Quantitative Strategies. Millennium was founded on the belief that innovation and results come from empowering talented, independent-minded individuals. To us, success is the combination of drive and discipline. See our community guidelines at: mlp.com/guidelines



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