Finance Integration Specialist - S2P, SQL, e-Invoicing, Peppol in City of London
Finance Integration Specialist - S2P, SQL, e-Invoicing, Peppol

Finance Integration Specialist - S2P, SQL, e-Invoicing, Peppol in City of London

City of London Full-Time 75000 - 85000 £ / year (est.) No home office possible
Smart Sourcer Limited

At a Glance

  • Tasks: Join a global law firm to enhance e-invoicing and transaction controls.
  • Company: Renowned global law firm with a strong finance function.
  • Benefits: Competitive salary, flexible remote work, and comprehensive benefits package.
  • Why this job: Be a key player in transforming financial processes across multiple jurisdictions.
  • Qualifications: 7+ years in integration roles with expertise in e-invoicing and CTC.
  • Other info: Dynamic hybrid role with opportunities for professional growth.

The predicted salary is between 75000 - 85000 £ per year.

Outstanding opportunity to join this famous, global law firm within their Finance function to support the strengthening of their global e-invoicing and continuous transaction controls (CTC) capabilities. We are looking for an Integration Specialist to play a pivotal role in this transformation. This is a hands-on hybrid role blending business analysis, integration design, data modelling, and financial process expertise. You will work across multiple global jurisdictions, partnering with Finance, Tax, IT, and local offices to deliver compliant, scalable, and high-quality integrations.

Required Experience:

  • Proven experience designing integration solutions for e-invoicing & CTC across multiple jurisdictions.
  • Working knowledge of PEPPOL, UBL 2.1, JSON / XML schemas, and digital certificates/signatures.
  • Strong SQL skills to support the generation of JSON / XML files.
  • Strong understanding of Source to Pay including VAT, self-billing, credit notes, withholding, FX, and tax determination.
  • Hands-on integration skills: REST/JSON APIs, XML/UBL, file/batch interfaces, and familiarity with iPaaS/middleware.
  • Strong Data modelling, canonical modelling and Data Mapping skills.
  • Experience with PMS or ERP systems (e.g. Elite 3E, Aderant, SAP, Oracle), e-invoicing gateways, and tax engines (e.g. ONESOURCE, Vertex).
  • Strong understanding of AP/AR processes, invoice lifecycle, GL coding, cost centres, and master data.
  • Excellent documentation skills (specs, mapping workbooks, sequence/data flow diagrams, control documentation).
  • Experience working in Agile environments with matrixed stakeholders.
  • Strong stakeholder management and clear, concise communication.
  • 7+ years in Business Analysis / Integration roles with a track record in e-invoicing & CTC programmes.

What You Will Do:

  • Gather and document business, functional, and non-functional requirements for e-invoicing/CTC compliance.
  • Map current-state AP/AR, tax, and reporting processes; define future-state operating models.
  • Analyse data ownership, lineage, quality rules, and reconciliation needs across PMS/ERP, billing, tax engines, data warehouses, and e-invoicing platforms.
  • Build canonical data models for invoices, credit/debit notes, and adjustments.
  • Define field-level mappings between internal schemas and external standards (PEPPOL BIS/UBL 2.1, country-specific JSON/XML, CSV).
  • Produce transformation specifications, validation rules, and exception logic.
  • Define reference and master data synchronisation requirements.
  • Partner with architects/engineers to design integrations with robust error handling, retries, idempotency, correlation IDs, monitoring, and alerting.
  • Translate jurisdictional mandates into implementable requirements (formats, protocols, signatures, QR codes, archiving, clearance vs post-audit).
  • Coordinate pilots, phased deployments, cutover, regression analysis, and hypercare.
  • Produce compliance documentation with Finance, Tax/VAT, and Risk & Compliance.
  • Define test strategy, test cases, and acceptance criteria across functional, integration, negative/error, performance, and control testing.
  • Prepare sample payloads (JSON, XML/UBL), mocks, and validation checks.
  • Lead UAT with Finance/AP/AR and local office teams; manage defects to closure.

£75k-£85k + benefits. 12 months FTC. City of London. 40% remote.

Finance Integration Specialist - S2P, SQL, e-Invoicing, Peppol in City of London employer: Smart Sourcer Limited

Join a prestigious global law firm as a Finance Integration Specialist, where you will be part of a dynamic team dedicated to enhancing e-invoicing and continuous transaction controls. With a strong emphasis on employee growth, this role offers a unique opportunity to work in a collaborative environment that values innovation and compliance across multiple jurisdictions. Enjoy a competitive salary, flexible working arrangements, and the chance to contribute to transformative projects within a supportive culture that prioritises professional development.
Smart Sourcer Limited

Contact Detail:

Smart Sourcer Limited Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Finance Integration Specialist - S2P, SQL, e-Invoicing, Peppol in City of London

✨Tip Number 1

Network like a pro! Reach out to your connections in the finance and tech sectors, especially those who have experience with e-invoicing and CTC. A friendly chat can lead to insider info about job openings that aren't even advertised yet.

✨Tip Number 2

Show off your skills! Prepare a portfolio or case studies showcasing your previous integration projects, especially those involving SQL, JSON, and PEPPOL. This will help you stand out during interviews and demonstrate your hands-on experience.

✨Tip Number 3

Practice makes perfect! Brush up on your technical skills related to data mapping and modelling. You might get asked to solve a problem on the spot, so being sharp on your SQL and integration design will give you an edge.

✨Tip Number 4

Don’t forget to apply through our website! We’ve got loads of opportunities waiting for talented folks like you. Plus, it’s a great way to ensure your application gets seen by the right people in our team.

We think you need these skills to ace Finance Integration Specialist - S2P, SQL, e-Invoicing, Peppol in City of London

SQL
e-Invoicing
CTC
PEPPOL
JSON
Data Mapping
Data Modelling
Integration Design
REST APIs
XML
PMS Systems
ERP Systems
Stakeholder Management
Documentation Skills
Agile Methodologies

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the Finance Integration Specialist role. Highlight your experience with e-invoicing, CTC, and SQL skills. We want to see how your background aligns with what we're looking for!

Showcase Your Skills: Don’t just list your skills; demonstrate them! Use specific examples from your past roles that showcase your hands-on integration skills and data modelling expertise. This helps us see you in action.

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Explain why you're passionate about this role and how your experience makes you the perfect fit. We love seeing enthusiasm and a clear understanding of our needs.

Apply Through Our Website: We encourage you to apply through our website for a smoother process. It helps us keep track of your application and ensures you don’t miss any important updates. Plus, it’s super easy!

How to prepare for a job interview at Smart Sourcer Limited

✨Know Your Tech Inside Out

Make sure you brush up on your SQL skills and get familiar with JSON, XML schemas, and PEPPOL standards. Be ready to discuss how you've used these technologies in past projects, as this role heavily relies on them.

✨Understand the Business Context

Dive deep into the Source to Pay (S2P) process and be prepared to explain how e-invoicing and continuous transaction controls fit into it. Showing that you understand the financial processes and compliance requirements will set you apart.

✨Prepare for Scenario-Based Questions

Expect questions that ask you to solve real-world problems related to data mapping or integration design. Think of examples from your experience where you successfully navigated challenges in these areas, and be ready to walk through your thought process.

✨Showcase Your Stakeholder Management Skills

This role involves working with various teams, so be prepared to discuss how you've effectively communicated and collaborated with stakeholders in the past. Highlight any experience you have in Agile environments, as this will demonstrate your adaptability.

Finance Integration Specialist - S2P, SQL, e-Invoicing, Peppol in City of London
Smart Sourcer Limited
Location: City of London

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