Solution Architect/ SME

Worldline; City of Westminster; On-site; GBP 60,000 - 85,000; Full time

Job summary

A leading global payment solutions provider is seeking a Solution Architect to join their LENNON Transformation project team in London. The ideal candidate will have at least 5 years of experience with LENNON, possess strong skills in Cool:Gen, Oracle, and related technologies. This role involves reverse engineering existing applications, ensuring smooth transitions to SCALA, and acting as a key contact for third-party suppliers. The position offers competitive compensation, flexible working arrangements, and extensive training opportunities.

Benefits

Competitive compensation and annual bonus potential

Flexible working arrangements

Health and wellness programs

Extensive training and career development opportunities

Global mobility opportunities

Inclusive culture and employee resource groups

Qualifications

• 5+ years of LENNON experience required.
• Strong background in Cool:Gen within online and batch environments.
• Ability to troubleshoot effectively in a fast-paced environment.

Responsibilities

• Review documentation and source code to reverse engineer specifications.
• Redesign infrastructure for the transition to a new DBMS and SCALA application.
• Support the Third Party Supplier and BAU support teams.

Skills

Problem-solving

Cool:Gen

Oracle

Unix scripting

PL/SQL

SQL

C

Batch job scheduling

Job description

Solution Architect/ SME

Company: Worldline

Location: London, United Kingdom

Employment Type: Permanent

Job Posting Date: 2025-11-30

Job ID: 23471107

Work Schedule: Full time

Compensation: Competitive

About Worldline

Worldline helps businesses of all shapes and sizes to accelerate their growth journey – quickly, simply, and securely. We are the innovators at the heart of the payments technology industry, shaping how the world pays and gets paid. Our technology powers the growth of millions of businesses across 5 continents. And just as we help our customers accelerate their business, we are committed to helping our people accelerate their careers. Together, we shape the evolution.

The Opportunity

We are looking for a talented Solution Architect with subject matter expertise in the UK Rail Revenue distribution within the LENNON core service to join our LENNON Transformation project team. The successful candidate will have at least 5 years previous LENNON experience and be well‑versed in the core skill of Cool:Gen in online and batch environments. The successful candidate will be responsible for reverse engineering existing Cool:Gen batch and online modules to support a third‑party supplier in the re‑design and re‑development in SCALA.

Day‑to‑Day Responsibilities

• Review existing documentation and Cool:Gen source code to reverse engineer specifications to be provided to a third‑party supplier for subsequent re‑development, testing and delivery into live operation.
• Work with existing Solution Architects to redesign the infrastructure in a way that allows a smooth transition away from an Oracle Cool:Gen application to a new DBMS (TDB) and SCALA application.
• Requirements: strong background with Oracle, Unix scripting, PL/SQL, SQL, C, batch job scheduling to form part of the overall design.
• Work with the existing LENNON support teams to support the Third Party Supplier with any questions they may have, acting as their single point of contact so the BAU support teams can concentrate on the live service.
• Form a good working relationship with the existing BAU support teams to ensure a smooth transition of knowledge.
• Support the Third Party and LENNON Testing teams with testing of the re‑engineered solution.

Who Are We Looking For

We look for a big thinker – someone who can drive positive change, step up and show what’s next, with passion, a can‑do attitude, and a hunger to learn and grow. In practice this means:

• Excellent problem‑solving skills that allow you to troubleshoot issues effectively in a fast‑paced environment.
• Skilled in Cool:Gen, Oracle, Unix scripting, PL/SQL, SQL, C, batch job scheduling.
• Ability to pull together existing design documentation and source code across multiple technologies into one coherent design.
• Opportunity‑seeker in improving architecture and application.
• Good communication skills and the ability to work as part of a team that will include external suppliers, while working autonomously.

Perks & Benefits

• Competitive compensation and annual bonus potential.
• Flexible working arrangements.
• Health and wellness programs.
• Extensive training and career development opportunities.
• Global mobility opportunities.
• Inclusive culture and employee resource groups.

Equal Opportunity Statement

We are proud to be an Equal Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as an individual with a disability, or any applicable legally protected characteristics.