Lead Data Platform Engineer — Hybrid/AWS & AI-Driven Tools

EPAM Systems; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

ESPP

Life insurance

Private medical

Employee Assistance Program

Pension plan

Cyclescheme

Season ticket loans

Office lunch (in-office)

Training & certifications

Regular social events

Job summary

EPAM Systems in London is seeking a Senior Data Platform Engineer to design, build and optimize large-scale data platforms that fuse legacy enterprise systems with modern AWS-powered architectures. The role emphasizes performance tuning, API development and platform modernization while ensuring reliability of critical services.

You will work across SQL Server, C#, AWS and AI-assisted tooling to accelerate delivery, maintain scalable data workflows, and collaborate with architects, engineers and

Qualifications

• Strong SQL Server capability with advanced queries and performance tuning
• Experience with large relational data estates and high-volume data
• Backend development proficiency in C# or readiness to transition to C#
• Knowledge of designing and building APIs for distributed systems
• Familiarity with AWS cloud services and deployment practices
• Competence in working within complex enterprise or legacy technology environments
• Understanding of ETL processes and data-processing pipeline design
• Ability to apply AI-assisted development tools effectively
• Strong analytical and problem-solving skills with attention to performance and scalability

Responsibilities

• Develop and optimize SQL Server queries, stored procedures, and data-processing workflows
• Design and implement backend services and robust APIs for enterprise systems and integrations
• Support existing legacy platforms while driving iterative modernization initiatives
• Improve query performance, indexing strategies, and overall processing efficiency
• Build and maintain services within AWS environments to enable scalable architectures
• Implement automation, monitoring, and operational enhancements to improve reliability
• Contribute to engineering standards, best practices, and platform-wide improvements
• Collaborate with architects, engineers, and product teams to deliver business-critical solutions
• Leverage AI-assisted development tools as part of modern engineering workflows

Skills

SQL Server

C#

AWS

APIs

Performance tuning

ETL

Data platforms

AI-assisted tooling

Legacy systems

Job description

EPAM Systems in London is seeking a Senior Data Platform Engineer to design, build and optimize large-scale data platforms that fuse legacy enterprise systems with modern AWS-powered architectures. The role emphasizes performance tuning, API development and platform modernization while ensuring reliability of critical services.

You will work across SQL Server, C#, AWS and AI-assisted tooling to accelerate delivery, maintain scalable data workflows, and collaborate with architects, engineers and