Saurabh Sharma
Verified Expert in Engineering
AI Solution Architect and Developer
London, United Kingdom
Toptal member since September 1, 2026
Across telecom, banking, and global retail, Saurabh has spent 16 years building enterprise-scale eCommerce, OMS, and AI systems. His toolkit centers on Java, React, and Claude for regulated industries. While at LEBARA Group UK, Saurabh drove a 60% reduction in costs across distributed cloud workloads.
Portfolio
Experience
- Java - 16 years
- Spring - 12 years
- Apache Kafka - 6 years
- Azure - 2 years
- OpenAI - 2 years
- Claude - 1 year
- Pinecone - 1 year
- LangChain - 1 year
Preferred Environment
AWS IoT, Azure, GCP, Kubernetes, Terraform, Docker, Jenkins, Azure DevOps, Datadog, Splunk
The most amazing...
...automation platform I've architected enabled a 60% reduction in distributed cloud workload costs for a global telecom across 40 markets.
Work Experience
Enterprise AI Solution Architect
Lebara
- Led architecture for Claude-powered automation, multi-step reasoning workflows, and enterprise AI adoption.
- Designed and delivered Java/Spring microservices and React-Native applications for identity, pricing, and telco operations.
- Built the company's Claude-driven design system, enabling automated UI component generation for React/React-Native.
- Developed RAG pipelines (LangChain and Pinecone), supporting pricing, marketing, and operational intelligence across 40 markets.
- Authored and enforced AI governance, red-teaming frameworks, and safe-use guidelines.
- Drove cloud optimization initiatives, achieving 60% cost reduction across distributed workloads.
Principal Cloud Consultant, Lead Solution Architect
IBM UK
- Designed a SAP Commerce and IBM Sterling OMS solution for the B2B/B2C Accelerator.
- Managed and coached multiple teams across the EMEA cross-functional teams.
- Built highly scalable, available, resilient, and secure SAP Commerce decomposition projects for several clients to ship features faster and independently.
- Delivered Java/SpringBoot microservices, event-driven architectures, and API-driven workflows across payments and reporting.
- Integrated Claude/Watsonx/OpenAI models into reconciliation, summarization, and data-quality systems.
- Created reusable prompt libraries, evaluation frameworks, and engineering standards for AI-augmented systems.
- Built an AI-based patent document verification check and approval process using IBM Watsonx Granite, LangChain, and Lang Graph.
Senior Lead Developer
Thoughtworks
- Delivered cloud-native microservices platforms using Java, React, GraphQL, and Kafka.
- Defined API-first integration patterns and service contracts for distributed systems.
- Reduce Cloud expenditure and improve credit score check, end-to-end check, and validation.
Payment Architect
MatchesFashion
- Modernized payment platforms integrating Stripe, PayPal, OMS, and downstream reconciliation systems.
- Improved payment success rates through architectural redesign and data-quality controls.
- Improved 70% payment reconciliation and machine learning-based payment fraud detection.
Senior Solution Architect
IBM CIC UK / IBM India
- Designed financial data flows, Oracle Financials integrations, and reconciliation pipelines for banking clients.
- Ensured compliance with audit, governance, and regulatory standards across financial systems.
- Handled £20 million in an application modernization and migration engagement.
Technical Lead
Accenture India
- Delivered financial data transformation and integration services for large banking programs.
- Built an OSS application that improves the CAble Setup box configurable rule-set using Apache Drools to allow market and sales teams to build custom programs for consumers.
- Implemented tracing metrics and observability logging patterns to improve root cause findings.
Senior Software Engineer
Mercer
- Implemented an investment fund management application for tracking the fund's investment and generated graphical illustrations for the fund's performance.
- Built an engineering team to deliver high business outcomes.
- Worked in high-volume fund tracking and investment analytics.
Software Engineer
Wipro
- Managed a newly hired team and worked with a corporate training instructor.
- Created a payment gateway that enabled online payment for a 1-2M threshold daily and daily reconciliation jobs.
- Built an online payment monitoring system that illustrated the payment transaction history for failed, successful, and hold rates.
Experience
FIDO 2
Education
Master's Degree in Artificial Intelligence
Dr. B.R. Ambedkar University - Agra, UP, India
Bachelor's Degree in eCommerce and EDI
Dr. B.R. Ambedkar University - Agra, UP, India
Certifications
AWS AI Practitioner
AWS
AWS Solutions Architect Associate
AWS
Skills
Libraries/APIs
Node.js, React, Stripe, Python API, OpenAI API, Claude API
Tools
AWS IAM, Claude, Claude Code, Terraform, Jenkins, Splunk, RabbitMQ, Grafana, Dynatrace, Amazon Virtual Private Cloud (VPC), Claude Agent SDK, SAP Hybris, Azure MFA
Languages
Java, Java 8, JavaScript, TypeScript, Python, GraphQL, Python 3, Rust
Frameworks
Spring, Spring Boot, AWS Serverless Application Model (SAM), Next.js, OAuth 2, Hibernate
Paradigms
Microservices, Serverless Architecture, Microservices Architecture, Azure DevOps, API Architecture
Platforms
Amazon Web Services (AWS), Apache Kafka, AWS IoT, Azure, Kubernetes, Docker, Bloomreach, Contentful, Oracle, SAP Commerce Cloud V2 (CCV2), AWS ALB, JBoss EAP, Android, iOS, Mobile, Linux
Storage
PostgreSQL, Datadog, Amazon DynamoDB, MongoDB, Amazon S3 (AWS S3)
Industry Expertise
Insurance
Other
APIs, Team Mentoring, AWS Certified Solution Architect, FIDO 2, SaaS, Enterprise Integration Patterns (EIP), eCommerce, Card Payments, API Design, Software Architecture, Payments, Solution Architecture, Technical Leadership, Retrieval-augmented Generation (RAG), CI/CD Pipelines, FastAPI, Agentic Coding, Large Language Models (LLMs), Web Application Design, Billing, Fintech, LangChain, Pinecone, OpenAI, PayPal, GCP, Oracle WMS Cloud, Serverless, IBM Cloud, Neural Networks, Machine Learning, Amazon Bedrock AgentCore, AWS Cloud Security, AWS IAM Identity Center, Identity & Access Management (IAM), Solution Design, AI Architecture, AI Security, Data Migration, Automated Biometric Identification Systems (ABIS), Biometric Security, Sterling Integrator, Google Coud, Platform as a Service (PaaS), Apache Drools, RESTful Web Services, WSO2, SAP ERP
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