
Neeraj Sehgal
Verified Expert in Engineering
Solutions Architect and AI Developer
London, United Kingdom
Toptal member since August 11, 2026
Neeraj has spent 20 years in enterprise technology building cutting-edge solutions across retail, logistics, travel, and manufacturing. He is an AI technical leader who has built an AI-powered migration platform to migrate 70+ services to GCP, reducing manual effort by 80%, and an RAG-based content assistant deployed enterprise-wide via Microsoft Teams. At Saber, Neeraj designed a multi-agent AI platform with integrations to downstream systems, reducing documentation and planning effort by 50%.
Portfolio
Experience
- Spring Boot - 13 years
- Java - 12 years
- Microservices - 5 years
- RAG Pipelines - 4 years
- Agentic AI - 4 years
- AI Agents - 4 years
- LangChain - 3 years
- Azure AI Studio - 2 years
Preferred Environment
Google Cloud Platform (GCP), Azure, Agentic AI, RAG Pipelines, Python, Java, REST, AI Agents, React, TOGAF
The most amazing...
...thing I've built is IKEA's automated migration of 70+ services to GCP, cutting 80% of the manual effort today and saving 70 MDs every three months thereafter.
Work Experience
AI, Integrations, and LCM Lead
Inter IKEA Group
- Owned end-to-end delivery of 70+ Spring Boot services from OpenShift to GCP through an AI-powered migration platform, automated and codified seven library upgrade paths using Python with a validation harness committing only test-improving changes.
- Reduced manual effort per service from four days to 10 minutes for all 70 services simultaneously, saving a minimum of approximately 70 person-days of effort every three months going forward.
- Architected and delivered a RAG pipeline for the enterprise assistant deployed to all Inter IKEA co-workers via Microsoft Teams, using Azure AI Search, Azure OpenAI, and a three-layer evaluation framework.
- Implemented cosine similarity deduplication pre-ingestion to prevent vector index pollution, self-identifying and resolving the problem before it reached production.
- Spearheaded platform selection for 160+ integrations by evaluating four platforms, driving the architecture decision with enterprise architects.
- Framed Oracle FMW 14c as a deliberate stepping stone to the strategic Hybrid Platform and dynamically resequenced five-phased go-lives in response to changes, server provisioning delays, and Oracle patch updates while holding the deadline.
- Authored a migration strategy, testing strategy, inter-team process design, and Git branching model for an eight-person multi-vendor team running concurrent programs without conflicts.
Senior Engineer in AI and Order Management
Sabre
- Delivered over 20 features across a Java and Spring Boot OMS platform for a new low-cost-carrier product on GCP, supporting 6,000 TPS under real transaction volume.
- Diagnosed and improved a production performance bottleneck by restructuring the execution strategy and analyzed and resolved several production defects in a complex asynchronous distributed order-processing system.
- Owned the agent communication layer, back-end services, and integrations across GitHub, Jira, Rally, and 12 REST API integrations across PNR booking, ancillaries, and multiple carriers, delivering a 50% reduction in manual workflow effort across all.
- Built a Python agentic platform for automated information extraction from IBM mainframe codebases, including HLASM, COBOL, JCL, and deployed multi-region on GCP via Terraform.
Architect and Lead
Flo Group (Acquired by Accenture)
- Served as an integration and solution architecture across Flo Group's client portfolio, including Stora Enso, Mazda, Lufthansa, Heineken, and IKEA.
- Acted as a technical lead for enterprise pre-sales pursuits by presenting architecture and estimates directly to clients.
- Built the Flo Group's center of excellence with the CEO's buy-in.
- Delivered in-person training workshops in India to enable the AMS team to handle live P1-P4 incidents independently within three weeks of onboarding.
Development Lead for Integrations
IKEA
- Built IKEA's first prod solution on the hybrid integration platform without documentation or precedent. It is event-driven, processing 200,000 messages per hour, and was designed using OAuth 2.0 before IKEA's security team had formal guidance.
- Designed and built the advanced shipment visibility and ocean shipment visibility solutions with an estimated €2 million annual savings.
- Developed reusable libraries adopted across 50% of the integration estate, i.e., approximately 35 repositories.
- Hired and trained a seven-person support team operational within six weeks after winning a competitive AMS bid against the incumbent vendor, and designed the P1 – P4 operating model.
- Implemented regulatory compliance requirements through the integration layer, including SOLAS VGM, Russian marking, Importer Security Filing, and GDPR data flow.
Strategic Architect
Carphone Warehouse (through Accenture)
- Governed horizontal architecture across three concurrent releases while working alongside IBM Sterling-based ERP applications as a cross-release strategic architect appointed by Accenture.
- Applied the Gartner TIME model to 23 applications, two of which were decommissioned, and evaluated five API management platforms before deciding against purchase.
- Presented all recommendations to domain architects and CTO-level stakeholders who approved them.
- Enforced architecture principles across multiple vendor teams through daily Technical Design Authority discussions, preventing brand-specific components and ensuring cross-brand applicability.
Integration Architect
Argos (through Accenture)
- Owned integration architecture across a large-scale retail estate of 200 – 600 integrations, ensuring release integrity across concurrent development streams at one of the UK's largest omnichannel retailers.
- Created integration architecture, patterns, and standards covering order management, inventory, fulfillment, and supplier integrations and shared with cross teams.
- Worked with several multi-vendor delivery teams and stakeholders to align using architectural views—physical, conceptual, and logical—on integration approaches, resolve design conflicts, and agree on delivery timelines.
Solutions Architect | Development Lead for Integrations
Balfour Beatty
- Designed the integration architecture around the order management module and order-to-cash processes on a large-scale Oracle EBS transformation with 250+ secure integrations connecting order, finance, and procurement systems across 13 OpCos.
- Provided technical leadership across a 12-person multi-vendor delivery team, setting standards, resolving design conflicts, and maintaining delivery momentum across concurrent workstreams.
- Designed and delivered a two-way secure IBM MQ-based messaging architecture for reliable, transactional integration between Oracle EBS and peripheral business systems.
- Maintained zero critical integration defects post go-live across all 250+ delivered interfaces throughout the program.
Integration and Web Development Roles
L&T Infotech (now LTM)
- Contributed to several integration and web application projects across Statoil Norway, American Axle USA, Allvac USA, and OASIS Investment Company Dubai.
- Led a team of 30 resources at Statoil Norway indirectly, designing and developing APIs, resolving technical conflicts, and delivering successful enterprise integration solutions.
- Architected the first-ever web app solution on Oracle ADF with no precedence, winning three further projects from the American Axle and Manufacturing client.
Experience
AI-powered Microservice Migration Solution
I integrated an AI diagnostic engine with a validation harness, applied test fixes to a temporary branch, and executed the full test suite, committing changes only if the pass rate genuinely improved.
As a result, I reduced per-service effort from four days of manual work to 10 minutes for all 72, simultaneously demonstrating a 70% reduction in effort.
The same solution will continue to be used for future library upgrades, saving 70 person-days of effort whenever the next library upgrade is needed, approximately every three months.
RAG Pipeline for Enterprise Content Assistant
I designed and delivered a RAG pipeline for the content assistant, with full document ingestion of Confluence pages and policy documents, chunking, embedding via Azure OpenAI Text Embedding model, and indexing in Azure AI Search with vector retrieval.
I also identified and resolved a near-duplicate document problem pre-ingestion using a cosine similarity check, preventing vector index pollution and resource wastage. I evaluated the retrieval output using RAGAs metrics, Azure AI default evaluation framework with distributed traces, and a curated golden dataset scored against actual responses.
Education
Bachelor's Degree in Information Technology
Kurukshetra University - Thanesar, India
Certifications
Microsoft Azure Architect Technologies (AZ-303)
Microsoft
AWS Solutions Architect – Associate
Amazon Web Services
TOGAF 9.1
The Open Group
Skills
Libraries/APIs
Java Message Service (JMS), React, Node.js, SOAP APIs
Tools
Terraform, Helm, Jenkins, Apache Maven, MQTT, Oracle SOA Suite, Google Kubernetes Engine (GKE), SonarQube, Oracle E-Business Suite (EBS) R12, JDeveloper, IBM MQ, Cucumber, IntelliJ IDEA, Oracle Transportation Management (OTM), Apache JMeter, Bazel, Azure Search, Azure OpenAI Service, Git, Claude, GitHub
Languages
Java, Python, JavaScript, SQL, XSLT
Frameworks
Spring Boot, LangGraph, TOGAF, Oracle ADF, JUnit
Paradigms
REST, Test-driven Development (TDD), Microservices, Model Context Protocol (MCP)
Platforms
Azure, Azure AI Studio, OpenShift, Google Cloud Platform (GCP), Azure AI Search, AWS IoT, Docker, Kubernetes, IBM WebSphere, Cloud Run, Vertex AI, AWS Lambda, Jakarta EE (Java EE or J2EE), Confluent Kafka, Azure Functions
Storage
Google Cloud Spanner, Amazon S3 (AWS S3), PostgreSQL
Other
RAG Pipelines, Stakeholder Management, Enterprise Architecture, Solution Architecture, Integrations, Technical Leadership, Cloud Platforms, Architecture, Artificial Intelligence (AI), Agentic Workflow Design, OpenAI, RAG Systems, APIs, Agentic AI, Multi-agent Systems, LLM Orchestration, AI Agents, LangChain, Order Management, Supply Chain, Agentic RAG Systems, System Architecture, Full-stack Development, Large Language Models (LLMs), Oracle EBS, GitHub Actions, SOAP, Kafka, Functions, EC2, Amazon RDS, FastAPI, Veracode, Information Technology, Software Development Lifecycle (SDLC), AWS Certified Solution Architect, JDE, API Management, Springbot, OAuth, ChromaDB, LLM Agents, Evaluation, Multimodal GenAI, Vectors
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