Hello, I'm
Sandeep Rajan
Head of Technology & Solution Architect22+ years building enterprise software — from warehouse management systems and microservices platforms to AI-driven analytics — across logistics, telecom, and healthcare.
Let's Connect
22+ years building enterprise software — from warehouse management systems and microservices platforms to AI-driven analytics — across logistics, telecom, and healthcare.
Let's Connect
Over twenty-two years of hands-on technical experience across specialized hardware, networking, and software engineering, with deep integration of AI into enterprise platforms. I've built ground-up solutions for warehouse management and carry strong knowledge of supply chain and logistics technology — leading cross-functional engineering teams to deliver enterprise-grade platforms across logistics, telecom, and healthcare.
My path here wasn't linear by design so much as by depth: fifteen years at Spice Digital took me from developer to lead to Solution Architect, building SOA and message-broker platforms — including an IoT firewall product — for enterprise and telecom customers, and eventually leading a team of 25+ developers on that architecture. From there I moved into warehouse management at Advatix, building a WMS from MVP through carrier and e-commerce integrations for clients across the US, before a short stint as CTO of an AI-driven healthcare platform sharpened how I think about applying AI to real operational systems rather than treating it as a bolt-on.
Today I'm Head of Technology at Apollo Supply Chain, where I lead VisionWare+ — an AI-powered analytics and 3D visualization platform that turns raw warehouse data into models teams can actually act on. That's also where most of what I write about on this site comes from: what changes when AI tooling meets systems where a bug has physical, not just financial, consequences.
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Domain, application, infrastructure, and interfaces stay separated so business logic doesn't end up wired to a specific database or framework. It costs more upfront structure; it pays for itself the first time you swap a message broker or a persistence layer without touching domain code.
APIs get an OpenAPI or Protobuf definition before implementation starts, not after. It forces the hard conversations about a service's boundary early, when they're cheap, instead of during integration testing, when they're not.
Business rules live in the domain layer, not scattered across service classes that just move data around. If a concept matters to the business, it's a first-class type with real behavior, not a DTO with getters and setters.
Every pattern here is a trade-off, not a religion. I'll flag over-engineering as readily as missing test coverage — the goal is a system the team can actually operate at 2 a.m., not an architecture diagram that wins design reviews.
Hexagonal and DDD-driven architecture, event-driven and microservices design for enterprise-grade platforms.
15+ years building high-performance backends with Java, Spring, and SOA/microservices architectures.
Ground-up WMS platforms and carrier integrations for e-commerce and logistics operations.
Embedding AI and predictive analytics into operational platforms, from warehouse visualization to fraud detection.
Agile delivery across cross-functional teams, from BRD/FRD through production rollout.
Building and leading engineering teams of 25+ developers across SOA and microservices programs.
Apollo Supply Chain · An AI-powered analytics and 3D visualization platform built from the ground up, turning raw warehouse data into interactive 3D models and graphs that operations teams can act on directly rather than static reports. In active development since December 2023.
Xpdel US, Zico US, 3sprouts · A warehouse management system built from an MVP up through production scale over four years, with integrations across major e-commerce platforms and shipping carriers for three US clients.
Indian Telecom Operator · A SIGTRAN-based solution verifying the authenticity of mobile equipment identity against the MAP protocol, closing a gap that let cloned or blacklisted devices onto the network.
Leading Telecom Operator · Predictive analytics and algorithmic scoring built to protect the operator's highest-ARPU customers from competitor poaching — distinguishing genuine competitor outreach from spam calls in real time and blocking the latter before they reached the elite customer base.
Himachal Pradesh University · 2004
Himachal Pradesh University · 2001
Aptech · Since 1999
Scrum Alliance · Since 2019
Years Experience
Projects Delivered
Team Members Led
Industries: Logistics, Telecom, Healthcare
Apollo Supply Chain
Dec 2023 - PresentLeading in-house initiatives for modernization of warehouse processes and digitization. Spearheaded VisionWare+, an AI-powered analytics and 3D visualization platform that transforms warehouse data into intuitive, interactive models.
Advatix
Jul 2021 - Dec 2023Specialized in software solutions for WMS and carrier integrations. Proficient in Java and microservices with a track record of delivering high-quality products — skilled in team leadership, client satisfaction, and problem-solving.
Advatix
Dec 2019 - Apr 2021Empowered three project teams for backend technical development in an Agile environment. Collaborated with business users, technical teams, DBAs, and testing teams on kickoff meetings, joint application design, and requirements validation — producing BRDs, FRDs, and user mockups.
Calvry
Aug 2019 - Dec 2019Led technology for an AI-driven healthcare and wellness platform, including an AI-based food recognition app that intelligently detects food items and surfaces nutritional values such as calories, fat, fibre, protein, and vitamins.
Spice Digital
Aug 2004 - Jul 2019 · 15 yearsProgressed from Developer to Lead to Solution Architect over 15 years, delivering complex mobile solutions — voice, data, and SMS platforms — for enterprise and telco customers, including an IoT firewall (p2p voice guard). Led a team of 25+ developers on SOA-based, message-broker architectures decoupling legacy monoliths.
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Read article →Open to conversations on technology leadership, solution architecture, and supply chain innovation.