Siddhartha Chandra

Senior technologist.

Backend & Data · Individual Contributor

15+ years across backend engineering, data science, AI-oriented systems, teaching, and startup leadership. Currently based in Berlin.

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Focus Areas

Backend Engineering Python, Scala, Kotlin, C/C++, Java, SQL. Springboot, Flask, REST APIs, Docker, Spark, Kafka, AWS, Hadoop.
Data Science & AI Applied ML, NLP, Analytics, Scalyr, PostgreSQL, MongoDB, Neo4j, Airflow.
Technical Leadership Strategic Partnerships, Tech-arm Setup, Mentorship, Team Coaching, Conflict Resolution, Managed Fund (~1.3M €).
Product & Strategy Entrepreneurship, Story-telling, Problem Solving, Teaching, EdTech product development.

Experience

Sr. IC (Backend & Data) Zalando SE  ·  May 2025 – Present  ·  Berlin
  • Architected a cross-team system for enabling Multi-carrier injection hub in Logistics
  • Evolved system for improved fulfilment offering, that resulted in increasing avg. daily shipping by ~120 for Netherlands & Sweden
  • Architected a bridge application (tier-2) that consolidates context for fulfilment planning
Sr. Data Science Engineer Collective[i]  ·  Oct 2016 – Apr 2022  ·  US
  • Created a daily data deduplication pipeline for ~10M entities unlocking a speed-gain of 10X
  • Co-authored system for predicting win probability, close time & customer revenue based on a deal pipeline for sales-representatives of B2B clients
  • Built strong engineering foundations for the Data science team, mentored developers, added dashboard monitoring and played a critical role in legacy code transitions & technical-debt payoffs
Chief Executive Officer SPTBI (Tech Incubator)  ·  May 2024 – May 2025
  • Supported ~60 tech startups with a team of 6
  • 5 Strategic partnerships; Tech-arm setup
  • Managed fund: ~1.3M €
Data Scientist x.ai  ·  Oct 2014 – Sep 2016  ·  US
  • Built a crf-based email parser that outperformed mailgun by ~15% on F1 for signature detection
  • Creator & keeper of dashboards for measuring annotation quality, model performance & KPI's
Professor of Practice Sardar Patel Institute of Technology  ·  Aug 2023 – May 2025
  • Teaching: Data Structures (undergrad), Business Analytics (undergrad); Adv Algorithms (MTech)
  • Mentorship: Advised 14 technical project groups
  • Designed revised syllabus of Data Structures as the convenor, along with 2 professors
  • Papers published in international conferences: 5+
Co-founder Sixladders  ·  June 2024
  • Established architecture and mentored developers in building a suite of educational offerings for students
  • Projections for 2026: yearly revenue: 0.43M €, MAU: 300; DAU: 100
Sr. Systems Engineer Infosys Ltd  ·  Sep 2008 – May 2012
  • Part of team recognised for execution excellence at Org level for implementing i8n for a client

Select Research & Publications

Virtual Fitting Advanced AI-driven solutions for Virtual fitting
Accessibility Enhancing accessibility for people with disabilities
Creditworthiness Hybrid Optimisation & Explainability-Driven Framework for Creditworthiness Assessment
Dermatological AI Wavelet-Enhanced Transformer Architecture for Dermatological Image Analysis
Risk Prediction Comparative Analysis of Optimized Machine Learning and Deep Learning Models for Credit Risk Prediction

Education

MS in Computer Science Columbia University, NY  ·  Sep 2013 - May 2014
BE in Information Technology Sardar Patel College of Engg, Mumbai University, Mumbai  ·  Aug 2004 - May 2008