Sanjoy Biswas
Peterborough
Summary
Senior Data Engineer, Architect, and Modeller with 10+ years of experience delivering
cloud-native, AI-enabled, and regulatory-compliant data platforms. Proven expert in
Azure, Databricks, Snowflake, and Oracle (including Graph DB and data warehousing),
with deep capabilities in semantic modelling (Neo4j, SKOS/OWL), DCAM/DAMA-aligned
governance, and rule-based data quality frameworks. Delivered £90Bn+ in asset
migrations and 200M+ customer records across complex financial ecosystems. Skilled
in building scalable ETL/ELT pipelines, deploying ML models (churn, defect prediction),
and enabling analytics at scale. A trusted data delivery champion who bridges strategy
with execution to deliver high-impact, business-aligned solutions.
Overview
13
13
years of professional experience
1
1
Certification
Work history
Migration data analyst || Data Engineer ||
Diligenta
Peterborough, Cambridgeshire
2022.11 - Current
- Project: Standard Life Pensions
- Executed end-to-end data migration from legacy systems to Azure SQL Database and Synapse Analytics using Azure Data Factory and Dataflows.
- Migrated 2 million legacy (Annuity+Pension )policies with >99 % reconciliation success.
- Developed 100+ modular pipelines using SSID, ODI,PL/SQL and ML jobs to execute whole operations.
- Improved end to end migration timing from 48 hrs to 17 hrs.
Technical Lead || Telecom Sector
Tata Consultancy services Ltd
Kolkata , India
2017.07 - 2022.09
- Project: Bharat Sanchar Nigam limited (BSNL)
- Migrated legacy CDOT systems to Fibre , DSL , ADSL based solutions with more than 10 million customers.
- Maintained and implemented modern solutions in Data Centre operations to achieve >99% system availability.
- Integrated complex and different IT systems like CRM, Billing etc using Oracle Fusion middleware (Oracle SOA) to ensure seamless IT operations and real time analysis with morethan
- Tuned numerous queries and auto mated manual process to achieve overall 40% faster operations.
IT support engineer
Tata Consultancy services Ltd
Hyderabad , India
2013.03 - 2017.05
- Project: Tata Telecommunication
- Developed code using Java EE, Spring,Java script asper client requirements.
- Developed shell script to monitor server health and report generation.
- Solved complex technical problems to ensure optimal performance of IT infrastructure.
- Monitored and performed hardware and software upgrades to network servers, including operating systems and applications.
Education
Bachelor of Technology - Electrical Engineering
West Bengal University of Technology
Kolkata 07.2012
Skills
Data architecture
Data Lake/ OLTP/OLAP/ Databricks/Synapse/
Azure/Oracle/Hybrid Architecture
Data Engineering & Pipelines
ETL/ELT/ODI/ Oracle SOA
Language & Database
Java/PLSQL/Python (Pandas, py spark)/SQL/Azure SQL
Languages
English
Proficient
C2
Affiliations
Cricket training
Certification
Oracle Databases Administration
Microsoft Azure (DP 203)
Timeline
Migration data analyst || Data Engineer ||
Diligenta
2022.11 - Current
Technical Lead || Telecom Sector
Tata Consultancy services Ltd
2017.07 - 2022.09
IT support engineer
Tata Consultancy services Ltd
2013.03 - 2017.05
Bachelor of Technology - Electrical Engineering
West Bengal University of Technology