About Experience Skills Certs Databricks Fabric Hire Me
Azure · Databricks · Data Engineering

Vishnu
Jonnalagadda

From raw data to real insight. I engineer scalable pipelines, optimise Spark workloads, and help businesses make faster, smarter decisions — on Azure.

~4
Years Exp
10+
Pipelines Built
5x
Certified
// Core Stack
Az
Microsoft Azure
ADF · ADLS · Synapse
Databricks
Unity Catalog · Delta Lake
FABRIC
Microsoft Fabric
Lakehouse · Data Warehouse
SPARK
Apache Spark
PySpark · Optimizations
Py
Python · SQL
ETL · Data Modelling
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Engineering the Flow,
From Ingestion to Insight

Around 3 years building the infrastructure that turns messy data into business clarity, on the Azure ecosystem.

I'm a performance-driven Azure Data Engineer with around 3 years of experience designing and delivering robust data solutions. My work sits at the intersection of engineering precision and business impact.

Currently at Sonata Software as a Digital Engineer, I troubleshoot Azure networking and Databricks workspace issues, diagnose ELT pipeline failures, and deliver fast root-cause analysis for customer workloads — resolving 20+ issues per week.

Previously at SVARAPPS Technologies, I designed 10+ fault-tolerant ETL pipelines, unified fragmented SAP data sources, reduced manual data wrangling by over 75%, and applied performance tuning techniques (partitioning, caching, salting, Z-ordering) that cut pipeline execution time by more than 30%.

I believe great data engineering isn't just technically sound — it has to be aligned with business goals. That's the standard I hold myself to.

🏗️ Pipeline Architecture

Architected 10+ fault-tolerant ETL pipelines on Azure using Data Factory, Databricks, and PySpark, with multi-layer medallion architectures in Delta Lake.

⚡ Spark Optimisation

Reduced pipeline execution time by 30%+ through partitioning, caching, salting, and Z-ordering. Cut manual data wrangling by 75% via unified pipeline design.

🛡️ Networking & Troubleshooting

Resolves 20+ Azure networking and Databricks workspace issues weekly — VNETs, private endpoints, NCC misconfigurations, and CIDR expansions.

🏆 Recognised Contributor

Employee of the Month for three consecutive quarters. Extra Miler Award from client Hitachi Energy at Annual Rewards & Recognition 2024.

Work Experience

A track record of building data infrastructure that delivers measurable business value.

Digital Engineer
Sonata Software Ltd · Bangalore
Aug 2025 — Present
Troubleshoot Azure networking issues impacting Databricks workspaces — VNETs, private endpoints, NCC misconfigurations — resolving 20+ issues per week. Deliver fast root-cause analysis for customer workloads by analysing TCP dumps, diagnosing workspace access failures, cluster provisioning issues, and network-related job disruptions. Diagnose and resolve customer ELT pipeline failures built in PySpark and SQL, improving overall pipeline reliability and performance.
Azure Databricks PySpark Networking Root-Cause Analysis TCP / VNETs
Software Engineer (SE1 → SE2)
SVARAPPS Technologies · Bangalore
Aug 2023 — Aug 2025
Partnered with 5+ cross-functional business users to resolve forecasting inefficiencies caused by data fragmentation across SAP HANA and SAP Legacy systems. Ingested and processed 10,000+ records per day via Azure Data Factory and Azure Data Lake, developing an end-to-end pipeline that cut manual data wrangling by 75%+. Applied PySpark transformations, weighted averages, and custom UDFs. Implemented performance tuning (partitioning, caching, salting, Z-ordering) reducing execution time by 30%+. SPOC for two products, collaborated with a 15-developer team.
Azure Data Factory Databricks PySpark SAP HANA Delta Lake ADLS Gen2
WhatsApp Advisor
Ditto by Finshots · Bangalore
Dec 2022 — Aug 2023
Implemented bot responses within WhatsApp Business Account via REST APIs, streamlining client interactions for 10+ insurance advisors. Conducted 600+ client consultations across a range of insurance products. Refined WhatsApp communication strategy achieving 20% higher client retention and 15% increase in referrals within the first year.
REST APIs WhatsApp Business Insurance Advisory Client Retention

What I Work With

Deep expertise across the modern Azure data stack, with a focus on reliability, performance, and governance.

Cloud & Infrastructure
  • Microsoft Azure
  • Azure Data Lake Storage
  • Azure Synapse Analytics
  • Azure Key Vault
  • Azure DevOps / CI-CD
Data Engineering
  • Azure Data Factory
  • Apache Spark / PySpark
  • Databricks
  • Delta Lake
  • SAP Integration
Governance & Analytics
  • Unity Catalog
  • Delta Sharing
  • Databricks SQL
  • AI/BI Dashboards
  • Genie Spaces
Languages
  • Python
  • SQL (T-SQL, Spark SQL)
  • Scala (working knowledge)
  • Shell / Bash
Architecture Patterns
  • Medallion Architecture
  • Lambda / Kappa
  • ELT / ETL Design
  • Data Modelling
  • Slowly Changing Dimensions
Tools & Practices
  • Git / GitHub
  • Agile / Scrum
  • JIRA
  • Confluence
  • Power BI

Certifications

5 active Microsoft certifications — across Azure, Fabric, and AI.

Academic Background

Engineering foundations from one of India's premier technical universities.

2018 – 2022
B.Tech in Electronics & Communication Engineering
Vellore Institute of Technology, Vellore
CGPA: 8.34 / 10

Let's Build Something
Together

Open to new opportunities, collaborations, or just a conversation about data engineering and the Azure ecosystem.

vishnuvjonnalagadda@gmail.com