Sai Kiran Gajjala

Associate

It may sound clichéd - being a software engineer and all - but I love writing code! Ever since writing my first program in C# and manipulating it to give me the results I sought, I have been obsessed with the idea of using software to solve practical problems. Apart from investing my time in understanding and learning how to code better, I like to follow technology trends, and unwind with movies.

Courses and Certifications
Microsoft Certified: Azure Developer Associate

Microsoft Certified: Azure Developer Associate

Microsoft

Issued 24 March 2020 - 24 March 2022

Microsoft Certified: Azure Fundamentals

Microsoft Certified: Azure Fundamentals

Microsoft

Issued 6 April 2019 - No Expiry

MongoDB Certified Associate Developer Exam

MongoDB Certified Associate Developer Exam

MongoDB

Issued 18 November 2020 - No Expiry

MongoDB Professional Services: Certified Partner, Developer

MongoDB Professional Services: Certified Partner, Developer

MongoDB

Issued 01 May 2021 - No Expiry

Google Cloud Certified Professional Cloud Architect

Google Cloud Certified Professional Cloud Architect

Google Cloud Platform

Issued 14 January 2021 - 14 January 2023

CKAD: Certified Kubernetes Application Developer

CKAD: Certified Kubernetes Application Developer

The Linux Foundation

Issued 30 October 2021 - No Expiry

Confluent Certified Developer for Apache Kafka

Confluent Certified Developer for Apache Kafka

Confluent

Issued 17 July 2022 - 17 July 2024

Recognition
  • Received 'Prodigy Award,' as part of Wipro's Product Engineering Services Excellence program
  • Received 'Spot Award' at Siemens all-hands meet
Career Summary

I am a senior full-stack developer, cloud enthusiast, and keen explorer of the cloud technologies.

  • 9 years of experience in developing micro services and cloud applications development with a solid understanding of the Software Development Life Cycle
  • Extensive experienced in developing web services using Rest API, GraphQL API and Apollo GraphQL Federation.
  • Highly skilled in MongoDB in designing document schemas, optimising the queries and developing efficient data access layers.
  • Experienced in Confluent/Kafka, KSqlDB, Schema Registry, and Kafka Connect technologies.
  • Full stack development with Angular, VueJS, NodeJS, NestJS, TypesScript, Java Spring Boot, ASP.NET Core and MongoDB.
  • Extensive experienced in C#, Java, TypeScript, NodeJs, Azure and GCP Cloud technologies.
  • Worked extensively on Microsoft Azure DevOps, CI/CD pipelines and Team Foundation server
  • Proficient in TDD.
  • Good understanding of design principles and design patterns.
  • Extensive experienced with Scrum, Agile and SAFe software development methodologies.
  • Certified Azure, GCP, MongoDB(Associate and Professional), Confluent Kafka and Kubernetes developer.

Education
  • B.E Electronics and Communication Engineering, from BMS Institute of Technology (VTU), Bangalore, India. April 2009 - May 2013
Work Experience
PeerIslands

Associate

May 2019 - present

  • Built a scalable application using TypeScript, Java, VueJS, NodeJS, GraphQL, Azure and MongoDB that increased the Clinic’s productivity.
  • Leveraged Apollo Federation to create super graph on two Apollo GraphQL API services.
  • Designed and developed streaming data pipelines using Confluent/Kafka, KSqlDB, Kafka Streams and Kafka Connect that helped the customer to see the real-time data in the downstream system in just a few milliseconds.
  • Led an agile team of 5 members. Trained and assisted junior developers.
  • Engaged with customers/partners to establish and meet their applications system development needs.
  • Improved database query performance by 60% by fine-tuning queries and optimising MongoDB schemas and indexes.
Siemens Healthineers

Senior Systems Engineer

August 2015 - April 2019

  • Developed an application that archives the healthcare machine logs to the cloud using C# and Azure.
  • Built front-end and back-end applications which helped the customers to improve their onboarding process.
  • Test-driven development of Ultrasound machine’s utility software applications.
  • Involved in the unit and integration testing and resolving issues, defects and queries raised at any phases of the development.
Wipro

Project Engineer

November 2013 - July 2015

  • Part of a team to develop a web application to view the microscopic images on the web browser and tablets.
  • Full stack development with C#, HTML, JavaScript, CSS and SQL Server.
Technical Skills
Backend Technologies
  • NodeJS
  • Java
  • C#
  • Microsoft Azure
  • Web API
  • xUnit
  • GraphQL
  • Azure
  • Unit Testing
  • GCP
  • Kafka / Confluent
  • KSQL
  • Kafka Connect
  • Debezium
  • Change Data Capture
Frontend Technologies
  • Javascript
  • Vue
  • Nuxt
  • Angular
  • Html
  • CSS
  • TypeScript
  • XAML
  • Windows Presentation Foundation
  • Power BI
Frameworks
  • Dot Net
  • Entity Framework
  • ASP Net Core
  • ASP.Net Core
  • Entity Framework Core
  • NestJS
Webservices Tools
  • REST
  • WebSocket
  • ASP Net Core
  • Windows Communication Foundation
  • GraphQL
  • Apollo Federation
Database
  • MongoDB
  • SQL
  • Cosmos DB
  • Couchbase
  • Google cloud storage
  • SQL Server
  • Azure Storage
Devops
  • Azure DevOps
  • Team Foundation Server
  • HEML Chars
  • Git Lab
  • SVN
  • Terraform
Technical Domains
  • MVC
  • MVVM
  • Kubernetes