Harpreet Singh Dhillon

About Harpreet Singh Dhillon

With over 6.5 years of professional experience, I am a highly skilled software engineer proficient in Java, Python, and Groovy. As a HashiCorp certified Terraform Associate Developer, I excel in creating robust infrastructure as code, utilising DevOps tools like AWS (EC2, CloudWatch, Lambda, S3, CloudFormation), Kubernetes, Docker, Jenkins, CircleCI, Git, Terraform and CDK for Terraform. My hands-on experience includes building ETL processes involving Kafka as a real-time messaging platform, and I am well-versed in observability tools like Prometheus, Kibana, Grafana, Instana, OpsGenie, and New Relic. I am a quick learner and adaptable to change, I bring a proactive approach to every project and thrive in environments that require working on a clean slate.

Experience

1. Senior Engineer

   Iris Software Inc.

   Dec 2024 — Present · Gurugram, IN

   Spearheaded the upgrade of AWS Aurora Postgres Serverless v1 to Serverless v2 using Terraform and snapshots• Designed HLD using Lambda functions implementing serverless architecture for Legacy Document Distributor application running on on-prem server to AWS• Implemented POC on redacting PII data using python and NLP libraries for sanitizing data• Provided Infrastructure Cost estimation covering AWS bedrock agent and guardrails for Gen-AI use-case involving cost estimation based on tokens• Debugged and modernized a legacy SOAP web service, redesigning the application to be cloud native and runnable on AWS Lambda using Python• Implemented Route 53 outbound resolver endpoints to route DNS queries from AWS Glue and Lambda functions to on-premises DNS servers, enabling hostname-based resolution for on-prem databases and services; also configured NACLs and subnet-level network rules to securely allow bidirectional traffic.• Currently overseeing major platform upgrades, including AWS Lambda Python runtime migration from 3.9 → 3.12 and Terraform AWS provider upgrade from v4.37.0 → v5.81.0, while leading a 3-member team through execution.• Enabled team to implement email functionality from AWS Lambda using on-premises Microsoft SMTP server by configuring NACL rules in VPC subnets to allow SMTP server IP and coordinating with network team to permit incoming traffic from AWS CIDR ranges for lower environments (Dev/QA/UAT); leveraged Route 53 outbound resolver endpoint to redirect DNS queries to on-premises DNS server.• Resolved race conditions in unique ID generation from Postgres database during simultaneous multi-file processing by creating a Postgres function set as default for table IDs; enabled Lambda to fetch, increment, and return latest IDs via INSERT/UPDATE queries with RETURNING clause.

Education

• Rajiv Gandhi Prodyogiki Vishwavidyalaya

  Dual Degree, Electronics and Communications Engineering

  2013 — 2018

• St. Montfort school

  PCM with Computer (C++)

  2011 — 2013

Skills

• Image Processing
• Buisness Facilitator
• Business Corespondent
• Matlab
• Project Management
• Microsoft Excel
• Robotics
• Management
• Very-Large-Scale Integration (Vlsi)
• Microsoft Office
• Vlsi
• Embedded Systems
• Customer Service
• Microsoft Word