const()
function()
async()
await()
return()
SYSTEM_STATUS: OPERATIONALLOCATION: GURGAON, IN
15:33:0412/10/2025
terminal — bash — 120×40
$ cat /proc/engineer/profile
NAME:AVIRAL HARSH
ROLE:Software Development Engineer-1
COMPANY:Nielsen [CURRENT]
EXPERIENCE:Amazon → Rigi → Nielsen
$
PROFESSIONAL_SUMMARY
→ Distributed Systems Architect specializing in petabyte-scale data platforms
→ Expert in building high-throughput microservices with 99.9%+ uptime
→ Proven track record: 42% performance gains, $7K monthly cost savings
→ Full-stack polyglot engineer across 8+ languages and 40+ technologies
→ AI/ML practitioner with production RAG systems and fraud detection models
🏢
COMPANIES
3
Top Tech Firms
IMPACT
42%
Performance Gain
📊
SCALE
8TB
Daily Processing
RELIABILITY
99.95%
System Uptime
POLYGLOT
Java•Scala•Python•Go
BIG_DATA
Spark•Kafka•Druid
CLOUD_NATIVE
AWS•K8s•Docker
SCROLL_TO_EXPLORE
PROFILE_OVERVIEW

ABOUT_ME

$ cat profile.txt

Polyglot Software Engineer specializing in building distributed data platforms at scale. Currently architecting petabyte-scale systems at Nielsen using Apache Spark, Airflow, and Druid.

Professional journey includes impactful roles at Amazon (optimizing payment gateways for 30M+ daily transactions) and Rigi (building ML-based fraud detection serving 20K requests/sec).

Proven track record of delivering measurable business impact: 42% performance improvements, $7K monthly cost savings, and 99.9%+ uptime across production environments.

Expertise spans backend microservices, big data processing, cloud infrastructure, and full-stack development.

EDUCATION
BITS Pilani, Hyderabad
B.E. Electrical & Electronics, M.Sc. Biological Sciences
2019 - 2024GPA: 7.6/10DUAL_DEGREE
COMPANIES
3
Nielsen•Rigi•Amazon
EXPERIENCE
2.5yr
Professional
PROJECTS
15+
Production Apps
IMPACT
$10K
Monthly Savings
CURRENT_STATUS
AVAILABLE_FOR_OPPORTUNITIES
PROFESSIONAL_EXPERIENCE

WORK_HISTORY

NIELSEN

FULL_TIME
Software Development Engineer-1
2024.07 → PRESENT6moGURGAON_IN
RUNTIME
42%
Faster
SAVINGS
$7K
/month
UPTIME
99.95%
SLA
DATA
8TB
/day

DISTRIBUTED_ETL_PIPELINE

Apache SparkScalaAirflowPythonSQL

Engineered distributed ETL pipelines processing 8TB+ daily data. Optimized broadcast joins and partition pruning, reducing runtime by 42% and saving 18 compute hours/day.

EVENT_DRIVEN_MICROSERVICES

JavaSpring BootDruidAWS

Built event-driven microservices achieving 99.95% uptime with sub-250ms latency for real-time data ingestion handling 5TB+ across 8 production regions.

OLAP_QUERY_OPTIMIZATION

DruidTrinoPostgreSQLS3

Optimized Druid OLAP queries by 2.8x through segment optimization, query vectorization, and result caching. Implemented Trino federated queries reducing cross-system latency by 35%.

CLOUD_COST_OPTIMIZATION

AWSEC2RDSS3Spot Instances

Reduced AWS costs by $7K/month through EC2 rightsizing, RDS optimization, S3 lifecycle policies, and Spot instance implementation.

WORKFLOW_ORCHESTRATION

AirflowDAGDynamic Task Mapping

Orchestrated 280+ Airflow DAGs with dynamic task mapping and autoscaling, achieving 99.7% success rate.

RIGI

INTERNSHIP
Software Development Engineer Intern
2024.01 → 2024.066moBENGALURU_IN
REVENUE
$81K
ARR
ML_ACC
89%
Precision
SPEED
7.5x
Faster
LOAD
-58%
Time

AMAZON

INTERNSHIP
Software Development Engineer Intern
2023.07 → 2023.126moCHENNAI_IN
API_OPT
35%
Reduction
LATENCY
165ms
p95
SCALE
30M
/day
TESTS
94%
Coverage
TECHNICAL_STACK

SKILL_MATRIX

57
TOTAL_SKILLS
7
CATEGORIES
95%
AVG_PROFICIENCY
🤖

AI_ML_&_DATA_SCIENCE

[10 technologies]
95%
EXPERT
LangChain
1yr95%
BEGINNERINTERMEDIATEEXPERT
RAG (Retrieval-Augmented Gen)
1yr95%
BEGINNERINTERMEDIATEEXPERT
PyTorch
2yrs90%
BEGINNERINTERMEDIATEEXPERT
TensorFlow
2yrs90%
BEGINNERINTERMEDIATEEXPERT
Transformers/BERT/GPT
1yr90%
BEGINNERINTERMEDIATEEXPERT
XGBoost/LightGBM
2yrs95%
BEGINNERINTERMEDIATEEXPERT
LSTM/RNN
2yrs90%
BEGINNERINTERMEDIATEEXPERT
scikit-learn
3yrs95%
BEGINNERINTERMEDIATEEXPERT
Vector Databases (FAISS/Pinecone)
1yr90%
BEGINNERINTERMEDIATEEXPERT
Ollama/LLM Fine-tuning
1yr90%
BEGINNERINTERMEDIATEEXPERT
STACK_SUMMARY

Full-stack polyglot engineer with deep expertise across 57 technologies spanning modern software development.

AI/ML Specialist: Production experience with LangChain, RAG systems, LLM fine-tuning, and vector databases. Built fraud detection models and AI-powered applications.

Big Data Expert: Architected petabyte-scale data platforms using Apache Spark, Kafka, Airflow, Druid processing 8TB+ daily with 99.95% uptime.

Cloud-Native Developer: Extensive AWS, Docker, Kubernetes experience building event-driven microservices and serverless architectures.

Modern Frontend: Expert in React, Next.js 14, TypeScript with Server Components, SSR, and advanced state management.

5+
YEARS_EXP
15+
PROJECTS
42%
IMPACT
PORTFOLIO_PROJECTS

PROJECT_ARCHIVE

[01]

AI_STUDY_ASSISTANT

RAG_PLATFORMPRODUCTIONai-study-assistant
45
12

Production-grade LangChain + FAISS + Ollama LLM system processing 5000+ page PDFs with 60x performance gain via intelligent caching. Integrated real-time web search and contextual Q&A capabilities.

PERFORMANCE
60x
faster than baseline
CAPACITY
5000+
pages processed
RESPONSE
<2s
query latency
LangChainFAISSOllamaPythonRAGVector DB
[02]

QUANTUM_DECISION_INTELLIGENCE

OPTIMIZATION_FRAMEWORKRESEARCHquantum-decision-simulator
28
8

Algorithmic framework leveraging quantum principles, Monte Carlo simulations, and probabilistic inference for multi-objective optimization in complex decision analysis scenarios.

ACCURACY
96%
decision precision
SCENARIOS
1000+
simulations/sec
DIMENSIONS
10+
optimization vars
PythonQuantum ComputingMonte CarloNumPySciPy
[03]

REALTIME_FRAUD_DETECTION

ML_PIPELINEPRODUCTIONfraud-detection-ml
67
23

Ensemble ML pipeline using XGBoost and Neural Networks achieving 96% AUC-ROC. Deployed on AWS Lambda with <50ms inference latency for real-time fraud detection at scale.

AUC_ROC
96%
model accuracy
LATENCY
<50ms
inference time
THROUGHPUT
10K
predictions/sec
XGBoostNeural NetworksAWS LambdaPythonscikit-learn
[04]

AI_RESUME_BUILDER

SAAS_PLATFORMPRODUCTIONai-resume-builder
89
34

Full-stack SaaS with React, FastAPI, and Ollama LLM featuring real-time LaTeX compilation, AI-powered resume optimization, ATS scoring, and automated cover letter generation with <2s response time.

RESPONSE
<2s
generation time
ATS_SCORE
95+
average score
USERS
500+
active users
ReactFastAPIOllamaLaTeXPostgreSQLRedis
CONTACT_INFORMATION

GET_IN_TOUCH

Currently open to new opportunities and interesting projects.
Feel free to reach out for collaborations or just to connect.

$ ./initiate_collaboration.sh

LET'S BUILD SOMETHING AMAZING

Whether you have a project in mind, want to discuss opportunities, or just want to connect— I'm always interested in hearing about new challenges and collaborations.