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Ivan V.
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Ivan V.

Expert-Vetted Data Engineer & Architect | Java/Scala, Python, GCP, AWS

I help businesses leverage BigData systems by architecting and delivering AI, data, event driven cloud and on-premise solutions for the last 15 years. last big project highlights 🚀 : 🔹 decreased billing for 600% 🔹 built automated pipeline for processing 2Tb of data ad load in ElasticSearch in 3h with processing cost less than 100$ Experienced as a Solution Architect, Data Engineer, Software Engineer and DevOps, delivering scalable, cloud-native solutions. I specialize in architecting and building robust, efficient cloud infrastructures (AWS, GCP, Azure) combined with reliable ETL/ELT data pipelines (batch and streaming). Certified in GCP, with Java, Scala, and Python, focused on solving complex big data challenges for real-world business success. 🔹 Core Expertise: • Big Data Engineering: Spark, Hadoop, Kafka, Apache Beam, Airflow • Cloud Architecture: GCP Certified, AWS experienced • ETL & Data Pipelines: Batch and real-time streaming • Microservices & Backend Development: Java, Scala, Python, Node.js • DevOps & Automation: Kubernetes, Terraform, CI/CD 🔹 Why Work with Me? • Proven track record with enterprise clients. • Strong understanding of key business metrics (ROI, ARPU, LTV). • Transparent communication, reliable deliveries, and a partnership-focused approach. 🛠 Tech Stack Overview: 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬: ♨️ Java/Scala: Spring, Spring Boot | Play Framework | Akka | Project Reactor | Netty 🐍 Python: Pandas | NumPy | Flask | Django | DuckDB ⚡️JS/TypeScript: Node.js | NestJS 🚲 Lua / Shell scripting 🛴 Serverless: GCP Cloud Functions | Cloud Run | Firebase | Supabase | AWS Lambda | Cloudflare workers 𝐃𝐚𝐭𝐚 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬: 🚢 Spark, Hadoop, Hive / GCP Dataproc / AWS EMR, Glue / R2 Data Catalog / Iceberg 💌 Kafka / PubSub / RabbitMQ / Cloudflare Pipelines 🚀 Redis / Memorystore 🚚 Cassandra, ScyllaDB, ClickHouse, MongoDB, ElasticSearch, Firestore 🗄 BigQuery / Redshift 🚜 PostgreSQL, Supabase, TimescaleDB, MySQL, Oracle 🗑 GCS / S3 / Cloudflare R2 🗞 Avro / Parquet / Protobuf / CSV / JSONL 🚤 Apache Beam / Flink / GCP Dataflow / Kafka Streams / Redis Streams 🎡 Apache Airflow / GCP Composer / Dagster / AWS MWAA 🏠 Dataform / dbt | Fivetran / Airbite 🏭 migration from Informatica, Talend 𝐂𝐥𝐨𝐮𝐝 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: ☁️ GCP, AWS, Cloudflare 𝐓𝐨𝐨𝐥𝐬: 🏗 Cloud Build / CircleCI / Github Actions / Jenkins 🗺 Nginx / Envoy / GCP Load Balancer / GCP API Gateway 🎛 Terraform 🐳 Docker 🐳 Kubernetes / GKE / Swarm 📊 UML / Jira / Confluence / Notion / Miro / Lucidchart Technical Philosophy: Guided by principles such as Occam's razor (KISS), DRY, SOLID, WORA, YAGNI, and "Let it crash," I focus on delivering real business results with future growth potential built on a strong foundation. Let’s talk about your next project!

🇺🇦Kyiv, Ukraine$70/hr100% JSS4.89 (35)Since Sep 2012

Earnings and projects

MRR
$13k

Last 6 months ÷ 6

World#646 / 412k
🇺🇦Country#50 / 14.3k
Revenue, last 30 days
$17k

Last 6 months: $80k

World#419 / 412k
🇺🇦Country#24 / 14.3k
Total earnings
$222k

Billed in all: $238k

World#12,992 / 412k
🇺🇦Country#1,050 / 14.3k
Per project
$4.1k

$16k in the last 6 months

World#41,952 / 412k
🇺🇦Country#2,431 / 14.3k
Projects, last 6 months
5
20% fixed80% hourly
World#41,746 / 412k
🇺🇦Country#1,797 / 14.3k
Projects in all
54

Across 64 contracts

28% fixed72% hourly
World#56,667 / 412k
🇺🇦Country#2,640 / 14.3k

Earnings, last 30 days

$238k+$16.9k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$220k$230k$240kOct 8Oct 23Nov 7

Skill rankings: #1 in 3 skills of 17

Rarest: top 0.18% in Microservice, of 2,217. Ranked by MRR among everyone on Upwork with the skill.

  1. 1Reactive Programming95 freelancers · 🇺🇦 #1Top 1%
  2. 1Akka33 freelancers · 🇺🇦 #1Top 3%
  3. 1Apache Beam17 freelancers · 🇺🇦 #1Top 6%
  4. 2Apache Cassandra82 freelancers · 🇺🇦 #1Top 2%
  5. 2Google Dataflow36 freelancers · 🇺🇦 #1Top 6%
  6. 3Apache Kafka981 freelancers · 🇺🇦 #1Top 0.31%
  7. 3Apache Spark467 freelancers · 🇺🇦 #2Top 0.64%
  8. 3Scala215 freelancers · 🇺🇦 #1Top 1%