Irina Pundik

• Returned from parental leave to the Alerts team, while continuing key billing responsibilities.
• Built backend support for AI-powered RCA workflows, triggering support calls on critical alerts.
• Implemented subscription cancellation flows, including webhook logic and Slack updates.
• Created a one-time script using OpenSearch + REST APIs to analyze account REST patterns.
• Enabled bulk alert emails to all users in affected accounts.
• Upgraded Israeli VAT logic to support legal tax changes.
• Modernized Microsoft Teams integration for alerting endpoints.
• Continued backend improvements in billing microservices (entitlements, upgrades, cleanup).

• Led a team of 5 developers (hands-on) responsible for the core usage & billing platform.
• Implemented automatic overage payment flow, generating over $1M in revenue.
• Migrated Israeli tax configuration logic based on tax law changes.
• Delivered new "MicrosoftTeams" integration for alerts.
• Enabled alerts to email all users at once (vs. one-by-one dispatch).
• Created coupon infrastructure with advanced discount support and Stripe integration.
• Designed and built subscription cancellation backend flow.
• Developed full backend support for current subscription upgrades (automated and semi-manual).
• Helped synchronize account data across several internal finance systems.
• Created a one-time OpenSearch-based script to analyze account usage and REST call patterns.

• Integrated advanced filtering into Logzio steaming tool for real-time log exploration.
• Created demo log generation flows with auto-generated dashboards for trial users.
• Designed and built the Alice Slack bot (Node.js) supporting multi-account Slack workspaces.
• Implemented end-to-end purchase flow for new accounts (automated & semi-manual paths).
• Developed logic for calculating dynamic pricing tiers instead of static plans.
• Migrated usage tracking from index estimation to ingestion-based metering across services.

Developed a distributed, real-time reporting system used to deliver personalized marketing and advertising content across the web.
The system was deployed on hundreds of servers in global datacenters and handled thousands of transactions per second.

Key Contributions:

• Built a scalable framework for real-time data ingestion from advertising exchange APIs such as AppNexus, OpenX, and Pubmatic.
• Implemented publisher email report extraction and processing pipelines.
• Developed alerting and automated reporting systems with configurable scheduling.
• Created services to handle impressions, clicks, and user actions at high volume, including:
  Tracking user IPs and frequency to update audience segments
  Managing cookies
  Calculating revenue and cost
  Generating usage reports

Technologies: Java, Spring, JSP, Kafka, Javascript, Tomcat, Python, Bash, Linux, SQLite, Aerospike, Vertica, MySQL
Tools & Methodologies: Maven, Ant, Git, Jenkins, multithreading, Agile

Developed two core financial systems for large-scale public and banking institutions in Israel.

• Municipal Revenue Management System (Rishon LeZion Municipality):
  Designed and developed a system for managing municipal tax revenues using Java and Oracle, following the Model Driven Architecture (MDA) approach.
  Technologies: Java, Oracle, JSF 1.2, Hibernate (annotations), Spring, SQL
• Pension Fund Management System (Bank Hapoalim):
  Built a pension fund management platform for bank employees, including backend logic and system integrations.
  Technologies: JSF 1.1, Hibernate (XML), SQL, RAD 7.5, WebSphere 6.1, Reflection