Recommended expert

Kai Virtanen

Senior Software Engineer

Kai Virtanen
Helsinki, Finland

Experience

Aug 2023 - Sep 2025
2 years 2 months

Senior Software Engineer

Wipro

  • Led the design and launch of a modular, large-scale platform with extensibility and real-time data integration at its core, built with Python, AWS, and Docker, achieving a 25% reduction in deployment time.
  • Implemented robust CI/CD pipelines using Docker and AWS Lambda, improving system reliability by 30% and ensuring real-time scalability.
  • Developed and integrated AI/ML models to analyze user interactions, leading to a 20% increase in user engagement through personalized experiences.
  • Worked closely with product leadership to rapidly prototype features, improving time-to-feedback by 40% using agile methodologies.
  • Created test automation frameworks to ensure system integrity, resulting in a 15% decrease in post-deployment bugs.
  • Designed and implemented monitoring solutions for real-time system health tracking, ensuring 99.9% uptime.
  • Collaborated with security teams to perform red-teaming of AI models, identifying vulnerabilities and implementing mitigations to improve system safety.
Apr 2020 - Jul 2023
3 years 4 months

Senior Software Engineer

Amazon

  • Enhanced large-scale data processing pipelines, improving throughput by 35% and reducing error rates by 20% using Python and AWS.
  • Developed real-time analytics tools using AWS Lambda and Kinesis, allowing the company to deliver instant insights to clients.
  • Integrated secure payment systems into e-commerce and advertising platforms, ensuring compliance with PCI DSS and other regulatory standards.
  • Collaborated with cross-functional teams to optimize API security and implement penetration testing, reducing system vulnerabilities by 15%.
  • Led the development of features that reduced time-to-delivery for high-volume campaigns by 25%, streamlining internal workflows.
  • Contributed to a project that helped increase client satisfaction by 30% through improved transparency and fraud detection in advertising campaigns.
Oct 2018 - Mar 2020
1 year 6 months

Software Engineer

Mento

  • Designed and implemented internal frameworks for workflow automation across platforms, improving operational efficiency by 20%.
  • Developed custom tools using Python to streamline data exchange and integrate with third-party APIs, reducing manual effort by 30%.
  • Built tools that automated data validation and reporting, ensuring compliance and improving decision-making for partners.
  • Collaborated with product teams to implement secure coding practices and penetration testing for new features, ensuring safety in all deployments.
Sep 2017 - Sep 2018
1 year 1 month

Junior Software Engineer

SoftBank

  • Developed billing and analytics components for global operations, ensuring scalability and real-time reporting.
  • Built real-time data transformation pipelines to improve accuracy and reduce reporting time for invoicing.
  • Focused on building robust, secure systems with strong audit trails to ensure system integrity in financial services.
  • Collaborated with the security team to implement best practices for OS security and network security, ensuring compliance with internal and external standards.

Summary

Results-driven Senior Software Engineer with over 9 years of experience specializing in large-scale platform design, AI security, and system optimization. Led projects in the EdTech, AdTech, E-commerce, and FinTech industries, with a focus on automation, AI/ML security, and real-time data processing. Adept at building scalable, secure systems, improving user engagement, and ensuring high availability with technologies like Python, AWS, Docker, and CI/CD.

Skills

  • Languages: Python, Bash, Sql, Javascript
  • Libraries/frameworks: Flask, Django, Node.js, React
  • Cloud/platforms: Aws, Docker, Kubernetes, Lambda
  • Data/databases: Postgresql, Mongodb, Redis
  • Tools/technologies: Git, Jenkins, Ci/cd, Jira, Pyrit, Garak
  • Soft Skills: Adaptability, Time Management, Flexibility, Decision-making, Teamwork

Languages

English
Advanced
Japanese
Elementary

Education

Apr 2015 - Mar 2017

The University of Tokyo

Master’s of Computer Science · Computer Science · Japan

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