Ashish Ranjan

About Ashish Ranjan

Principal Backend Engineer with 14+ years of experience building andmaintaining large-scale, business-critical backend systems in Java.I specialize in designing and implementing high-performance services,APIs, and data-intensive workflows that power enterprise platforms withstrict reliability and consistency requirements.My work has involved:• Building and evolving core backend components used across multiple systems• Designing APIs and integrations for high-volume transactional flows• Improving performance, scalability, and maintainability of legacy systems• Collaborating closely with product, architecture, and business teamsI enjoy working on complex backend problems involving data consistency,system design, and performance optimization, and I’m currently sharpeningmy skills in data structures, algorithms, and scalable distributed systems.Open to senior/principal backend or platform engineering roles whereengineering rigor, ownership, and scale matter.

Experience

1. Principal Backend Engineer

   Oracle

   Dec 2021 — Present · Pune, IN

   Led backend development for large-scale billing and revenue systems serving customers and processing millions of transactions daily.• Designed and implemented Java-based backend components to automate complex billing, payment, and revenue workflows.• Built and optimized multi-threaded batch processing pipelines, improving transaction processing performance by ~50%.• Developed data-processing algorithms and consistency-critical workflows for high-volume financial systems.• Owned customization and extension of core platform components, ensuring reliability and correctness in production environments.• Improved system efficiency and operational costs by introducing automated testing and process optimizations, reducing manual effort by ~45%.

Education

• University Polytechnic, BIT Mesra

  Diploma, Computer Science

  2004 — 2007

• Saraswati Vidya Mandir

  Matriculation

  1999 — 2004

• Kalinga Institute of Industrial Technology

  Bachelor of Technology (B.Tech.), Information Technology

  2008 — 2011

Skills

• C
• Core Java
• Hibernate
• Struts
• Unix Shell Scripting
• Eclipse
• Javaserver Pages (Jsp)
• Algorithm Design
• J2ee Application Development
• Websphere Application Server
• Data Structures
• Hibernate 3.1
• Telecommunications
• Shell Scripting
• Oracle
• Java Enterprise Edition
• Jsp
• Jdbc
• Pl/Sql
• Ejb
• Servlets