Backend Developer Resume Sunnyvale, CA - Hire IT People

OBJECTIVE

SUMMARY

Java programming - core and back-end: JDBC, XML, JMS, JPA, concurrency et al.
Developing ETL, ORM, business logic, algorithms, and data structures
SQL, PL/SQL and T-SQL programming for Oracle, SQL Server, MySQL and other RDBMSs
Developing highly normalized data models for ODS as well as dimensional ones for DW and data marts for various subject areas (health care, financial, retail et al.) while facilitating JAD sessions with SME and implementing all the phases of database design: determining data rules, creating conceptual-, logical- and physical data models
Developing unit, performance and integration test plans and cases - for most projects below

PROFESSIONAL EXPERIENCE

Confidential, Sunnyvale, CA

Backend Developer

Responsibilities:

Designed the API
Designed the database
Developed incoming file names and their content processing in AWS Lambda concurrent environment
Implemented AWS S3 buckets KMS-encrypted data transfer to Salesforce, DB and client application endpoint
Created Jenkins pipeline for CI/CD
Developed unit, performance and destructive tests
Completely docummented the application
Wrote a troubleshooting manual

Environment: Java, SQL, Amazon Aurora, MySQL, RESTful API, JUnit, GitLab

Confidential, Vienna, VA

Software Engineer

Responsibilities:

Developed the Batch Framework - a reusable Java object-oriented packages allowing to develop batch processes with minimal effort
Developed ETL processes based on the Batch Framework and also for migrating data from ODS to DW and from DW to DM
Designed and implemented algorithms and used concurrent approach to decrease times of data processing
Designed and ran many test cases, wrote tests, found and fixed bugs
Provided technical support and training
Prepared specifications and manuals about the systems

Environment: Java, Oracle DB, PL/SQL, Hibernate, JUnit, Enterprise Architect, Git

Confidential, Santa Clara, CA

Sr. Software Engineer

Responsibilities:

Designed and implemented algorithms for optimal work allocation and other tasks
Designed and implemented work tasks filtering by many criteria
Utilized linear programming for calculating optimal work load proportions in work flows
Wrote ETL adapters to import data from external systems in JSON, XML and other formats
Found and fixed a lot of defects

Environment: Java EE, C++, JavaScript SQL Server, Microsoft Visual Studio, IntelliJ IDEA, Eclipse, HP Quality Center

Confidential, Santa Clara, CA

Software Engineer

Responsibilities:

Environment: Java SE 6, Informix, SVN, Linux, Eclipse

Confidential

Software Engineer

Responsibilities:

Carried out all phases of SDLC for mission critical, foolproof POS and Inventory Management applications including identifying and formalizing business needs, data modeling, object-oriented analysis and design, creation of reusable components and libraries
Developed a proprietary distributed real-time transactional point-of-sale system compatible with JavaPOS standard
Developed a bonus system (CRM) to stimulate Estee Lauder and Clinique customers
Wrote an in-house program for calculating vacation, disability and other time off of the company staff for the Confidential . Confidential .T. HR department
Elaborated data synchronization between DW and ODS using replication technology
Developed interfaces with terminal devices for the retail industry (cash registers, portable scanners, scales, bar-code printers, etc.)
Developed data migration utilities between Confidential . Confidential .T. systems and systems of other companies

Environment: Java, Delphi, C++, Oracle, SQL Server, MySQL, TopLink, ERwin, PowerDesigner, ER/Studio