Software Engineer Java Developer

VALERIIA LEBEDIEVA

Philadelphia, PA Phone: 302-***-**** Email: ********************@*****.*** Links: LinkedIn JAVA FULL-STACK SOFTWARE ENGINEER BACK-END DEVELOPMENT AGILE COACH Experienced Java Developer with 4+ years’ experience in web development & backend systems; adept in Spring, Hibernate, REST API, SQL, JS, Python. Skilled in leading projects from estimation to deployment, delivering high-quality systems & driving client satisfaction. Proven expertise in microservices architecture, code optimization, and security flaw resolution, with a track record of reducing development time. Certified in Java & cloud technologies. SELECTED HIGHLIGHTS

• As the sole backend developer at Playtika, oversaw all stages from estimation to deployment, ensuring timely delivery of high-quality code; recognized for achieving outstanding client satisfaction and accelerated project onboarding by 30% compared to peers.

• Improved IBM project efficiency by identifying and rectifying critical vulnerabilities & outdated libraries; created detailed technical documentation and an onboarding guide; introduced a microservice architecture using Design Patterns, driving code readability and 20% cut in development time.

• Streamlined project processes at GlobalLogic by refactoring legacy code with Design Patterns, reducing development time from 2 days to 3 hours; took on additional backend tasks to ensure successful sprint completion while awaiting a new team member.

• Enhanced legacy codebase at Luxoft through systematic refactoring with Design Patterns, improving code readability and test coverage by 40%.

• Supported 10 new hires through the “Buddy for Newcomers” program, providing onboarding assistance; mentored Java trainees, helping them develop individualized training plans, and contributed to the “Halifax Innovation Challenge” as a mentor, guiding students to a second-place finish. PROFESSIONAL EXPERIENCE

IBM – Canada Sep. 2022 – Sep. 2023

Java Software Engineer (Domain: Telecommunications)

• Consolidated alarm processing for Canada's largest telecom by decommissioning legacy tools and implementing a unified microservice architecture.

• Developed and deployed microservices to integrate network fault alarms into Kafka pipelines for UI visualization, auto-ticketing, and storage in Network Big Data and Redis, with Kibana used for analysis and root cause investigation.

• Discovered and rectified critical security flaws in code and library dependencies, significantly improving system reliability and documentation quality; created detailed guides for system setup and onboarding, enhancing team efficiency.

• Executed high-standard development of microservices, applying Design Patterns for code optimization.

• Performed code reviews, task estimation, and developed comprehensive unit and integration tests to ensure software integrity.

• Utilized a broad tech stack including Java 8-17, Kafka, Kubernetes, OpenShift, Redis, Oracle, Spring Boot, Spring Data, Hibernate, Grafana, Helm, JUnit, Mockito, Kibana, Jenkins, Jira, and Git to deliver robust solutions in a major telecommunications environment. Left IBM on a strategic career break to relocate to the USA while pursuing online education. Successfully completed several courses, earning the latest technical certifications; now ready to pursue new opportunities. Ongoing education is flexible online, allowing it to fit around work commitments. GlobalLogic – Ukraine Dec. 2021 – Aug. 2022

Java Software Engineer (Domain: Healthcare)

• Spearheaded the development of a leading digital identity platform for healthcare, enhancing secure data access by integrating clinical workflows with in-process authentication, thus replacing traditional password methods and establishing a robust, auditable chain of trust.

• Streamlined development processes by refactoring legacy code, cutting development time from 2 days to 3 hours, and significantly improving efficiency and maintainability.

• Contributed to new feature development, proposed innovative solutions for technical challenges, conducted code reviews, and estimated task timelines to ensure timely delivery of high-quality software.

• Addressed and resolved existing bugs, leveraging a technology stack including Java 8, Spring Boot, Spring Security, MySQL, Hibernate, JUnit, Mockito, SonarQube, SVN, Git, Jenkins, and Jira to enhance software performance and security. Playtika – Ukraine Mar. 2021 – Nov. 2021

Java Software Engineer (Domain: Gaming)

• Led the development of new slot machines for a major online casino platform, managing the entire backend lifecycle from requirement gathering and design to production implementation, resulting in a 30% increase in user base.

• Collaborated with mathematicians to develop and integrate algorithms, ensuring robust and engaging gameplay experiences.

• Delivered high-quality, production-ready code within project timelines; oversaw deployment, monitoring, and quality assurance of backend systems. Philadelphia, Orlando, PA FL

• Developed comprehensive unit and integration tests, conducted code reviews, and provided troubleshooting support to resolve application issues.

• Technologies included Java 8-11, Spring Boot, JAXB, Aerospike, Kafka, Docker, JUnit, Mockito, SonarQube, Git, and TeamCity. Luxoft – Ukraine Mar. 2020 – Feb. 2021

Junior Full Stack Web Developer (Domain: Corporate Finance & Investment Banking)

• Developed and enhanced online banking & Forex platforms, focusing on solutions & analytical tools to improve trading services & client interactions.

• Managed the Forex platform's post-market activities, creating and integrating a new application to streamline client trading activity verification and fully automate reconciliation, eliminating manual reconciliation efforts.

• Designed & deployed new features, conducted code reviews, estimated tasks, resolved bugs, and developed unit, integration & end-to-end tests.

• Refactored legacy code to improve readability and increased test coverage by 40%, enhancing overall code quality and maintainability.

• Leveraged a tech stack including Java 8, Spring Framework, Spring Data, Hibernate, JPA Criteria, Oracle, Docker, JUnit, Mockito, AssertJ, Jbehave, HTML, CSS, JavaScript, ReactJS, TypeScript, SonarQube, Jenkins, Git, and Jira. EDUCATION

Bachelor’s Degree: Software Development, Brigham Young University – Idaho, USA (Online) Sep. 2023 – Jul. 2026 Professional Certificate: Java Web Programming, Step Computer Academy – UA Sep. 2019 – Jul. 2020 Associate Degree: Mechanical Engineering, Motor Transport College – UA Sep. 2011 – Jun. 2014 CERTIFICATIONS

• Programming: Oracle: Certified Professional, Java SE 8 Programmer (2023), Certified Professional, Java SE 11 Developer (2023), Certified Professional, Java SE 17 Developer (2023), Database SQL Certified Associate (2023) VMware: Spring Certified Professional (2023) FoxmindEd: Design Patterns (2021) IT Academy STEP: Java Web Programming (2020)

• Cloud: Oracle: Cloud Infrastructure Multicloud Architect Certified Associate (2024), Machine Learning using Autonomous Database Certified Associate (2024), Cloud Infrastructure Architect Associate (2023), Cloud Infrastructure Foundations Associate (2023) AWS: Cloud Practitioner

(2023) Microsoft: Azure Fundamentals (2023) Google: Cloud Digital Leader (2023) IBM: Cloud DevSecOps v1 Specialty (2023), Certified Professional Architect - Cloud v5 (2023), Technical Advocate - Cloud v3 (2022), Advocate - Cloud v2 (2022)

• Agile Leadership: ICAgile: Agile Team Facilitation (2024), Agile Coaching (2023) Scaled Agile: SAFe 6 Scrum Master (2023) PMI: Associate in Project Management (2023), Disciplined Agile Senior Scrum Master (2023). SKILLS

• Key Competencies: Backend Development Software Engineering Microservice Architecture Design Patterns Code Review Security Flaws Identification Process Improvement Legacy Code Refactoring System Optimization Technical Documentation Agile Methodology Data Structures Algorithms Project Management (Agile & Waterfall) Machine Learning (ML) Cloud Solutions Team Leadership Mentoring

• Technical: Java 8 - 21 Spring Framework Spring Boot/Data/Security/AOP Microservices RESTful API SQL NoSQL JPA/Hibernate Multi- Threading Docker Kubernetes CI/CD Git OpenShift Apache Maven AWS Cloud Azure Google Cloud IBM Cloud OCI Oracle MySQL Redis Tomcat Kafka Grafana Helm Jenkins Sonar Kibana OOP JPA Criteria Python JavaScript HTML CSS ReactJS Selenium JUnit Mockito XML JSON Scrum SAFe Jira Confluence ADDITIONAL INFORMATION

• Work Authorization: EAD C11 (sponsorship not required)

• Languages: English (Fluent) Ukrainian (Native) Russian (Fluent) Polish (Intermediate) INTERESTS

• Enthusiastic about psychology for understanding different personality types and building trusting relationships.

• Lifelong learner with a knack for quickly acquiring new skills.

• Thoroughly enjoy traveling, exploring cultures, and visiting famous places.

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