Nigar Huseynli
Baku
Summary
Java Backend Developer with proven expertise in designing and optimizing scalable server-side applications using Java, Spring Boot, and Hibernate. Delivered robust RESTful APIs and integrated PostgreSQL databases, improving system performance and maintainability through clean code and best practices. Skilled in debugging and performance tuning to enhance application stability and scalability. Collaborated within Agile teams to deliver reliable backend solutions that consistently met and exceeded project goals.
Overview
6
6
years of professional experience
1
1
Certification
Work History
Java Developer
Andersen IT Company
07.2025 - Current
- Coordinate communication among system components within healthcare application's monolithic architecture.
- Developed and maintained RESTful APIs using Java and Spring Boot, enabling secure data exchange with 3 external client applications and improving system interoperability.
- Optimized backend performance and functionality by implementing targeted code and query optimizations, increasing data processing speed for 2 core application modules.
Java Developer Trainee
Andersen IT Company
02.2025 - 06.2025
- Successfully completed an intensive trainee program, contributing to the development of a monolithic application and participating in all major stages of the software development lifecycle (planning, development, testing, and documentation) for 1 production-grade project.
- Acquired hands-on experience with Java (Core Java, OOP), PostgreSQL (via JDBC), and Elastic, implementing search and indexing solutions that reduced query execution time by up to 15%.
- Designed and maintained Java backend applications using Spring Core, Spring Boot, Spring Security, and Hibernate ORM, improving development efficiency by 20%.
- Produced RESTful APIs with Swagger (OpenAPI) documentation covering 20+ endpoints, improving API clarity and usability.
- Applied SOLID principles and implemented widely used design patterns; utilized DevOps practices with GitLab, Docker, Jenkins (CI/CD), and AWS S3 cloud storage.
- Authored unit tests using JUnit and Mockito, increasing code coverage by 85% and reducing bugs in production, oversaw tasks and tracked progress effectively using JIRA.
- Led daily scrum meetings for a team of ten developers, streamlining communication and resolving roadblocks, which accelerated feature delivery by 15% and cut down code review time by 20 minutes.
- Achieved top 10% ranking in internal technical exams and evaluations.
- Broadened skills by learning Golang, focusing on core algorithms and technical concepts.
Engineer
Socar Company
09.2019 - 04.2023
- Assisted dozens of customers every day by quickly checking, fixing, or replacing their gas cards, making sure they could continue using their service without delays.
- Configured new customer accounts in the system with complete accuracy, ensuring a smooth start for each client.
- Passed with highest scores two professional qualification exams on the first attempt.
- Received recognition as a top-performing employee for making customer visits faster, easier, and problem-free.
- Resolved technical issues on the spot, saving customers time and reducing the need for return visits.
- Mentored colleagues by sharing tips and helping them improve service speed and quality.
Education
Master - Chemical Engineering
Azerbaijan State Oil and Industry University
06.2020
Bachelor - Chemistry
Baku State University
06.2018
Skills
- Java programming
- Proficient in Core Java
- Application of SOLID principles
- Experience with OOP principles
- PostgreSQL database management
- Software design patterns
- Java database connectivity
- Elastic material expertise
- Hibernate framework expertise
- Experience with Spring Core components
- Spring Boot development
- Spring Security framework expertise
- Maven project management
- Gradle dependency management
- OpenAPI specification
- RESTful API development
- GRPC integration
- Microservices implementation
- Docker deployment experience
- GitLab proficiency
- Jenkins automation
- AWS S3 storage solutions
- JUnit testing
- Unit testing with Mockito
- Agile project management
Languages
Russian
Intermediate (B1)
English
Upper intermediate (B2)
Azerbaijani
Bilingual or Proficient (C2)
Certification
- Professional Scrum Master, 26/11/22, Scrum.org
- IELTS, 19/10/23, 19/10/25, Level B2 for Academic.
Timeline
Java Developer
Andersen IT Company
07.2025 - Current
Java Developer Trainee
Andersen IT Company
02.2025 - 06.2025
Engineer
Socar Company
09.2019 - 04.2023
Bachelor - Chemistry
Baku State University
Master - Chemical Engineering
Azerbaijan State Oil and Industry University
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