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Hire the best Relational Databases Specialists in Bulgaria

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  • $27 hourly

    • 5.0/5
    • (38 jobs)
    Certified Senior Software Engineer with 5 years of experience in Backend Developement.. Certifications: - Oracle Certified Associate Java Programmer - 75% - Oracle Certified Professional Java Programmer - 80% - VMware Spring Professional Certification Exam - 85% - Oracle Database 19c Administration Level 1 - 65% Courses and Practice tests: - Over 40 hours of educational video courses for Java EE - Over 800 practice tests written for the VMware Spring Professional Certification Exam - 200 practice tests written for Oracle Database 19c Administration Level 1 Exam - 100 practice tests for OCP Java exams Techlogies I feel confident working with: - Java EE - Collections, Streams, Multithreading, JDBC, Servlets, etc. - Spring/Spring Boot - AOP, MVC, Security, REST, etc - Reactive programming - Project Reactor, Spring WebFlux - Hibernate - RDBMS(Oracle DB, MySQL, MSSQL, PostgreSQL) - JUnit, Mockito - Apache Kafka - Docker - Linux - Jenkins
    vsuc_fltilesrefresh_TrophyIcon Relational Databases
    Oracle Database Administration
    Core Java
    SQL Programming
    Java Persistence API
    Hibernate
    Object-Oriented Programming
    Relational Database
    Spring MVC
    SQL
    Spring Boot
    Data Structures
    Multithreaded Programming
    Java
    Java Collections Framework
  • $40 hourly

    • 5.0/5
    • (4 jobs)
    I have 15 years of experience as a full-stack software developer. In the past I have worked on different projects (web, mobile, desktop) using various Microsoft technologies. - I have strong experience in C# and .NET Core/.NET Framework - I can fully manage projects from the very beginning to the end
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    Relational Database
    React
    SignalR
    .NET Core
    Microsoft Windows
    React Native
    Node.js
    Unit Testing
    MQTT
    OAuth
    Modbus
    Microservice
    ASP.NET Core
    Entity Framework
    SQL
    Back-End Development
    C#
  • $45 hourly

    • 4.9/5
    • (18 jobs)
    I'm a member of Toptal network - a community of world's best 3% of freelancers. I have 9 years of commercial programming experience, including 6 years on Android platform (Java + Kotlin). These included using of concurrency, web services, databases, version control systems such as SVN and Mercurial, web front-end technologies (Phonegap). I'm familiar with Material Design. I've been working on many big projects in Android, including: 1) Magisto - multimedia project, extensive work with UI, social media integration, parallelism 2) Mixer - video streaming, chat 3) Intapp Time - dealt with sqlite database, JSON, custom UI views, Material Design. 4) Aon Dashboard (not listed in Play Store yet) - not so big app as previous two, but it was the first project I did on my own. The whole app was implemented using Material Design guidelines. 5) A phonegap app - using HTML, CSS, JavaScript (which is obvious), 3rd-party JS libraries, Media plugins. ... and many more (almost 20 in total - just in Android) I'm an experienced user of version control systems, such as Git, SVN and Mercurial, both from GUI and Command Line. Also I have a smaller experience in JavaEE. Technologies used: Spring, Servlets, JPA, PostgreSQL, front-end development. I'm familiar with software design patterns, have strong understanding of OOP.
    vsuc_fltilesrefresh_TrophyIcon Relational Databases
    Bluetooth LE
    Mesh Fabric
    Mobile App Development
    Android
    Software Debugging
    Multithreaded Programming
    Relational Database
    JavaScript
    HTML5
    Java
    Kotlin
    SQLite
  • $20 hourly

    • 5.0/5
    • (2 jobs)
    👋 Hi there! I'm Dimitar, a passionate PHP developer with a strong focus on the Laravel framework. With 5+ years of experience in web development, I've honed my skills to deliver robust, efficient, and secure web applications that exceed client expectations. 💼 My Expertise: 🌟 Laravel Development: Laravel is my playground, and I love crafting elegant solutions with it. From custom web applications to RESTful APIs, I've got you covered. 💻 Full-Stack Proficiency: I'm not just limited to the backend. I'm well-versed in front-end technologies, such as HTML, CSS, JavaScript, and popular libraries like Vue.js and NuxtJS, allowing me to create seamless user experiences. 🔐 Security-Centric: Security is paramount. I implement industry best practices to fortify your applications, protecting against common vulnerabilities and ensuring data integrity. 🚀 Performance Optimization: I take performance seriously. I optimize code and database queries to ensure your application runs smoothly even under heavy loads. 📈 Scalability: Building a web app is one thing; ensuring it scales gracefully is another. I architect applications with scalability in mind, so your business can grow without technical constraints. 🤝 Collaborative Approach: I believe in clear communication, meeting deadlines, and working closely with clients to understand their unique needs. I'm committed to turning your vision into reality. 🌎 Remote Work Enthusiast: I thrive in remote work environments. As a freelancer, I've successfully collaborated with clients from around the world, ensuring smooth and productive communication throughout projects.
    vsuc_fltilesrefresh_TrophyIcon Relational Databases
    Tailwind UI
    Tailwind CSS
    Vue.js
    Nuxt.js
    Relational Database
    JavaScript
    MySQL
    Redis
    Laravel
    PHP
  • $83 hourly

    • 0.0/5
    • (0 jobs)
    1. Bachelor degree, computer related major, 3 years of JAVA development experience, familiar with JAVA Web development framework, JVM principles, including memory model, class loading mechanism and performance optimization; 2. Proficient in the use of relational databases, proficient in big data related technologies such as Hadoop, Spark, Hive, HBase, Kafka, Elasticsearch, etc., with practical work experience, and contributions to the open source community 3. Understand the design and architecture of any OLAP database, and be familiar with caching technology and distributed system theory; 4. Have good document writing skills and coding standards, be familiar with software development standards and processes, and have a sense of teamwork; 5. Strong teamwork ability and sense of responsibility, able to complete tasks actively and efficiently, cheerful personality, willing to communicate, good learning ability, dare to innovate and accept challenges
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    Relational Database
    Database
  • $70 hourly

    • 0.0/5
    • (0 jobs)
    I am a Senior Data / Business Analyst with 8+ years of experience in energy trading, SaaS and big implementation projects with strong knowledge of European Energy trading software and business. - Experience with ETRM / CTRM/ CRM platforms and big implementation projects. - Experience in both Waterfall and Agile business analysis methodologies. - Excellent knowledge of SQL, ETL processes, Data Warehousing and interfaces.
    vsuc_fltilesrefresh_TrophyIcon Relational Databases
    Derivatives Trading
    SQL
    Energy
    Data Lake
    Relational Database
    Data Model
    Software QA
    Specifications
    Product Backlog
    Testing
    Business Analysis
    ETL Pipeline
    Data Analysis
    ETL
  • $20 hourly

    • 0.0/5
    • (0 jobs)
    VoIP Engineer - Telnyx - 01/2022 - present Diagnosing and resolving diverse VoIP-related issues with precision and efficiency. Establishing and maintaining strong relationships with vendors such as AT&T, Verizon, and T-Mobile to achieve optimal results. Orchestrating and cooperating with multifaceted teams including FE, BE, Core, Proxy, and Network to accomplish goals. Designing and implementing scripts to streamline and automate tasks, boosting productivity and accuracy. Developing comprehensive alerting systems and interactive Grafana dashboards utilizing Prometheus. Java Developer with VoIP - CallFlow - 04/2021 - 01/2022 I took part in the full lifecycle of the production and implementation of PBX and CC features, including dialers, queues, IVRs, voicemails, CDRs, transfers, and more. Utilized Asterisk development interfaces to achieve optimal results. Adhered to Agile methodologies with precision and rigor. Tier II VoIP Network Engineer - Cisco - 06/2018 - 01/2020 Provided team members with mentorship, ensuring control, quality, and optimal performance. Successfully recreated customers' network configurations in an internal lab, expertly reproducing and resolving issues. Expertly diagnosed and resolved issues related to VoIP protocols such as SIP, H323, MGCP, SCCP, and ISDN. Experienced in multi-tenant CUBE configurations, high availability setups, dial- plan design and troubleshooting. Skilled in all aspects of CUCM/CUCME, including configuration, implementation
    vsuc_fltilesrefresh_TrophyIcon Relational Databases
    Cisco Certified Network Associate
    Ansible
    Jenkins
    Grafana
    Prometheus
    PostgreSQL
    Relational Database
    Python
    Golang
    REST API
    FreeSWITCH
    Asterisk
    Docker
    Java
    Cisco Certified Network Professional
    Session Initiation Protocol
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