07/31/2025 updated
100 % available
Senior Java Developer
Sofia, Bulgaria
Only remote
Master of ScienceInnovationC (Programming Language)Java (Programming Language)PHPApplication Programming Interfaces (APIs)Amazon Web ServicesApache AntApache HTTP ServerApache TomcatServer ApplicationApple Mac SystemsApplication FirewallTest AutomationBash ShellBootstrap (Software)
An accomplished certified professional with over 18 years of experience in software development and management. My career has encompassed roles as both a software developer and manager, allowing me to effectively bridge the gap between technical execution and strategic leadership. I excel in guiding software development teams to deliver cutting-edge solutions, optimizing processes, and driving innovation.
Programming Languages: Java, C, PHP, Perl
Databases: SQL, MariaDB, MySQL Cluster, PostgreSQL, Sybase, MSSQL, Oracle, MongoDb, HBase, Cassandra, Redis, Memcached
Networking: xDSL, Ethernet, PPPoE, Switching, Routing, SecurityAAA, IAM, Netfilter, Network Firewall, Web Application firewall, FreeRadius, JRadius,
Web Frameworks: Spring MVC, Spring Boot
Web UI: GWT (Google Web Toolkit), Bootstrap, ReactJS
Application servers: Jetty, Tomcat
Database ORM: Datanucleus JDO, Hibernate JPA
API: REST, SOAP, gRPC
OS: Linux, Solaris, HPUX, MacOS, Windows
Cloud: Google, AWS, Cloudflare, Hetzner, DigitalOcean
QA / Testing Tools: JUnit, TestNG, Selenium
Build tools: ant, maven, gradle, autotools
Other Technologies: Git, Docker, Lucene, DNS, Mail, Haproxy, NGINX, Apache HTTP, NFS, GFS, HDFS, SVN,Bash
Programming Languages: Java, C, PHP, Perl
Databases: SQL, MariaDB, MySQL Cluster, PostgreSQL, Sybase, MSSQL, Oracle, MongoDb, HBase, Cassandra, Redis, Memcached
Networking: xDSL, Ethernet, PPPoE, Switching, Routing, SecurityAAA, IAM, Netfilter, Network Firewall, Web Application firewall, FreeRadius, JRadius,
Web Frameworks: Spring MVC, Spring Boot
Web UI: GWT (Google Web Toolkit), Bootstrap, ReactJS
Application servers: Jetty, Tomcat
Database ORM: Datanucleus JDO, Hibernate JPA
API: REST, SOAP, gRPC
OS: Linux, Solaris, HPUX, MacOS, Windows
Cloud: Google, AWS, Cloudflare, Hetzner, DigitalOcean
QA / Testing Tools: JUnit, TestNG, Selenium
Build tools: ant, maven, gradle, autotools
Other Technologies: Git, Docker, Lucene, DNS, Mail, Haproxy, NGINX, Apache HTTP, NFS, GFS, HDFS, SVN,Bash
Experience
Professional experience10+ years
Freelancer since2020
Languages
BulgarianNative speakerEnglishFluent
Project history
DevInPro, A start-up offering custom software development, devinpro.com
Development in Java of Order-Preserving Encryption (OPE) Datastore module
Development in Java of Order-Preserving Encryption (OPE) Datastore module
- Development in Java and GWT of Identity and Access management system (IAM)
- Development in Java and GWT of Administration, maintenance, and monitoring portal
- Development in Java and GWT of Customer self-care portal
- Software design
- Network design
- Physical and logical data modeling
- Management of a diverse teams, including subcontractors and freelancers
- Development task allocation and management
- QA task allocation and management
- Technology and vendor selection
Design, develop, and deploy scalable and responsive web applications, utilizing a variety of
back-end technologies, including but not limited to:
Java, PHP, Groovy
MariaDB, PostgreSQL, MongoDb, HBase, Cassandra, Redis, Memcached
Spring MVC, Spring Boot, Datanucleus JDO, Hibernate JPA
RESTful API
JUnit, TestNG
Docker, GCP, AWS, Cloudflare, Hetzner, DigitalOcean
back-end technologies, including but not limited to:
Java, PHP, Groovy
MariaDB, PostgreSQL, MongoDb, HBase, Cassandra, Redis, Memcached
Spring MVC, Spring Boot, Datanucleus JDO, Hibernate JPA
RESTful API
JUnit, TestNG
Docker, GCP, AWS, Cloudflare, Hetzner, DigitalOcean
* Team lead and development in Java and C of Authentication, Authorization and Accounting (AAA) system with peak loads of 60K simultaneous requests
* Team lead and development in Java of service and network provisioning system for xDSL, Active Ethernet and GPON
* Team lead and development in Java of TR-69 CPE management and autoconfiguration system
* Team lead TR-69 CPE compliance tests and integration
* Team lead and development in C of anycast authoritative and recursive DNS
* Team lead and development in C and PHP of email and web hosting platform
* Team lead and development in Java and PHP of self-care portal
* Team lead and development in Java and PHP of captivation portal
* Team lead and development in Perl of IP SLA monitoring system
* Team lead tender preparation, vendor selection and acceptance tests
* Team lead third level support
* Team lead and development in Java of service and network provisioning system for xDSL, Active Ethernet and GPON
* Team lead and development in Java of TR-69 CPE management and autoconfiguration system
* Team lead TR-69 CPE compliance tests and integration
* Team lead and development in C of anycast authoritative and recursive DNS
* Team lead and development in C and PHP of email and web hosting platform
* Team lead and development in Java and PHP of self-care portal
* Team lead and development in Java and PHP of captivation portal
* Team lead and development in Perl of IP SLA monitoring system
* Team lead tender preparation, vendor selection and acceptance tests
* Team lead third level support
Certificates
Certified Java Professiona
Oracle Certified Java Professional2012
Cisco Certified Network Associate
Cisco2010