Evren P.

Evren P.

Ankara, Turkey
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About Me

Evren is a dedicated software engineer with a demonstrated expertise in designing and deploying fault-tolerant, scalable backend architectures capable of handling significant data and transactional loads. Notably, he spearheaded the development of a cutting-edge web-based solution allowing governmental organizations to seamlessly deliver location-specific emergency notifications to mobile subscribers. Throughout his career, Evren remains committed to ensuring software robustness, adaptability, and optimizing customer value. Proficient in Java, he possesses extensive industry experience and is widely recognized for his versatility and ability to readily adapt to new challenges.

AI, ML & LLM

Amazon Elastic Container Service (Amazon ECS) Machine Learning

Frontend

JavaScript HTML CSS React

Backend

Python APIs API Integration Spring Spring Boot Twitter API Node.js REST APIs

Database

SQL Relational Databases Databases PostgreSQL MySQL PL/SQL DB MariaDB Oracle 12c Oracle PL/SQL Oracle Oracle Database

DevOps

Docker Compose DevOps Amazon S3 (AWS S3) Cloud Platforms AWS DevOps Amazon Web Services (AWS) Docker

QA & Testing

Unit Testing Test-driven development (TDD) Integration Testing jUnit

Workflow

Git

Other

Java Kotlin Java 11 Scala Graphql Bash Script Apache Solr Amazon Simple Queue Service (SQS) Citus Logging Apache Maven Apache Tomcat Kafka Streams Object-oriented Design (OOD) Agile Microservices REST ETL Scrum HIPAA Compliance Microservices Architecture Cassandra Hasura Vertica JSON Multithreading Web Services Data Analytics Infrastructure Architecture Distributed Systems Computer Engineering Amazon Kinesis Big Data SOAP Mobile Networks Text Mining Clustering Search Engines Product Development Metrics Back-end Apache Cassandra Full-stack Hibernate Primefaces Jakarta Server Pages (JSP) Spark Jersey ZK Hadoop Apache Spark Mockito Linux JVM Firebase Apache Kafka IBM WebSphere Amazon EC2 Ubuntu OpenLayers jQuery Jooq

Work history

UpStack
UpStack
Senior Java Engineer
2023 - Present (2 years)
Remote

  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

JavaRDBMSUnit TestingSpring BootAPIsKotlinReact.jsAWS
Freelance
Freelance
Software Developer
2021 - Present (4 years)
Remote

  • Designed and developed enterprise-class solutions to improve the client's behavioral healthcare services application.

  • Delivered database schema and architectural designs, developed microservices, and implemented integrations and tests on an email delivery application.

  • Worked on a new recommendation software with an intuitive dashboard, ML engine, and third-party integrations designed to meet business requirements.

GraphqlKotlinUnit TestingGitSQLPostgreSQLSpring BootMicroservicesMySQLJavaHibernateApache SparkAWS SQSAWS EC2MySQLUnixShell ScriptingReact.js
Bilgi Teknolojileri ve İletişim Kurumu - BTK
Bilgi Teknolojileri ve İletişim Kurumu - BTK
Software Developer
2016 - 2020 (4 years)
Ankara, Turkey

  • Built and deployed a semi-distributed database cluster designed with multiple RDBMS instances to handle CDR data.

  • Refactored and optimized the ETL application's codebase to ingest terabytes of CDR data into the cluster daily.

  • Executed new web services to improve a legal HTS app, released a parallel query engine for the RDBMS, and improved performance.

PrimefacesHibernateSpringOracle DBMySQLPythonJavaBig DataHadoopVerticaSQLPL/SQLRDBMSIntegration TestingBash ScriptingETL
Atos
Atos
Software Developer
2014 - 2016 (2 years)
Istanbul, Turkey

  • Delivered new features and fixed bugs on a CRM application for Vodafone TR.

  • Executed and extended coverage of unit tests on the CRM and provided 24/7 on-call support.

  • Designed and implemented the HLR provisioning application extension for a 4G-based HSS device for Turkcell.

Spring FrameworkJavaServer Pages (JSP)JavaScriptOOPJavaShell ScriptingUnit TestingSQLPL/SQLHibernateHTMLCSSRDBMSCRM SystemsHLR
AGMLab
AGMLab
Research Engineer
2013 - 2014 (1 year)
Ankara, Turkey

  • Designed, developed, and implemented a rule-based verification tool for web page blacklisting.

  • Worked on a new REST API solution to improve keyword-based search.

  • Provided solutions to index web pages and maximize distributed deployment of Apache Solr on the solution.

MySQLJavaShell ScriptingGitSQLSolrApache TomcatRDBMSREST APIs
Cybersoft
Cybersoft
Software Developer
2012 - 2013 (1 year)
Ankara, Turkey

  • Designed and implemented new solutions to tune, enhance, and shorten execution time for SQL queries.

  • Deployed new components and oversaw extension tasks for the in-house Swing-based design studio.

  • Provided ongoing support for Cybersoft's in-house application framework for projects.

OracleJavaRDBMSOOPSQLSwing

Showcase

Senior Software Developer - Legal HTS Application
Senior Software Developer - Legal HTS Application

  • Implemented new solutions on the HTS (historical communication traffic search) system to collect CDR data from service providers.

  • The new solution includes a database cluster, ETL module, query services, and data presentation module.

  • The system runs in multi-thread and multi-instance modes to manage terabytes of data daily.

Senior Software Developer - Turkcell HLR-provisioning Application
Senior Software Developer - Turkcell HLR-provisioning Application

  • Developed a multi-threaded, multi-instance application for enhancing mobile subscriber provisioning to the HLR device in the core network.

  • Implemented adapters for the new HSS device and supported the system with 24/7 on-call service.

  • Extended the provisioning application for 4G services.

Senior Software Developer - Public Warning System
Senior Software Developer - Public Warning System

  • Developed a web-based application for authorized government agencies to send location-based emergency messages.

  • Designed the app to support SMS, short audio recordings, and cell broadcast messages for warning alerts.

  • Implemented system integration with mobile network operations and multi-factor authentication.

Education

AWS Certified Solutions Architect – Associate (Expires Dec 2025)
AWS Certified Solutions Architect – Associate (Expires Dec 2025)
AWS
2022 - 2022
MSc Cyber Security
MSc Cyber Security
Marmara University - Turkey
2013 - 2017 (4 years)
B.Eng Computer Engineering
B.Eng Computer Engineering
Middle East Technical University - Turkey
2007 - 2012 (5 years)