Aug 2025 – Present · 10 mos · London Area, United Kingdom · Hybrid

• Market Tech, Market Dashboard - UI

Sep 2024 – Jul 2025 · 10 mos · London Area, United Kingdom · Hybrid

• Virgin Holiday Migration & Technology Transformation
• ElasticSearch ➔ OpenSearch
• BitBucket ➔ GitHub
• Most modules have been successfully transformed to AWS Step Functions using SAM. Additionally, I migrated several jobs previously running as Dropwizard and Spring Boot applications.
• Load Testing, Acceptance Testing, and more

Jan 2024 – Jul 2024 · 6 mos · Greater London, England, United Kingdom · Remote

• Credit module development

Feb 2023 – Jan 2024 · 11 mos · Greater London, England, United Kingdom · Hybrid

• Building and Customising Vsat Mapping and Aggregation Platform (VMAP)
• I've crafted a VMAP application that seamlessly integrates information from satellites, beams, hubs,
• carriers, virtual carriers, and customers. It presents a visually rich display of these elements on a map,
• pinpointing their coordinates. Moreover, it offers an intuitive visualization of the capacity of each hub
• located in specific regions and offers out-route, in-route signal, special efficiency measurement, and throughput metrics in near real-time from a graphite system.
• Technologies and Approaches: Java, Golang, Spring Boot, Gradle, AWS, DBT, Redshift, Kinesis, DynamoDB, MongoDB, Docker, Docker-compose, Gitlab, Datadog, Prometheus, Grafana, Terraform

Aug 2022 – Feb 2023 · 6 mos · London · Remote

• Building sms and email composer and sender
• I have developed a structure for sending EMAIL and SMS to our customers. System has been designed
• as a multitenant system. We had lots of actions which they are triggering SMS and EMAIL sqs events
• and all the messages were being sent via Karix API
• Technologies and Approaches: Golang, AWS Lambda, AWS Api Gateway, S3, SQS, SNS, DynamoDB,
• Cloudwatch metrics and logs, Terraform, Prometheus

Mar 2022 – Aug 2022 · 5 mos · Greater London, England, United Kingdom · Remote

• Building smart contract and backend system for a Blockchain game
• I have been developing smart contracts and realm backend system for a blockchain based game.
• For the webassembly I have used Rust for being used in our Dapp web application. I have written our
• smart contracts in Solidity for Polygon network. We were also planning to use substrate in the future to
• write our smart contracts with Rust. For the backend I have used Node.js to integrate Dapp to smart
• contracts.
• Technologies and Approaches: Rust, Node.js, Solidity, Typescript, ethers, Hardhat, Polygon,
• MongoDB Atlas, Realm, Webassembly

Jul 2021 – Mar 2022 · 8 mos · Greater London, England, United Kingdom

• writing lambda service with golang using for deleting nearly 100.000 files from AWS S3 in less than a minute.
• Vaccine and Covid-19 test certificate validation, verification, and decryption with Java
• issuing Test and Vaccine certificate with Sovrin blockchain using Evernym SDK
• Tech stack: Golang, Java, Spring boot, AWS, lambda, kubernetes, docker, minikube, helm charts, Evernym, Blockchain
• CI/CD: Bitbucket Devops -- Repo, Pipeline
• Cloud: AWS Lambda, AWS Api Gateway, S3, SQS, SNS, DynamoDB, Cloudwatch metrics and logs, CouldTrail

Mar 2021 – Jul 2021 · 4 mos

• company-based Multi tenant task management system to manage all processes, tasks, and envelopes for incoming, outgoing, and reply emails.
• tech stack: golang, goroutines, gorilla/mux, gorilla/handlers, gorilla/websocket, viper, Azure/go-amqp, ActiveMQ, Azure pipeline, MSSql DB

Sep 2020 – Mar 2021 · 6 mos · London

• NHS Digital Project - backend developement with Node.js/AWS/TypeScript
• Designing and implementing COVID-19 digital testing platform. We have used AWS lambda and SQS
• events and kinesis streams to trigger to serve covid test appointment by walking or drive. We also
• used DynamoDB to save customer data and flag their multi-accesses to the system to prevent
• overbooking problems. We also used Redis cache to support quick data access from in-memory and
• ease the overbooking problem. Each lambda and SQS had event-bridge definitions in terraform to be
• triggered by filters.
• Tech stack: Node.js, TypeScript, AWS
• Containerization: Docker, Docker-compose, Kubernetes
• CI/CD: Azure Devops -- Repo, Pipeline
• Cloud: AWS Lambda, AWS Api Gateway, S3, SQS, SNS, SES, DynamoDB, Cloudwatch metrics and logs, CouldTrail, Terraform, SAM

Mar 2020 – Aug 2020 · 5 mos · Greater London, England, United Kingdom

• Blockchain DApps for time scribe
• Designing and implementing an application from scratch by using Node.js and Vue.js. Blockchain-based timestamping technology that records time and ownership for all files and implements Consensus Algorithms with Rust and then building final web assembly package to being used along with backend side to confirm and approve transactions going on Ethereum system
• We tried to İmplement the catalyst network that has been started to integrate with the Substrate framework and we have started to use substrate runtime, macros, and frames but they have changed their mind to develop our own protocol with hyperledger. So I have a bit of knowledge of substrate.
• We also had some campaign development on blockchain for our product. So I have written a smart contract with Solidity to accept payments from other EOAs.
• Technologies and Approaches: Node.js, Typescript, Rust, Ethereum, Ganache, Vue.js

Oct 2019 – Jul 2025 · 5 yrs 9 mos · London Area, United Kingdom

Sep 2013 – Sep 2019 · 6 yrs · İstanbul

• Electronic Reporting System (FINDEKS 2.0)
• Designing and implementing technology transformations.
• >Web application is migrated to Java 8, Spring Boot and ReactJS
• >For internal monitoring and I/O intensive applications, I have used Node.js, Serverless Architecture, and AWS services.
• >For CPU-intensive batch jobs, we were using Go by using goroutines concurrency to trigger and process our cron jobs on a daily basis.
• Electronic Reporting System (FINDEKS) – (www.findeks.com)
• Designing and implementing an application that consists of Financial tracking, cheque report, risk report, electronic assurance, financial notification, QR cheque report.
• TCMB (Central Bank of the Republic of Turkey) Currency Risk Project
• Developing and designing currency risk for the real sector, independent auditing firms, and other related firms managed by TCMB
• Banking Services Gateway
• All credit bureau internal applications and over 40 banks are integrated with RESTful APIs and web interfaces. The System was designed and developed for a high transaction.
• Mobile Gateway
• Providing services for sending, receiving, and affirming SMS and OTP used by all internal applications. The system was designed and developed for a high transaction.
• Trade Registry Sharing System
• Developing, designing, and maintaining software system for enabling financial institutions to monitor trade registry Gazette notifications for changes in the trade registry information for their clients within the fast-paced business environment
• Agricultural Loan Assessment System
• Developing, designing, and maintaining suggestion software system for featuring data sharing and pre-approved loan assessment infrastructure for banks and financial institutions looking to lend to agriculture
• Technologies and Approaches: Java 8, Golang, Goroutines, SpringBoot, EJB3, REST, ReactJS, Redux, TDD, Unit Tests, Oracle Coherence, Weblogic12, JMS, Code-review, Agile methodology, CAST Code Analysis, IntelliJ IDEA, Load & Performance Tests

Oct 2012 – Aug 2013 · 10 mos · Istanbul, Istanbul, Türkiye

• Aktif Investment Bank - Enterprise Brokerage System (EBS)
• o Design, development and integration of many insurance products such as auto, health and property insurances to support our client’s day-to-day business operations;
• o Design, development and integration of services which communicates or serves internally and externally in a logically-discrete, multi-layered system;
• o Object-Oriented design, development and maintenance of these modules by employing various technologies
• Aktif Investment Bank - Internet Banking Portal
• Developing Internet Banking (Retail - https://online.aktifbank.com.tr/bireysel | Corporate - https://online.aktifbank.com.tr/kurumsal) Portal
• Developing Dealer Portal (https://bayi.aktifbank.com.tr)
• Technologies: Java/J2EE, Graymound2, Qooxdoo.js, Maven, JAX-WS, JAXB, Jasper Reports, Hibernate – JPA, Log4j, JBoss Application Server, SQL Developer, PL/SQL, SVN, Eclipse IDE, SOAP UI, JIRA

Aug 2011 – Oct 2012 · 1 yr 2 mos · Istanbul, Istanbul, Türkiye

• Customization of portals for RBT (Ring Back Tone) Team
• I was responsible for Caller and Called RBT subscription support service for User, IVR, SMS and USSD portal. I was also in charge of music and rbt box charging services.
• Web and Android project for Social Agent Platform
• I took part in gateway side to get outer information via Facebook, Twitter and other social platform. To be synchronously, I developed social agent project for android platform.
• Technologies: Java/J2EE, Android, JSP – Struts, JAX-WS, JAXB, Hibernate – JPA, JBoss Application Server, SQLite, SVN, Eclipse IDE, SOAP UI, JIRA

Jun 2010 – Oct 2010 · 4 mos · Ankara

• Developing Hospital PACs systems
• Developing dictation reporting application and PACs automation development
• Technologies: Silverlight (3-4), C#, ASP.net, Navicat, MySQL

Jul 2009 – Sep 2009 · 2 mos · Ankara

• Implementing network configurations
• İmplementing Cisco Router, Switch, Hub and Bridge configurations. Committing basic network protocols by using GNS3 programme. Dealing with Token Ring, TCP/IP, UDP and Frame Relay connection types