Maksym Kiiashkin
Senior Backend Software Engineer @GR8_TECH
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WORK HISTORY
Senior Backend Software Engineer @GR8_TECH
Limassol, CY
Enhanced events throughput of the entire micro-services system on 10% by optimizing EventStore scavenge process using a math interpolation function to dynamically calculate events deletion size based on instances load metrics- Built a high-speed Segment Builder service, managing 100K+ players per segment across multiple marketing flows- Configured Amazon IAM roles to ensure secure access to Amazon S3 from EC2 instances, optimizing cloud storage workflows- Built hot-reloadable Kafka configuration enabling real-time topics subscriptions/unsubscriptions, eliminating on-call support and message processing delays- Developed Outgoing API Request service enabling multichannel players acquisition flows via Telegram, ManyChat, WhatsApp and Instagram API reaching 1M+ user sessions montly- Participated in design discussions and helped define the mechanics of frontend-backend interaction for new features, improving delivery speed and reducing miscommunication between teams- Conducted mid-senior software engineers interviewing leading to increase in company productivity.
EDUCATION
National Technical University "Kharkiv Polytechnic Institute"
Bachelor's degree
National Technical University "Kharkiv Polytechnic Institute"
Master's degree
Kharkiv Patent Computer College
Diploma of Education
ABOUT MAKSYM KIIASHKIN
Full Stack Developer with 8 years of experience building scalable backends and modern frontends. Delivered high-load platforms in Fintech, SaaS, iGaming, enterprise CRM systems. Strong in micro-services, real-time data processing, and cloud-native architecture (AWS, Kubernetes). Proven mentor, interviewer and part-time team lead. Backend Development Frameworks.NET Core 2.0.NET 9, ASP.NET Core.NET Framework 4.8, Laravel, Java Spring Boot, NodeJS, FastApi. Programming Languages: C#, Python, Java, PHP, JavaScript, GoLang. Message Brokers: RabbitMQ, Kafka. Databases: PostgreSQL, MSSQL, MySQL, Eventstore, Amazon RDS, Amazon Aurora, Elasticsearch. Caching: Redis, Nginx. Media Storages: Amazon S3, Microsoft Sharepoint. Communication protocols: GraphQL, gRPC, Rest, WebSocket. Metrics and logging: Grafana, Prometheus, Kibana, GrayLog, Opensearch. External system integrations: SAP, Oracle Primavera P6. Testing: NUnit, xUnit. Frontend Development Frameworks and libraries: ReactJS, Redux, Jotai, Recoil, Zustand, Angular, Angular Universal, jQuery, Bootstrap, SASS, Less, styled-components, css-modules, PostCSS, Tailwind CSS, Webpack. Programming Languages: JavaScript, TypeScript, HTML, CSS. Testing: jest. DevOps Containerization and orchestration: Amazon EKS, Kubernetes, Docker, Rancher, Helm. CVS: Git, GitHub, GitLab. IaC: Terraform. CI/CD: Github Actions, GitLab CI/CD. Operation systems: Linux, MacOS, Windows. Metrics and logging: Grafana, Prometheus, Kibana, GrayLog, Opensearch. Project management Methodologies: Scrum, Kanban. Tools: JIRA, Confluence, Slack, Microsoft Teams. Soft skills Communication, problem-solving, mentorship, adaptability, attention to detail, client focus.
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