Vladislav Sayenko

Vladislav Sayenko

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Rising Codementor
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ABOUT ME
Javascript & AI developer with over 13 years experience
Javascript & AI developer with over 13 years experience

Senior Full Stack Engineer with 13+ years of experience specializing in Golang, JavaScript, AI/ML, and scalable cloud architectures.

Based in Kazakhstan, open to aligning my work hours with EU and US time zones to facilitate seamless collaboration.

Expertise in Golang, Node.js (NestJS, Express), React.js, Angular.js, Vue.js, and AI-driven applications. Proven ability to reduce processing times by 50%, improve fraud detection accuracy by 35%, and build microservices that handle millions of requests per second. Adept at building event-driven architectures, optimizing database performance, and deploying AI/ML models in production.

Astana (+06:00)
Joined February 2025
EXPERTISE
10 years experience
10 years experience
10 years experience
10 years experience
8 years experience
6 years experience
8 years experience

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EMPLOYMENTS
Senior Full Stack Engineer
INTEGRA SOURCES
2020-02-01-2025-01-01

· AI-Powered Predictive Lending Model (Golang, AWS Lambda, TensorFlow, PyTorch): Built a real-time AI-powered risk assessment engine u...

· AI-Powered Predictive Lending Model (Golang, AWS Lambda, TensorFlow, PyTorch): Built a real-time AI-powered risk assessment engine using Golang, Python, TensorFlow, PyTorch, and AWS Lambda, enabling advanced credit scoring and fraud detection. Optimized model inference pipelines, reducing loan default rates by 25% and improving lender decision-making accuracy.

· Fraud Detection with AI & Node.js: Designed an AI-driven fraud detection system leveraging NestJS, Kafka, and Python, TensorFlow, improving fraud detection accuracy by 35%.

· GraphQL-Powered Financial API (Golang & Node.js & React.js): Developed GraphQL APIs for financial data aggregation, improving transaction processing efficiency by 40%.

· Serverless Loan Processing System (Node.js & AWS Step Functions): Migrated a monolithic financial system to serverless microservices, cutting response times by 50%.

· Data Streaming Optimization (Kafka & Node.js): Built event-driven Kafka pipelines, reducing message processing latency by 40%.

· Vue.js-Based Risk Analytics Dashboard (Node.js & Golang APIs): Created a Vue.js dashboard for financial risk analysis, reducing data processing delays by 35%.

· OAuth 2.0 & RBAC Security Implementation: Integrated AWS Cognito & OAuth 2.0 authentication, ensuring HIPAA & PCI DSS compliance.

· AI Model Deployment with AWS SageMaker & FastAPI: Automated AI model training pipelines, increasing fraud detection efficiency.

· Cloud-Native Infrastructure with Terraform: Deployed Terraform-based infrastructure, cutting provisioning times by 60%.

· Performance Tuning (Golang & PostgreSQL): Optimized SQL queries, reducing database response times by 45%.

· Event-Driven Notifications (Node.js & Redis Pub/Sub): Built a real-time notification service, improving engagement rates.

Python
Node.js
Angular
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Python
Node.js
Angular
React
TensorFlow
PyTorch
Go
Vue.js
AWS
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Full Stack JavaScript & Python Engineer
Fora Soft
2017-02-01-2020-01-01

· AI-Powered Patient Monitoring (Golang & TensorFlow): Built an AI-driven health monitoring system that analyzed patient vitals in...

· AI-Powered Patient Monitoring (Golang & TensorFlow): Built an AI-driven health monitoring system that analyzed patient vitals in real-time, increasing adherence to treatments by 30%.

· EHR-Integrated Telemedicine Platform (Node.js & Angular): Led the modernization of a HIPAA-compliant patient portal, enhancing usability, security, and real-time video consultation support.

· Vue.js & React-Based Analytics Dashboards: Developed real-time patient analytics dashboards with D3.js, WebSockets, and Redux, enabling doctors to monitor live health data efficiently.

· GraphQL API for Medical Supply Chains: Designed and deployed GraphQL APIs in Node.js & Golang, facilitating real-time pharmaceutical inventory tracking and distribution optimization.

· Automated AI Training Pipelines (AWS Lambda & Golang): Engineered an automated AI model training and deployment pipeline, reducing model deployment time by 50%.

· DynamoDB & Node.js for Compliance Tracking: Developed an event-driven compliance monitoring system that ensured adherence to regulatory policies by leveraging AWS Lambda, SNS, and SQS.

· Vue.js-Based Drug Research Dashboards: Created an interactive clinical trial dashboard using Vue.js, D3.js, and GraphQL, streamlining data visualization for pharmaceutical research.

· AI-Powered Diagnosis System (Golang & TensorFlow.js): Developed an AI-driven diagnostic assistant that analyzed patient symptoms and recommended potential treatments, improving diagnostic accuracy.

· Azure Kubernetes-Based Secure Data Pipelines: Designed Kubernetes-powered secure data pipelines that complied with HIPAA regulations, ensuring scalable & encrypted patient data transfer.

· AWS Step Functions for Automated Claims Processing: Developed automated insurance claims workflows using AWS Step Functions, SQS, and DynamoDB, reducing processing times by 35%.

Node.js
Angular
D3.js
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Node.js
Angular
D3.js
Kubernetes
GraphQL
TensorFlow
Go
Vue.js
AWS
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JavaScript Developer
Logrus IT
2012-06-01-2017-01-01

· React-Based Patient Management System: Developed a React.js-powered medical management platform that streamlined patient record mana...

· React-Based Patient Management System: Developed a React.js-powered medical management platform that streamlined patient record management and improved data retrieval speed by 40%.

· HIPAA-Compliant Authentication System: Integrated OAuth 2.0, JWT, and AWS Cognito, ensuring secure and role-based access to sensitive medical records.

· GraphQL API for Drug Research: Built a GraphQL API to streamline clinical trial data processing, reducing data retrieval latency by 35%.

· Angular-Based Drug Inventory System: Designed a real-time inventory tracking dashboard with RxJS and WebSockets, reducing stock discrepancies by 30%.

· Node.js & AI Diagnosis System: Created an AI-powered decision-making tool for automated disease diagnosis using Golang and TensorFlow, improving diagnosis accuracy by 28%.

· Vue.js-Based Compliance Monitoring Tool: Built a Vue.js dashboard for regulatory compliance audits, streamlining internal processes and ensuring real-time monitoring of audit trails.

· AWS Lambda for Serverless Data Processing: Developed serverless ETL pipelines using AWS Lambda, Step Functions, and DynamoDB, reducing processing times by 50%.

· Automated AI-Powered Drug Side Effect Prediction (Node.js & TensorFlow): Implemented machine learning models to predict adverse medication reactions, reducing incorrect prescriptions by 20%.

· Event-Driven Clinical Data Processing: Integrated Kafka and Golang microservices to enable real-time analytics and processing of patient data, enhancing reporting accuracy.

· Secure Medical Record System with AWS DynamoDB: Designed and optimized secure, cloud-based data storage for electronic medical records, ensuring 99.9% availability.

· Node.js API for Real-Time Appointment Scheduling: Developed a high-performance scheduling system using Node.js, Redis, and PostgreSQL, reducing appointment booking failures by 40%.

Python
Node.js
Angular
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Python
Node.js
Angular
React
AWS
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PROJECTS
AI-Powered Predictive Lending Model View Project
2024
Developed an AI-driven predictive lending system designed to assess credit risk in real time using Golang, Python, TensorFlow, PyTorch, a...
Developed an AI-driven predictive lending system designed to assess credit risk in real time using Golang, Python, TensorFlow, PyTorch, and AWS Lambda. This system leveraged machine learning models to analyze financial histories, transaction behaviors, and alternative data sources, enabling faster and more accurate lending decisions. Key Features & Innovations: 🔹Real-Time Credit Scoring: Integrated AI-powered risk models to assess borrower credibility instantly, ensuring low-risk loan approvals. 🔹Fraud Detection Algorithms: Designed anomaly detection models to flag suspicious transactions and prevent fraudulent loan applications. 🔹AWS Lambda for Serverless Execution: Deployed serverless AI pipelines, reducing operational costs and improving response times. 🔹GraphQL & RESTful APIs: Built APIs to seamlessly integrate AI predictions into banking platforms. 🔹Automated Model Training Pipelines: Leveraged AWS SageMaker and Kubeflow for continuous model training and fine-tuning, ensuring models stayed accurate with evolving financial trends. 🔹Data Processing Optimization: Implemented batch and stream processing using Kafka and AWS Kinesis, cutting down data ingestion time by 40%. 🔹Regulatory Compliance & Bias Mitigation: Applied explainable AI (XAI) techniques to improve model interpretability, ensuring compliance with financial regulations. Impact & Results: 🔹 Reduced loan default rates by 25%, improving lender profitability. 🔹 Cut loan approval time from hours to seconds, enabling instant decision-making. 🔹 Increased fraud detection accuracy by 35%, mitigating financial risks. 🔹 Optimized compute efficiency by 50%, reducing cloud infrastructure costs. This system revolutionized risk assessment by combining Golang’s high-performance capabilities with AI/ML-powered financial analytics, setting new standards in automated lending decisions.
Python
React
Next.js
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Python
React
Next.js
Go
AWS
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