
Said Kaldybaev
Verified Expert in Engineering
Software Engineer and Developer
Vancouver, BC, Canada
Toptal member since December 20, 2024
Said is an experienced software engineer with a proven track record of developing and maintaining high-quality, efficient, and reliable code. Detail-oriented and highly motivated, he possesses strong problem-solving skills and excels at collaborating with cross-functional teams to deliver solutions that align with user needs. His technical expertise and team-oriented mindset make him a valuable asset to any team, driving innovation and ensuring project success.
Portfolio
Experience
- Ruby - 13 years
- JavaScript - 12 years
- Ruby on Rails (RoR) - 10 years
- REST APIs - 8 years
- PostgreSQL - 8 years
- MySQL - 7 years
- Vue - 5 years
- React - 5 years
Availability
Preferred Environment
Ruby, JavaScript, React, Vue, PostgreSQL, Ruby on Rails (RoR)
The most amazing...
...project I've worked on was developing a real-time recommendation engine for an eCommerce platform.
Work Experience
Senior Software Engineer
Malwarebytes
- Developed distributed licensing services to facilitate the purchase of anti-malware and privacy products, redeem and activate their devices, and seamlessly process payments via the 2Checkout online payment service.
- Built the MyAccount portal, enabling users to manage their subscriptions and licenses. Implemented features for managing devices, updating billing details, and viewing payment histories leveraging React, Redux, TypeScript, and GraphQL.
- Managed a cross-functional team of five engineers to develop an automated customer data deletion project, ensuring SOC 2 compliance and the timely removal of obsolete accounts, meeting deadlines, and improving data management.
Senior Full-stack Developer
Ample Organics
- Rearchitected the core application to support multitenancy, enhancing scalability and flexibility. Optimized the onboarding process, reducing costs by 50% by enabling multiple customers to be served from a single instance.
- Reduced organizational reliance on QA regressions by increasing test coverage from 30% to 80% through end-to-end and snapshot testing using RSpec, rspec-snapshot, and Cypress test utilities.
- Standardized technical processes, best practices, and API documentation using OpenAPI, enabling the delivery of high-quality products to customers with greater consistency and reliability.
Software Engineer
Malwarebytes
- Isolated PDF generation and email sending functionalities from a monolithic application, redesigning them as independent microservices. Built new APIs and features and integrated the microservices into the existing infrastructure using Apache Kafka.
- Integrated CI/CD with Travis CI, yielding a faster iteration cycle and automated new feature branch code testing. Integrated and maintained 3rd-party suppliers, including Cleverbridge, Zuora, Salesforce, and Zendesk.
- Enhanced system reliability by introducing automated monitoring and alerting for payment processing and email delivery services, reducing downtime and improving incident response time.
Software Developer
EveryPay AS
- Developed and maintained a cloud-based, compliant payment gateway platform with robust APIs supporting diverse payment methods, ensuring the full Payment Card Industry Data Security Standard (PCI DSS) and General Data Protection Regulation (GDPR) compliance while optimizing transaction processing.
- Spearheaded the development of seamless API integrations that enabled merchants to securely process payments across multiple platforms, enhancing user experience and streamlining payment workflows.
- Architected an open-source integration module for e-shops to support card payments, utilizing PHP, Python, and JavaScript with an API.
Software Developer
GeoPay Inc
- Built a mobile money transfer service, enabling consumers to exchange value through cash transfers, top-ups, m-commerce, and bill payments. Collaborated closely with cross-functional teams to address and resolve complex user challenges.
- Developed USSD/SMS gateways using Ruby and EventMachine, implementing multiple event loops for various requests. Developed APIs to manage USSD and SMS interactions and integrated the gateways with our existing infrastructure.
- Tracked and fixed bugs using Jira as a reporting tool.
Experience
Arena | Real Estate Marketplace Platform
Education
Bachelor's Degree in Computer Science
Ala-Too International University - Bishkek
Certifications
AWS Certified Cloud Practitioner
Amazon Web Services
Web Application Security Advanced
Clarified Security OÜ
M101: MongoDB for Developers
MongoDB University
Skills
Libraries/APIs
REST APIs, Vue, React, jQuery, Google Maps, Node.js, JSON API, Sidekiq, GraphQL API
Tools
Amazon Simple Queue Service (SQS), Figma, Amazon Elastic Container Service (ECS), Amazon Simple Notification Service (SNS), AWS CLI, AWS SDK, AWS Deployment
Languages
Ruby, JavaScript, GraphQL, PHP, Python, SQL, HTML5, CSS, TypeScript, HTML, CSS3
Frameworks
Ruby on Rails (RoR), Jest, Ruby on Rails 6
Storage
Redis, MongoDB, PostgreSQL, MySQL, JSON, Elasticsearch, Amazon DynamoDB, SQL Injection Protection, NoSQL, Databases
Paradigms
Test-driven Development (TDD), Database Design, REST, Penetration Testing, Agile Software Development
Platforms
AWS Lambda, AWS IoT
Other
API Integration, Bootstrap 5, Front-end, Back-end, APIs, Front-end Development, OOP Designs, Full-stack, Security, XSS, Software QA, Algorithms
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