Talgat is available for hire
Hire TalgatTalgat Saribayev
Verified Expert in Engineering
Software Developer
Astana, Kazakhstan
Toptal member since May 18, 2020
Bio
Talgat is a highly skilled software engineer with deep expertise in system design and cloud computing. Formerly a senior software engineer at Google, he has a proven track record of modernizing web applications and optimizing system performance. His experience includes leading successful projects in IoT and application migrations, demonstrating his ability to drive innovation and enhance technological infrastructure.
Portfolio
Self-employed
AWS IoT, System Design, CQRS, Event Sourcing, Web3, Code Review...
Google
Good Clinical Practice (GCP), JavaScript, Ruby, Linux, Puppet, Performance...
OneLayer
Cloud Computing, Apache Kafka, Go, React, GraphQL, gRPC, Kubernetes...
Experience
- TypeScript - 9 years
- React - 8 years
- JavaScript - 7 years
- PostgreSQL - 7 years
- Node.js - 5 years
- Go - 5 years
- Svelte - 2 years
- Security - 2 years
Availability
Full-time
Preferred Environment
Kubernetes, Docker, SQL, Svelte, Node.js, GraphQL, TypeScript, Go, React, Amazon Web Services (AWS)
The most amazing...
...app I've developed as the leader of a 4-person team saw performance increase by 300%. It received many notes of gratitude from the company.
Work Experience
Lead Software Engineer | Software Architect
2024 - PRESENT
Self-employed
- Directed a cross-functional team in developing a government procurement platform, streamlining procurement workflows and improving process transparency, resulting in a 30% increase in efficiency.
- Led a team of ten engineers in designing and implementing a resource management system for a major construction company, reducing resource allocation time by 40% and enhancing operational productivity.
- Managed a team of five developers in creating a specialized banking application for holiday-related services, delivering an engaging user experience that achieved a 95% satisfaction rate in early testing.
Technologies: AWS IoT, System Design, CQRS, Event Sourcing, Web3, Code Review, Software Development, Application State Management, Caching, Core Web Vitals, ECMAScript (ES6), Front-end Architecture, Web Scalability, Lazy Loading, Web Performance Optimization (WPO), SSG, Static Site Generators, Server-side Rendering (SSR), Scalability, Search Engine Optimization (SEO), Google Cloud Functions, System Architecture, RESTFul APIs, Identity & Access Management (IAM), Continuous Integration (CI), Startups, SvelteKit, Artificial Intelligence (AI), Data Engineering, Automation, Playwright, Puppeteer, Selenium, Amazon ElastiCache, Geolocation, Terraform, DevOps
Senior Software Engineer
2022 - 2024
- Maintained and modernized legacy codebase to accommodate thousands of daily users.
- Spearheaded migrating the web application from Ruby on Rails version 3 to the latest version 7, concurrently updating the MySQL database. This enhanced scalability and achieved a 40% improvement in page load times.
- Orchestrated the migration of the CI/CD process from TeamCity to Jenkins, which resulted in a 30% reduction in deployment time and a 35% increase in the overall build success rate.
- Resolved several security vulnerabilities; for example, detected and prevented ransom data exfiltration in our app, fortifying its resilience and reducing potential security risks by 50%.
Technologies: Good Clinical Practice (GCP), JavaScript, Ruby, Linux, Puppet, Performance, HTML5, Leadership, Architecture, Internet of Things (IoT), REST APIs, Data Architecture, Industrial Internet of Things (IIoT), Back-end, Python, Firebase, Ruby on Rails (RoR), Security Design, Software Architecture, Google Cloud Platform (GCP), GitHub, APIs, Web Development, Apache Kafka, Test-driven Development (TDD), CI/CD Pipelines, Automated Testing, Full-stack Development, Containerization, User Experience (UX), User Interface (UI), Algorithms, Material UI, Analytics, A/B Testing, Web Usability, Mapbox, UX Design, Documentation, Writing & Editing, Code Review, Software Development, Application State Management, Caching, Core Web Vitals, ECMAScript (ES6), Front-end Architecture, Web Scalability, Lazy Loading, Web Performance Optimization (WPO), SSG, Static Site Generators, Server-side Rendering (SSR), Scalability, Search Engine Optimization (SEO), Google Cloud Functions, System Architecture, RESTFul APIs, Gin Tonic, Identity & Access Management (IAM), Continuous Integration (CI), Artificial Intelligence (AI), Data Engineering, Reverse Engineering, Automation, Puppeteer, Selenium, Geolocation, Google Maps API, Terraform, DevOps
Full-stack Engineer
2022 - 2023
OneLayer
- Led the development of the front-end and web services, accounting for 60% of the application's functionality.
- Established robust communication layers between multiple services, including GraphQL, WebSockets, gRPC, and Kafka, resulting in a 33% reduction in latency.
- Designed an event-driven system that can work on the cloud and private solutions, reducing response time by 40%.
- Collaborated effectively with a diverse, cross-functional team through streamlined communication and coordinated efforts.
Technologies: Cloud Computing, Apache Kafka, Go, React, GraphQL, gRPC, Kubernetes, Amazon Web Services (AWS), Documentation, Writing & Editing, Code Review, Software Development, Application State Management, Caching, Core Web Vitals, ECMAScript (ES6), Front-end Architecture, Web Scalability, Lazy Loading, Web Performance Optimization (WPO), SSG, Static Site Generators, Server-side Rendering (SSR), Scalability, Search Engine Optimization (SEO), Google Cloud Functions, System Architecture, RESTFul APIs, Identity & Access Management (IAM), Continuous Integration (CI), Startups, Artificial Intelligence (AI), Data Engineering, Automation, Playwright, Puppeteer, Selenium, Amazon ElastiCache, Geolocation, Google Maps API, DevOps
Full-stack Developer (via Toptal)
2022 - 2022
Pfizer - PGS Operations Insights
- Integrated three projects into one successfully, necessitating substantial enhancements in database architecture, record synchronization, logic flow, and API functionality, resulting in a 300% increase in overall system efficiency.
- Implemented a usage tracking system to provide feedback for several departments: marketing, R&D, complaints, etc.
- Revitalized the existing codebase, enhancing CI/CD pipelines and streamlining the overall development process, resulting in a 40% reduction in deployment time and a 30% reduction in post-deployment errors.
Technologies: CSS, HTML, React, API Development, Docker, Kubernetes, PostgreSQL, JavaScript, Node.js, Full-stack, GraphQL, Performance, HTML5, Leadership, Architecture, REST APIs, Data Architecture, Back-end, Supabase, Hasura, Python, Firebase, Ruby, AWS Fargate, Security Design, Software Architecture, Next.js, Google Cloud Platform (GCP), GitHub, APIs, Mobile, Web Development, Amazon Simple Notification Service (SNS), Amazon Simple Queue Service (SQS), Lambda Functions, Amazon Aurora, Apache Kafka, Test-driven Development (TDD), CI/CD Pipelines, Automated Testing, Full-stack Development, Containerization, User Experience (UX), User Interface (UI), Algorithms, Material UI, Analytics, VWO, A/B Testing, Web Usability, Technical Leadership, UX Design, Mobile First, AWS Amplify, Documentation, Writing & Editing, Code Review, Software Development, Application State Management, Caching, Core Web Vitals, ECMAScript (ES6), Front-end Architecture, Web Scalability, Lazy Loading, Web Performance Optimization (WPO), SSG, Static Site Generators, Server-side Rendering (SSR), Scalability, Search Engine Optimization (SEO), RESTFul APIs, Continuous Integration (CI), Data Engineering, Reverse Engineering, Automation, Puppeteer, Selenium, Amazon ElastiCache, Terraform, DevOps
Full-stack Developer
2021 - 2021
Pfizer
- Collaborated with Pfizer on a COVID-19 project. Created an automated CI/CD pipeline. This allowed us to move to a continuous delivery model, shipping to production many times per week.
- Fixed important issues with calculations of research materials that were causing trouble to several departments.
- Updated all dependencies and moved DevOps infrastructure to a new stack, which resolved deployment and security issues.
Technologies: CSS, JavaScript, HTML, Node.js, React, Full-stack, GraphQL, Next.js, PostgREST, Docker, Kubernetes, PostgreSQL, Performance, HTML5, Leadership, Architecture, REST APIs, Data Architecture, Back-end, Supabase, Hasura, Python, Ruby on Rails (RoR), Ruby, AWS Fargate, Security Design, Software Architecture, Google Cloud Platform (GCP), GitHub, APIs, Mobile, Web Development, Amazon Simple Notification Service (SNS), Amazon Simple Queue Service (SQS), Lambda Functions, Amazon Aurora, Apache Kafka, Test-driven Development (TDD), Heroku, CI/CD Pipelines, Automated Testing, Full-stack Development, Containerization, User Experience (UX), User Interface (UI), Algorithms, Material UI, Analytics, VWO, A/B Testing, Web Usability, Technical Leadership, Mobile First, AWS Amplify, Documentation, Writing & Editing, Code Review, Software Development, Application State Management, Caching, Core Web Vitals, ECMAScript (ES6), Front-end Architecture, Web Scalability, Lazy Loading, Web Performance Optimization (WPO), Server-side Rendering (SSR), Scalability, Search Engine Optimization (SEO), RESTFul APIs, Continuous Integration (CI), Data Engineering, Reverse Engineering, Automation, Puppeteer, Selenium, Amazon ElastiCache, Terraform, DevOps
Senior Software Engineer
2021 - 2021
GitHub
- Orchestrated the implementation of security and privacy protocols, aligning with GDPR standards.
- Demonstrated initiative by independently resolving a recurrent email notification issue, resulting in a 20% reduction in deployment process time.
- Ensured the integration of microservices through integration and functional testing, reducing system integration issues by 40% and bolstering overall system stability.
Technologies: Security, Privacy, Data Privacy, General Data Protection Regulation (GDPR), Web Security, Regulations, SQL, PostgreSQL, CouchDB, Amazon Web Services (AWS), AWS Lambda, Performance, HTML5, Leadership, Architecture, REST APIs, Back-end, Python, Ruby on Rails (RoR), Ruby, AWS Fargate, Security Design, Next.js, Google Cloud Platform (GCP), GitHub, APIs, Web Development, Amazon Simple Notification Service (SNS), Amazon Simple Queue Service (SQS), Lambda Functions, Amazon Aurora, Apache Kafka, Test-driven Development (TDD), Heroku, CI/CD Pipelines, Automated Testing, Full-stack Development, Containerization, User Experience (UX), User Interface (UI), Algorithms, Material UI, Analytics, A/B Testing, Web Usability, Mapbox, Technical Leadership, AWS Amplify, Documentation, Writing & Editing, Code Review, Software Development, Application State Management, Caching, Core Web Vitals, ECMAScript (ES6), Front-end Architecture, Web Scalability, Web Performance Optimization (WPO), Server-side Rendering (SSR), Scalability, Search Engine Optimization (SEO), RESTFul APIs, Identity & Access Management (IAM), Continuous Integration (CI), Data Engineering, Reverse Engineering, Puppeteer, Selenium, Amazon ElastiCache, Terraform, DevOps
Senior UI Developer
2018 - 2021
Cisco
- Entrusted with enhancing the application's security profile. Conducted vulnerability assessments and implemented supplementary layers of security controls.
- Engineered and fortified 40 new functionalities successfully while addressing over 100 bugs. This effort led to an 11% improvement in performance.
- Strengthened the project's robustness by adding and refining over 100 test cases, effectively covering 20% of the overall functionality.
- Collaborated with the entire cross-functional team actively to ensure the seamless and precise execution of tasks.
- Engaged closely with a diverse, globally dispersed cross-functional team spanning 30 countries to guarantee the smooth and accurate completion of tasks.
Technologies: Git, Jira, InVision, Kubernetes, Docker, Go, Node.js, Redux, React, JavaScript, HTML5, Architecture, REST APIs, Back-end, Security Design, GitHub, APIs, Web Development, Lambda Functions, Apache Kafka, Test-driven Development (TDD), CI/CD Pipelines, Containerization, User Experience (UX), User Interface (UI), Algorithms, Analytics, A/B Testing, Web Usability, Technical Leadership, Documentation, Writing & Editing, Code Review, Software Development, Application State Management, Caching, ECMAScript (ES6), Front-end Architecture, Web Scalability, Web Performance Optimization (WPO), Scalability, RESTFul APIs, Automation, Selenium
Front-end Developer
2018 - 2018
DecisionMapper
- Assumed the responsibility of delivering security reports and addressing vulnerabilities every two sprints (four weeks).
- Facilitated seamless collaboration among a diverse team of 10 departments encompassing various roles, including accounting, finance analysts, R&D, and managers.
- Provided mentorship and guidance to a junior developer.
Technologies: Tables, MongoDB, JavaScript, Node.js, Redux, React, HTML5, REST APIs, Ruby on Rails (RoR), GitHub, APIs, Web Development, CI/CD Pipelines, Containerization, User Experience (UX), User Interface (UI), Algorithms, Analytics, A/B Testing, Web Usability, Documentation, Writing & Editing, Code Review, Software Development, Application State Management, Caching, ECMAScript (ES6), Front-end Architecture, Web Scalability, Web Performance Optimization (WPO), Scalability, Advertising Technology (Adtech), RESTFul APIs, Automation, Selenium, Google Maps API
Software Engineer
2017 - 2018
Deluxe Entertainment Services
- Created 17 functionalities on the UI (authentication, modal, static page generator), that represented 40% of the app's functionality in total.
- Introduced two new development tools (Prettier and UglifyJS2), which increased the speed of development and build of the project by 100%.
- Developed cross-browser and cross-environment pages using CSS, HTML, and JavaScript.
Technologies: Videos, Node.js, TypeScript, Redux, React, HTML5, REST APIs, Ruby on Rails (RoR), GitHub, APIs, Web Development, CI/CD Pipelines, User Experience (UX), User Interface (UI), Algorithms, Analytics, A/B Testing, Web Usability, Documentation, Writing & Editing, Code Review, Software Development, Application State Management, Caching, ECMAScript (ES6), Front-end Architecture, Web Scalability, Web Performance Optimization (WPO), Scalability, RESTFul APIs, Automation, Selenium
Software Engineer
2016 - 2017
EPAM Systems
- Rewrote two massive applications with the new UI, which gave a jump in performance by 300%. Received many notes of thanks from project managers and the company shareholders.
- Brought code review and test coverage into projects.
- Managed and guided two junior front-end developers.
- Cast the technologies and established the font-end architecture.
Technologies: HTML, CSS, Bash, Angular, Redux, React, HTML5, REST APIs, GitHub, APIs, Web Development, CI/CD Pipelines, User Experience (UX), User Interface (UI), Algorithms, Analytics, A/B Testing, Web Usability, Documentation, Writing & Editing, Software Development, Application State Management, Caching, ECMAScript (ES6), Front-end Architecture, Web Scalability, Web Performance Optimization (WPO), Scalability, RESTFul APIs, Google Maps API
Experience
Finance Related App
This was a project for one of the Big 4 accounting firms and had a complicated business logic with a very limited time-frame. It is under NDA.
My responsibilities:
-Provided security reports every two sprints (four weeks) and successfully fixed security vulnerabilities that increased the security level of the project.
-Leveraged one-way data binding through the scope in the applications built on React.js.
-Developed a financial web application using React and Node.js for MVW/MVC.
-Created a cloud-based solution for the application using Node.js, PDF.js, MongoDB, MS SQL Server, and integrated it into a proprietary framework.
My responsibilities:
-Provided security reports every two sprints (four weeks) and successfully fixed security vulnerabilities that increased the security level of the project.
-Leveraged one-way data binding through the scope in the applications built on React.js.
-Developed a financial web application using React and Node.js for MVW/MVC.
-Created a cloud-based solution for the application using Node.js, PDF.js, MongoDB, MS SQL Server, and integrated it into a proprietary framework.
EPM-TIME
The primary usage of EPM-TIME is to record hours spent on a task for a particular project. EPAM had an older version called PMC. My team implemented a new front end and back end for the app. Initially, I maintained the front-end side alone before being joined by two extra junior developers. I then played the lead front-end developer role on my team.
I created the view from scratch, including styles (not design) using HTML, CSS, and logic. I contributed to the behavior of the app, the selection of tools, and ideas to increase performance. I shared tasks between the front-end team and guided junior developers.
Within a short period, our app performance increased by 300%. It proved to be bug-free and was loaded with new features compared to the previous one. The app is currently in production. EPAM shareholders were very impressed by the progress made. I received several thankful notes.
I created the view from scratch, including styles (not design) using HTML, CSS, and logic. I contributed to the behavior of the app, the selection of tools, and ideas to increase performance. I shared tasks between the front-end team and guided junior developers.
Within a short period, our app performance increased by 300%. It proved to be bug-free and was loaded with new features compared to the previous one. The app is currently in production. EPAM shareholders were very impressed by the progress made. I received several thankful notes.
EPM-CTC Assistant (July 2016 - January 2017)
This app is responsible for tracking expenses, planning budgets, and providing data to accountants. The EPAM-CTC assistant is utilized by thousands of every day. The flexible and key financial options of the app make the assistant a very important internal tool.
I was part of the front-end developers and implemented new features, adjusted existing parts, and fixing bugs. App performance was enormously boosted. The application loaded and rendered pages much more quickly with no necessary Ajax calls. The easy-to-navigate interface was bug-free. Users were very satisfied with a new look and performance.
I was part of the front-end developers and implemented new features, adjusted existing parts, and fixing bugs. App performance was enormously boosted. The application loaded and rendered pages much more quickly with no necessary Ajax calls. The easy-to-navigate interface was bug-free. Users were very satisfied with a new look and performance.
Cisco SecureX Orchestrator
https://www.cisco.com/site/us/en/products/security/xdr/index.htmlAutomate routine tasks with prebuilt workflows designed for everyday use cases, or create custom workflows using our intuitive low- to no-code drag-and-drop canvas. (Learn more: Cisco SecureX). This extensive project involved a team of around 50 professionals, and I served as the senior UI developer responsible for implementing the low-code web application. It stands out as one of my favorite projects due to its innovative approach and impactful results.
PGS Operations Insights
I led the development of Pfizer’s internal dashboard for managing lab operations and research, built from the ground up to support 10,000 active users. As team lead on two key projects, I later integrated three essential services, including the ones I worked on. The project involved creating design solutions, synchronizing multiple database records, implementing CLI tools, and updating the user interface. The success of this initiative was made possible through close collaboration with the analysis, research, and UX design teams.
Onelayer SaaS Solution
https://onelayer.com/Onelayer is a SaaS solution built entirely from scratch for security, monitoring, and tracking over private cellular networks. I played a key role in designing and implementing the web services, with the back end powered by microservices written in Go and the front end built using React. The system communicates through GraphQL, gRPC, and Kafka and is designed to be event-driven and capable of running on both cloud and private infrastructure. Additionally, we incorporated robust security layers over private cellular networks. This project's success resulted from exceptional teamwork and seamless communication across all involved.
Efficient Resource Management System for Construction Company
ACHIEVEMENTS
• Served as the architecture and engineering lead for a major local construction and development company, streamlining business processes across various construction stages.
• Designed and implemented a robust system to manage critical functions, including permission assignment, material provisioning, and the purchasing or rental of equipment.
• Led the development team leveraging a modern tech stack: Node.js (Express.js, NestJS), MongoDB, React, Docker, and Airflow.
The system significantly enhanced operational efficiency and resource utilization, achieving key organizational objectives. I'm proud of the impactful results and would be delighted to showcase our work.
• Served as the architecture and engineering lead for a major local construction and development company, streamlining business processes across various construction stages.
• Designed and implemented a robust system to manage critical functions, including permission assignment, material provisioning, and the purchasing or rental of equipment.
• Led the development team leveraging a modern tech stack: Node.js (Express.js, NestJS), MongoDB, React, Docker, and Airflow.
The system significantly enhanced operational efficiency and resource utilization, achieving key organizational objectives. I'm proud of the impactful results and would be delighted to showcase our work.
Education
2013 - 2016
Bachelor's Degree in Computer Science
Kazakh University of Technology and Business - Nur-Sultan, Kazakhstan
2010 - 2013
Coursework in Robotics
Nazarbayev University - Nur-Sultan, Kazakhstan
Certifications
OCTOBER 2024 - OCTOBER 2027
AWS Certified Solutions Architect – Professional
Amazon Web Services
JULY 2024 - JULY 2027
AWS Certified DevOps Engineer – Professional
Amazon Web Services
Skills
Libraries/APIs
React, Node.js, Context API, REST APIs, Three.js, WebGL, AWS Amplify, Puppeteer, Playwright, Google Maps API, Vue, PostgREST, API Development
Tools
Canvas, GitHub, Amazon Simple Notification Service (SNS), Amazon Simple Queue Service (SQS), Amazon ElastiCache, GCC, Terraform, InVision, Jira, Git, SOLIDWORKS, Puppet, AWS Fargate, AWS CloudFormation, AWS CodeBuild, AWS IAM, Apache Airflow
Languages
JavaScript, CSS, HTML, GraphQL, Go, TypeScript, Ruby, HTML5, Python, ECMAScript (ES6), SQL, Java, Bash, C, C++
Frameworks
Redux, Koa, Jest, Svelte, Next.js, Tailwind CSS, Material UI, Ruby on Rails (RoR), Cypress, React Native, Selenium, Angular, gRPC, NestJS
Paradigms
Design Patterns, Automation, Test-driven Development (TDD), UX Design, Web Performance Optimization (WPO), Search Engine Optimization (SEO), Continuous Integration (CI), Automated Testing, DevOps, Good Clinical Practice (GCP), CQRS, Event Sourcing, REST, Microservices Architecture, Event-driven Architecture
Platforms
Amazon Web Services (AWS), AWS Lambda, Google Cloud Platform (GCP), Apache Kafka, Docker, Kubernetes, Firebase, Blockchain, Mobile, Heroku, VWO, Mapbox, Linux, AWS IoT
Storage
PostgreSQL, Hasura, MySQL, Databases, Amazon Aurora, MongoDB, CouchDB, ArangoDB, Redis, InfluxDB, Neo4j
Other
SVG, Apollo, Full-stack, Performance, Leadership, Architecture, Industrial Internet of Things (IIoT), Back-end, Supabase, Web Scraping, Data Scraping, Security Design, Software Architecture, APIs, Web Development, Lambda Functions, CI/CD Pipelines, Full-stack Development, User Experience (UX), User Interface (UI), Algorithms, Analytics, A/B Testing, Web Usability, Technical Leadership, Mobile First, Documentation, Writing & Editing, Team Leadership, Code Review, Software Development, Application State Management, Caching, Core Web Vitals, Front-end Architecture, Web Scalability, Lazy Loading, SSG, Static Site Generators, Server-side Rendering (SSR), Scalability, Zustand, Google Cloud Functions, System Architecture, RESTFul APIs, Gin Tonic, Identity & Access Management (IAM), Startups, SvelteKit, Internet of Things (IoT), Data Architecture, Crypto, CTO, Containerization, Web3, Advertising Technology (Adtech), Artificial Intelligence (AI), Data Engineering, Tables, Videos, Security, Privacy, Data Privacy, General Data Protection Regulation (GDPR), Web Security, Regulations, Robotics, Mechatronics, Signals, Image Recognition, Cloud Computing, System Design, System Architecture Design, AWS CodePipeline, Domain-driven Design (DDD), Reverse Engineering, Geolocation
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