Slava Pocheptsov
Verified Expert in Engineering
Software Developer
Toronto, Canada
Toptal member since August 18, 2022
Slava is a dev lead with a robust technical and product-oriented background in healthcare, manufacturing, finance, and entertainment. For over the past decade, Slava has fostered effective team communication, built reliable infrastructures, and implemented proactive security practices. A few career highlights of his include building a CRM for an SMB, multiple startup projects, consulting with enterprises to automate delivery logistics for manufacturers, and creating vital healthcare solutions.
Portfolio
Experience
- Team Management - 10 years
- JavaScript - 10 years
- Ruby - 8 years
- Ruby on Rails (RoR) - 8 years
- Infrastructure as Code (IaC) - 7 years
- MySQL - 6 years
- Scrum - 5 years
- Agile Software Development - 5 years
Preferred Environment
Linux, Amazon Web Services (AWS), Ruby, Ruby on Rails (RoR), TypeScript, Docker, Web Development, Staffing, Agile Software Development, JavaScript
The most amazing...
...thing I've built was a secure cognitive platform that helps healthcare workers around the world; involved HIPAA compliance, AWS, and containerized environments.
Work Experience
Principal Software Engineer
Cambridge Brain Sciences
- Built the event-based architecture for a complex healthcare assessment platform, which was scaled and now supports over 500 clinics in eight time zones.
- Extended the standard Rails application structure with well-known design patterns like query, entity, command, handler, etc.
- Set AWS DevOps deployment processes; all infrastructure — Infrastructure as Code, performance monitoring, continuous HIPAA compliance with daily/on-change scanning. Typical traffic generates four requests per second and 4,000 unique users daily.
- Migrated from React with a Redux store and an API layer to the modern Hotwire stack in four months, experimented with Vite as an assets bundler, and built an isolated QA environment and automation coverage.
- Implemented a fast and secure graphic-rich PDF generation optimized to run with a one-to-three-second response time by keeping the workers' CPU (95th percentile) usage at less than the 20 percentile.
Senior Software Developer
Method Integration
- Built a certified sync engine with QuickBooks; this work included conflict resolution schemas, performance optimization, and secure connection options in 300+ multitenant installations.
- Improved a highly customized actions workflow for serverless no-code apps for SMBs with a QuickBooks data sync integration. The sync time was improved threefold after switching to incremental batch updates and multi-thread and multi-process runtime.
- Launched a highly performant action rules system with custom language grammar (LLVM) to compact definitions and implement security hardening.
Co-founder and CTO
Vente
- Built the MVP in three months; it resulted in 100+ exhibitors being contacted, 12 exhibits subscribing, and 750+ business participants using our service.
- Oversaw idea generation, product development, audience qualification, targeting, distribution channels, A/B testing, data-driven KPI metrics, and business model evaluation.
- Contributed to customer relationships, support and customization, the fundraising process, preparation of marketing materials, sales scripts and scenarios, and the start of building the sales funnels.
Tech Leader
Ciklum
- Integrated an order processing system with SAP, including materials management and a deep system refactoring; this work reduced order processing time by 40-55%.
- Implemented the new distributors' self-service system architecture, including decoupling services, helping with budgeting and goal definitions, establishing hiring goals, and successfully extending the team with seven multifunctional roles.
- Migrated a live system without downtime (approximately 120 GB of data); this included documenting and supporting the system, metrics definition (with a distributed collector), continuous monitoring, and a notification framework.
Team Lead of Application Solutions
Sphere Software
- Managed a team of four engineers to build a high-load media streaming app (2TB per month) and optimize performance. Migrated from on-premise servers to Azure with a 30% reduction in infrastructure costs and improved traffic spike handling.
- Led the team that prototyped a clinical trial supply chain management system (three months) and presented it to the client's funding committee; was involved in the project architecture, planning, code reviews, tech research, and core development.
- Created the ads integration of our client's app with Miramax, which included certifying the back-end data storage, securing data transfers, and coordinating the team, deployment, and support.
- Worked on a project and task estimation of an app for gold/jewelry online sellers with 1,000 US customers monthly; code reviews, initial structure build, tech investigation, fraud analysis detection, and complex business workflow (return/refund).
Software Developer
MWDN Ltd
- Learned development and organizational skills while working on highly regulated and mission-critical software products.
- Optimized databases, focusing on maintainability, migration processes and monitoring, automatic rollbacks, and deployment in over ten clinics worldwide.
- Worked on the user experience for an internal message dispatching configurator, HL7 processing bus, and integration with Microsoft BizTalk.
Experience
Cognitive Assessment Platform
The project required a full AWS DevOps lifecycle, Infrastructure as Code practice, security audits, performance monitoring (to ensure HIPAA compliance), a consumer API layer, and PDF report generation.
Education
Master's Degree in Informatics and Applied Mathematics
Kharkiv National University of Radioelectronics - Kharkiv, Ukraine
Certifications
HashiCorp Certified: Terraform Associate
HashiCorp
TS: Web Applications Development with Microsoft .NET Framework
Microsoft
Skills
Libraries/APIs
React, Stripe, Salesforce API, WinAPI, Windows Forms (WinForms), Facebook API, jQuery, Moq, FluentNHibernate, jqMobi, Handlebars, Terragrunt, LinkedIn API, QuickBooks API, Node.js
Tools
Git, Terraform, RSpec, Mantis, Jira, TeamCity, Cucumber, Turbo, Confluence
Languages
Ruby, JavaScript 6, JavaScript, Bash, HTML, TypeScript, Assembly, HTML5, Python, C#, PHP
Frameworks
Ruby on Rails (RoR), .NET, ADO.NET, NHibernate, ASP.NET MVC, Zend Framework, Knockout (Knockout.js), Bootstrap, NUnit, ASP.NET, Stimulus, Tailwind CSS, AngularJS, ASP.NET Identity
Platforms
Visual Studio Code (VS Code), Linux, Debian, Telerik, Windows Server 2008, Docker, Azure, Amazon Web Services (AWS)
Paradigms
Agile Software Development, Scrum, Object-oriented Programming (OOP), Event Sourcing, Agile Product Management, HIPAA Compliance, DevOps, Windows App Development, B2B, B2B2C, Scalable Application, Business to Business to Consumer (B2B2C)
Storage
MySQL, PostgreSQL, Databases, SQL Server 2000, SQL Server 2008, SQL Server 2014, Azure SQL, Cloud Deployment
Other
Technical Hiring, Team Management, Code Review, Web Development, Interviewing, Source Code Review, Windows Subsystem for Linux (WSL), Infrastructure as Code (IaC), Cloud Engineering, Task Analysis, Statistics, Probability Theory, OOP Designs, Graph Theory, Algorithms, Systems Analysis, DevExpress, Dynamic Load Balancing, Windows Communication Foundation (WCF), SAP, Cloudflare, Coaching, Hiring, Talent Management, Electronic Medical Records (EMR), Performance Optimization, Monitoring, DevOps Engineer, AWS DevOps, PDF, Amazon RDS, Vite, Repository Pattern, Authorization, Multitenancy, Identity, Intuit QuickBooks, APIs, Web App Development, Health, Healthcare IT, Health IT, Neuroscience, UI Development, Staffing, Interviews, Client Interviews, Business Analysis, SEO Marketing, Business to Business (B2B), Planning, Cloud, SaaS, CTO, Architecture, Full-stack Development, Back-end, Full-stack, Scalability, Scalable Architecture
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