Ruslan Dmitrijev
Senior / Lead Full Stack Software Engineer
With 20+ years of experience designing and building high-traffic, business-critical systems across Fintech, Crypto, eCommerce, iGaming, real-time web platforms and applications.
Tallinn, Estonia
+372 5804 0922
Experience
Senior Full Stack Software Engineer
Orbital — Crypto Payments
Tech: TypeScript, AWS, Serverless, Lambda, GraphQL, MongoDB, DynamoDB
- Evolved a 100% cloud-native serverless application on AWS stack.
- Owned and engineered core functionality for a high-volume international crypto payments platform.
- Designed and implemented secure, compliant flows in a complex regulatory environment.
- Provided technical support and troubleshooting for key customers and internal teams.
Lead Software Engineer
Black Labz — Crypto iGaming Startup
Tech: TypeScript, GCP, Svelte, React, Redis, PostgreSQL, Kubernetes
- From 10K to 10M users in less than a year.
- Architected and led development of core functionality for a high-load crypto platform in a team of 5+ engineers.
- Conducted technical interviews, screening and onboarded new engineers.
- Collaborated directly with founders and stakeholders to refine requirements and translate business needs into technical solutions.
Software Engineer
Glia — Digital Customer Service
Tech: Elixir, Ruby, Node, React, PostgreSQL, Redis, AWS, Kubernetes
- Improved performance and reliability of real-time customer support services used by enterprise banking and insurance clients.
- Led and participated in large cross-team initiatives, from architecture discussions to implementation and rollout.
- Mentored engineers, conducted technical interviews and supported onboarding of new team members.
- Improved testing, documentation and continuous delivery practices across multiple services.
Senior Full Stack Developer
Creditstar — International Consumer Finance
Tech: PHP, JavaScript, PostgreSQL, Redis, Docker, DevOps
- Developed and maintained high-precision loan automation and accounting systems.
- Improved reliability, performance and structure of critical codebases across multiple markets.
- Managed production releases and worked closely with accounting, risk and customer support teams.
- Enhanced user experience and stability of internal and customer-facing applications.
Plugin Developer
Ginger Payments — Payment Service Provider
Tech: PHP, JavaScript, Python, Angular, MySQL, DevOps
- Built and maintained open-source payment plugins for major e-commerce platforms and custom systems.
- Streamlined plugin development, testing and release workflows for faster and safer iterations.
- Integrated payment gateways and methods into merchant portals with a focus on robustness and usability.
- Provided 2nd and 3rd line technical support, debugging complex payment and integration issues.
Back-end Developer
Ticketscript — Digital Self-Ticketing Systems
Tech: PHP, Node, JavaScript, AWS, Docker, PostgreSQL
- Developed and evolved high-traffic online ticketing platform components in an international Scrum team.
- Implemented payment methods, API endpoints and performance optimisations across multiple services.
- Collaborated with architects and QA to establish smooth continuous integration and deployment workflows.
- Worked with data aggregation and analysis for reporting, insights and monitoring.
Senior / Web Developer — Earlier Roles
Abbywinters, GMBill, Multisafepay, Talentor, eXact, HAKES
Domains: Billing, eCommerce, Recruiting, Education, Adult industry
- Built and scaled custom CMS platforms for high-traffic content websites.
- Developed high-risk billing and payment processing systems with fraud prevention and pattern recognition.
- Collaborated on international recruiting and student exchange platforms with complex access control and automation.
- Implemented merchant APIs, payment inegrations, reporting dashboards and data aggregation pipelines.
Profile
Senior full stack software engineer with 20+ years of hands-on experience building and scaling high-traffic systems in Fintech, Crypto, eCommerce, iGaming, customer support and real-time web services and applications. Comfortable owning systems end-to-end — from data modelling and backend architecture to modern frontends, cloud infrastructure and operational workflows.
Strong at quickly understanding complex domains, untangling legacy codebases and turning changing business requirements into pragmatic, secure and maintainable solutions. Security-conscious, experienced with a wide range of languages, frameworks and cloud platforms, integrations with third-party APIs and payment providers.
Collaborative and highly sociable, with experience in interviewing, mentoring, team leadership and working in agile environments with multidisciplinary, international teams.
Experienced in remote and hybrid environments across multiple EU/EMEA time zones; authorised to work in the EU.
Full Stack Engineering
Software Architecture
Agile
Start-up Advisory
Team Leading
Cloud & DevOps
Fintech & Crypto
High-Traffic Applications
Security
Core Skills
Primary Focus
TypeScript/Node.js, PHP, AWS/GCP, cloud/distributed systems.
Programming Languages
TypeScript, PHP, Elixir, Ruby, Node, JavaScript, Java, Python
Backend Frameworks & Libraries
Serverless, GraphQL, Laravel, Nest, Express, Spring Boot, Phoenix, Sinatra, Ruby on Rails
UI/UX Frameworks & Libraries
React, Angular, Vue, Svelte, Tailwind, Bootstrap, Material
Cloud & DevOps
AWS, GCP, Azure, Terraform, Kubernetes, Docker, Jenkins
Data & Storage
PostgreSQL, MongoDB, DynamoDB, Redis, Elasticsearch
Event-Driven Architecture
Kafka, RabbitMQ, SQS, PubSub, EventBridge, WebSockets
Practices and Principles
Microservices, API, UI/UX, CI/CD, DevOps, Cloud, Agile
Languages
- Russian: Native
- English: Full professional proficiency
- Estonian: Professional working proficiency (B2)
- German: Elementary
- Dutch: Elementary
Education
- Tallinn University of Technology (TalTech) — Information Technology (incomplete), 2007
- Tallinn Russian Lyceum — Primary & Secondary Education, 1995-2007
Courses & Certifications
- AWS Architect Training — Amazon (2022)
- AWS for Developers — Amazon (2021)
- FOSDEM — Free and Open Source Developer Meeting (2015)
- Dutch PHP Conference — Amsterdam (2012, 2013)
- Scrum, Time & Project Management — Aarhus Business College
- DSI-Certified Employee (#236427) — Integrity-sensitive financial sector screening
Other Interests
Rock climbing
Snowboarding
Kayaking
Cycling
Hiking
Camping
Tennis
Acting