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2.7
2.7
100%
$39 USD / Hour
・

Czech Republic (1:46 AM)
・
Joined on October 30, 2025
$39 USD / Hour
・
I design and ship systems that think, talk, and scale customer-facing apps, internal dashboards, and AI-powered workflows that remove manual work and unlock growth. What you get: - Clear dashboards and auditable processes - Stable, secure and maintainable builds your team can own - Fewer clicks, fewer errors, faster response times Stack and superpowers: - Frontend: React, Nextjs, typescript, Vue, Angular - Mobile: React Native, Flutter - Backend: Nodejs, Express, Nestjs, C#/.NET Core/ASP.NET MVC - Data: PostgreSQL, mongoDB, Sql server with Prisma or Entity Framework - Automation: [login to view URL], N8N, Zapier, GoHighLevel (GHL) - AI: GPT-4 via OpenAI API for chatbots, content and decisionn flows - Scripting/Logic: Python for data processing and API orchestration - Integrations: Landbot, Twillio, Slack, Discord, Notion, Airtable, Google Sheets Signature solutions: - AI support assistants and lead funnels that qualify, route and follow up 24/7 - Internal control panels for ops, billing, and analytics (React/Next + Node/Next or .NET) - Event-driven automations that stitch tools together (n8n/Make/Zapier + Python + GPT-4) How we'll work 1. Blueprint: a focused plan with data flows, success metrics, and scope 2. Build: iterative delivery with demo checkpoints 3. Launch: docs, handover, and observability for smooth scaling New to Freelancer, not new to shipping
Verifications
On time
100%
On budget
100%
Accept rate
100%

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mars Gambling Website

Mars Gambling Website

Mars Gambling Website

Expondo Ecommerce

Expondo Ecommerce

Expondo Ecommerce

Expondo Ecommerce

Alirok

Alirok

Alirok

Alirok

Alirok

Alirok

Alirok

Alirok

SFR Analytics

SFR Analytics

SFR Analytics

SFR Analytics

SFR Analytics

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mobile development for earle

Mars Gambling Website

Mars Gambling Website

Mars Gambling Website

Expondo Ecommerce

Expondo Ecommerce

Expondo Ecommerce

Expondo Ecommerce

Alirok

Alirok

Alirok

Alirok

Alirok

Alirok

Alirok

Alirok

SFR Analytics

SFR Analytics

SFR Analytics

SFR Analytics

SFR Analytics

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus

Stellar Menus
Oleksandr did great work on this high priority project, his high availability and skillset in React Native made this project with an extremely short deadline possible. [20 November, 2025] Oleksandr did great work on this React Native project which had a very short deadline. Communication and promptness in responded helped immensely in getting this done on time
Luiz R.
@PereiraR
•

Lisbon, Portugal
•
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Experience
Sr.Software Engineer
Feb, 2022 - Aug, 2025
•
3 years, 6 months
Key Development
Feb, 2022 - Aug, 2025
•
3 years, 6 months
- Spearheaded the architecture and delivery of end-to-end full stack solutions, overseeing both frontend and backend layers in the context of Key Developments's product offerings. - Designed and built robust RESTful APIs and microservices using nodejs, .NET to support high scale web and mobile applications for clients in e-commerce, enterprise software and Saasdomains. - Established and maintained CI/CD pipelines, containerised deployments (Docker, Kubernetes), cloud infrastructure (AWS/Azure)

Sofia, Bulgaria
Feb, 2022 - Aug, 2025
•
3 years, 6 months
Sr.Full stack developer
Sep, 2019 - Apr, 2021
•
1 year, 7 months
Onectus technologies
Sep, 2019 - Apr, 2021
•
1 year, 7 months
- Delivered full stack solutions from frontend through to backend for e-commerce, Saas and marketplace products, aligning with Onectus's business focus on MVPs & custom web platforms. - Built fronted using moder frameworks like React, Vue, Angular with tyupescript while developing backend using nodejs, .NET core, python - Participated in agile development cycles; sprint planning, backlog grooming, code reviews, pair programming, and mentoring junior developers where applicable.

Kaunas, Lithuania
Sep, 2019 - Apr, 2021
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1 year, 7 months
Full Stack Developer
Feb, 2016 - Jun, 2019
•
3 years, 4 months
Siesta Labs
Feb, 2016 - Jun, 2019
•
3 years, 4 months
- Spearheaded the development of end-to-end digital solutions: designed and implemented both client-facing web apps and server-side services, aligning with Siesta Labs' mission to turn "complexity into elegantly scalable solutions" - Contributed to performance optimisation, maintainability improvements and technical debt reduction; for example improved appolication load times, refactored legacy code, and introduced automated testing to reduce bug count and speed up release cycles.

Prague, Czech Republic
Feb, 2016 - Jun, 2019
•
3 years, 4 months
Education
Czech Technical University in Prague
2005 - 2009
•
4 years
Bachelor's degree, Computer Science

Czech Republic
2005 - 2009
•
4 years