Open to opportunities

Денис Беккер

@0005285

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I build reliable Laravel backend systems, fintech products, and high-load integrations end-to-end.

Georgia

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I've built production systems at DigitLux, including a high-load IoT utility-metering platform serving roughly 70,000 connected devices and 10,000 MAU, plus VKCars, a real-time car-booking platform. I design Laravel backends end-to-end, from schemas and REST APIs to queues, integrations, caching, and service extraction.

At Genext, I led the architecture and development of GenextWallet from scratch: secure crypto transactions, fiat-to-crypto onboarding, KYC/AML integrations, and banking-grade mobile security. The product reached 99% crash-free performance and generated revenue.

I've also delivered medical AI and enterprise web products at Xmethod, including LLM pipelines using RAG, OpenAI, and Whisper, and a React application for an SAP conference in three weeks.

Across 15+ years in PHP development, I’ve owned production reliability with Docker, CI/CD, monitoring, database tuning, and automated rollback. I lead teams of up to five engineers through architecture decisions, code review, mentoring, and practical translation of business requirements into technical solutions.

Experience

Work history, roles, and key accomplishments

Senior Fullstack Engineer / Lead

Xmethod

Jan 2025 - Dec 2026 (1 year 11 months)

Designed an end-to-end LLM pipeline for a medical AI assistant, including model selection, prompt engineering, and RAG. Delivered production Next.js applications and a React app for a SAP conference from scratch in three weeks.

LLM OpenAI Whisper RAG Next.js React 19 TypeScript ISR Prompt Engineering

Senior Backend / Fullstack Engineer

DigitLux

Jan 2024 - Dec 2026 (2 years 11 months)

Designed and built backend architecture for high-load B2B IoT/utility metering and car booking platforms using Laravel 11/12, PostgreSQL, MySQL, Redis, and REST APIs. Implemented queue-based integrations, real-time features, and production reliability with Docker, CI/CD, and monitoring.

Laravel PostgreSQL MySQL Redis REST APIs JWT Sanctum RBAC TypeScript Pinia Docker GitHub Actions PHPUnit Sentry WebSockets Reverb Firebase S3

Tech Lead / Senior Engineer

Genext

Jan 2023 - Dec 2025 (2 years 11 months)

Led a team of three engineers to architect and build a crypto-wallet product from scratch, including secure transactions, fiat-to-crypto on-ramp, and KYC/AML integration. Implemented Go microservices and React frontend with complex real-time state.

Go React TypeScript Redux toolkit Microservices KYC AML Sumsub Onfido Biometrics 2FA

Software Engineer

SimplyLetter

Jan 2019 - Dec 2023 (4 years 11 months)

Built invoice automation and print dispatch systems, including document parsing, validation, synchronization, and integrations. Worked with a large legacy codebase in a German engineering environment.

C#Validation Synchronization Integration

PHP Developer → IT Systems Architect

Government Sector

Jan 2011 - Dec 2019 (8 years 11 months)

Developed commercial PHP applications and later architected large-scale government information systems, focusing on high-load portals, database optimization, and team leadership.

PHP MySQL 1C Bitrix Query Optimization Indexing Replication Architecture Team Leadership