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Ayaz – JavaScript, Node.js, Java, experts in Lemon.io

Ayaz

From Romania (UTC+3)flag

Senior Full Stack Web Developer
Lemon.io stats
1
projects done
588
hours worked

Ayaz – JavaScript, Node.js, Java

Ayaz could become a doctor — he studied medicine at a university. But then he decided that development is the best healing. Meet a Senior Full Stack Web Developer with over 4 years of experience. Ayaz works with different technologies, such as Node.js, Java, Javascript. His portfolio includes working on financial products, telecommunication software, and software for private clinics. He is a positive guy, and can tell about his experience with such a huge piece of interest that it could not leave anybody untouched.

9 years of commercial experience in
Advertising
AI
Banking
Data analytics
Healthcare
Healthtech
Marketing
Social media
Telecommunications
Financial asset management
Main technologies
JavaScript
1.5 years
Node.js
3.5 years
Java
4 years
Additional skills
Spring
Redis
AWS
MySQL
React
MongoDB
Angular
React Native
Direct hire
Possible
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Experience Highlights

Senior Software Engineer
Jul 2023 - Ongoing2 years 11 months
Project Overview

A marketing automation platform for the music industry, helping artists, record labels, and managers grow and monetize their fanbases through automated advertising campaigns, performance reporting, and actionable insights across digital platforms.

Responsibilities:
  • Designed an event-driven microservices architecture using NATS.io to support scalable backend workflows and asynchronous platform communication.
  • Built an AI assistant that answers customer questions and generates campaign reports by securely invoking backend tools against live platform data.
  • Built integrations with multiple advertising and streaming platforms, including Meta, TikTok, Google, Spotify, and various other platforms.
  • Architected the AWS infrastructure from scratch, including VPC, ECS, RDS, and S3, and automated CI/CD pipelines for reliable production delivery.
  • Maintained no recorded application-level downtime since launch.
  • Developed ETL pipelines that load advertising and streaming performance data into Snowflake for analytics, reporting, and customer-facing insights.
  • Implemented fine-grained multi-tenant authorization using OpenFGA, ensuring backend services and AI agent tools only access authorized customer data.
  • Owned backend delivery on a two-engineer team as the platform and user base grew.
Project Tech stack:
Node.js
Typescript
AWS
AWS CloudFormation
Docker
PostgreSQL
React
Amazon ECS
Amazon RDS
Amazon EC2
Amazon S3
Amazon CloudFront
Snowflake
ETL
NATS.io
Microservices
LLM
OpenAI API
AI chatbot development
Auth0
Cloud Architecture
DBT
Fivetran
CI
CD
Software Engineer
Nov 2021 - Dec 20232 years 1 month
Project Overview

A telecom SMS platform delivering real-time messages over carrier networks via SMPP.

Responsibilities:
  • Engineered real-time SMS delivery systems with SMPP integrations for carrier-grade messaging traffic.
  • Designed and managed high-availability AWS infrastructure, including VPC, EC2, RDS, and VPN networking.
  • Deployed changes to live SMS infrastructure using careful release and cutover processes to minimize delivery disruption.
  • Developed and maintained Java Spring Boot services alongside the core SMS delivery infrastructure.
  • Supported production systems where reliability, uptime, and message throughput were business-critical.
  • Delivered maintenance, infrastructure improvements, and new feature development across two separate long-term engagements.
Project Tech stack:
Java
Spring
MySQL
AWS
Node.js
Typescript
NATS.io
Ansible
Network administration
Senior Software Engineer
Sep 2021 - Aug 20231 year 11 months
Project Overview

A remote care platform that helps seniors live independently at home. Motion-triggered in-home cameras stream to trained virtual caregivers, who monitor activity, perform scheduled check-ins, dispatch help in emergencies, and generate daily activity reports that families can share with healthcare providers.

Responsibilities:
  • Built the platform’s backend end to end as the sole backend engineer, taking the system from initial architecture through production operation.
  • Architected the AWS infrastructure from scratch, including VPC, EC2, ECS, ALB, RDS, and VPN networking.
  • Set up CI/CD pipelines using AWS CodePipeline to support reliable deployments and maintenance workflows.
  • Engineered live IP camera streaming from in-home cameras using RTSP ingest over private VPN tunnels, initially delivering streams through WebRTC and later migrating to HLS when lower latency was no longer a requirement.
  • Designed the streaming architecture so cameras could connect securely without requiring client-side Wi-Fi configuration.
  • Built AI-driven activity analysis to automatically detect and tag monitored activity in pilot workflows alongside human caregivers.
  • Designed the AI activity analysis system to help increase the number of clients each virtual caregiver could safely monitor.
  • Developed backend services in Node.js and Go-based streaming services for video processing and delivery.
  • Maintained approximately 99.9% platform availability, with recorded downtime primarily caused by an upstream network provider rather than application-level failures.
  • Continued supporting the platform through a maintenance contract after the initial engagement, with the systems still running in production.
Project Tech stack:
Node.js
React
AWS
Cloud Architecture
WebRTC
PostgreSQL
Redis
CI
CD
Backend Engineer — Java
Jan 2020 - Nov 20211 year 9 months
Project Overview

One of Europe’s largest banking groups. As part of a small five-person engineering team, I delivered backend integrations from technical design through production release.

Responsibilities:
  • Developed Java Spring Boot microservices within an event-driven architecture.
  • Built client integration services connecting internal banking platforms with external systems.
  • Owned backend features from technical design through implementation, testing, and production release.
  • Collaborated with business analysts, project managers, and engineering teammates to translate business requirements into technical solutions.
  • Delivered production-grade backend services in a regulated banking environment with strong reliability and maintainability expectations.
Project Tech stack:
Java
Spring Boot
WebSocket
Microservices

Education

2018
Medicine
Master's
2018
Medicine
Master's

Languages

English
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