Ayaz – Java, JavaScript, Node.js, 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 – Java, JavaScript, Node.js

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
Java
4 years
JavaScript
1.5 years
Node.js
3.5 years
Additional skills
Spring
MySQL
AWS
Redis
React
Angular
React Native
MongoDB
Direct hire
Possible
Ready to get matched with vetted developers fast?
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Experience Highlights

Senior Software Engineer
Aug 2023 - Ongoing3 years
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:
  • Joined as a founding engineer and shaped the company's core architecture, infrastructure, and engineering practices from the ground up.
  • Architect and operate the production AWS environment end to end — covering deployment, operations, security, cost, and reliability — acting as the go-to engineer for anything infrastructure-related.
  • Drive and take final responsibility for architectural decisions across Node.js/TypeScript services, React applications, and the data platform, aligning technical direction with business priorities.
  • Designed, built, and own end to end the ingestion and transformation pipelines into Snowflake with dbt, integrating third-party data sources and advertising platforms.
  • Introduced and championed event-driven service communication with NATS, improving decoupling and scalability across services.
  • Partner closely with the founders and non-technical stakeholders, translating business goals into technical roadmaps and communicating trade-offs clearly.
  • Mentor and support teammates through code review, pairing, and knowledge sharing, helping raise the engineering bar as the team grows.
  • Enabled and supported platform growth through a period in which company revenue increased more than 5x.
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
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
Software Engineer
Oct 2018 - Feb 20201 year 4 months
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

Education

2018
General Medicine
Master's

Languages

Romanian
Advanced
Arabic
Intermediate
English
Advanced

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