Levon is available for hire

Levon Sargsyan

Verified Expert in Engineering

Full-stack Developer

Location

Yerevan, Armenia

Toptal Member Since

June 4, 2022

Levon is a full-stack developer and tech manager with over eight years of professional experience working in companies across a wide range of industries. He has developed products used by companies like PayPal, American Airlines, and Bank of America, creating success stories for rapidly growing startups. Levon has a solutions-oriented mindset and a proven track record of leading teams in fast-paced, deadline-driven environments.

Front-end Full-stack CSS Express.js MongoDB Node.js Meteor React Amazon S3 (AWS S3)Docker jQuery Less Amazon EC2 CircleCI TypeScript

Portfolio

Alienlab LLC

Technical Hiring, Training, Technical Project Management, MacOS, APIs, Atlas...

HealthStaffEd

Meteor, React, Amazon EC2, CircleCI, MongoDB, Microservices Architecture...

Mindful

Meteor, Node.js, GraphQL, Express.js, React, MongoDB, AWS Fargate, Redis...

Experience

JavaScript - 8 years HTML - 8 years CSS - 8 years Node.js - 7 years MongoDB - 7 years Express.js - 7 years Meteor - 6 years React - 6 years

Availability

Part-time

Preferred Environment

Slack, Meteor, Node.js, React, Express.js, MongoDB

The most amazing...

...thing I've developed is a microservices system that digitized all Abu Dhabi governmental entities, making them just one click away.

Work Experience

Chief Technology Officer

2018 - PRESENT

Alienlab LLC

Hired, trained, and managed technical staff. Created individual learning programs, conducted performance reviews, and built an efficient tech team ready to face significant tech challenges.
Planned the development of the clients' projects by defining timelines, selecting the tech stack, maximizing the architecture's performance, and cost-optimizing solutions, which resulted in many success stories.
Created and managed infrastructure tools used in the company that led to an automated, efficient, and reliable day-to-day workflow.

Technologies: Technical Hiring, Training, Technical Project Management, MacOS, APIs, Atlas, Heroku, CircleCI, Less, Sass, Semantic UI, Front-end Development, React Native, Amazon Web Services (AWS), Full-stack, Serverless Framework, Serverless, Serverless Architecture, Full-stack Development

Lead Software Developer

2020 - 2022

HealthStaffEd

Led development team working on the core platform.
Managed the architectural decisions and shifted to a more scalable infrastructure.
Adapted the application for new clients adopting it accordingly.

Technologies: Meteor, React, Amazon EC2, CircleCI, MongoDB, Microservices Architecture, Socket.IO, Docker, HTML, JavaScript, CSS, Bootstrap, xAPI, Galaxy, Front-end, Atlas, Front-end Development, Full-stack, TypeScript, API Integration, Full-stack Development

Lead Software Developer

2019 - 2020

Mindful

Built a messaging app that allowed call center employees to communicate with customers via SMS.
Restructured a monolithic application into a distributed system, able to extreme loads by complex scaling methods.
Developed a pipeline that captures customer interaction and automates communication by recognizing customer intents and scheduling callbacks accordingly.

Technologies: Meteor, Node.js, GraphQL, Express.js, React, MongoDB, AWS Fargate, Redis, Rancher, Amazon Lex, Amazon S3 (AWS S3), Sass, APIs, Front-end, Atlas, Front-end Development, Amazon Web Services (AWS), Full-stack, API Integration, Lambda Functions, Serverless Framework, Serverless, Serverless Architecture, Full-stack Development

Senior Software Developer

2018 - 2018

DarkMatter LLC

Created specifications for microservices that connected government entities and process data used by 150+ web applications.
Participated in developing a distributed system architecture intended to digitize every governmental entity interaction in Abu Dhabi.
Crafted templates to automate the creation of new and secure microservices.

Technologies: Node.js, ELK (Elastic Stack), Docker, Microservices Architecture, APIs, Full-stack Development

Senior Software Developer

2016 - 2018

Snappr

Built an application to analyze users' professional profile photos that specifies the good and bad sides and suggests tips and a proper professional photoshoot.
Developed an application that also analyzes users' photos but from a dating application perspective.
Created a photographer booking procedure, which suggests the best fit for each customer depending on their location, needs, and other criteria.
Implemented a user interaction collection system to generate stats that help Snappr continuously improve the platform.

Technologies: Express.js, React, HTML, CSS, MongoDB, Front-end, Heroku, Socket.IO, Front-end Development, Full-stack, Full-stack Development

Experience

Mindful Messaging

https://getmindful.com/

Get Mindful is a platform for enterprise businesses to handle extreme loads on their call centers by enabling interaction via SMS by a machine learning (ML) powered solution to request callbacks. Mindful helps hundreds of millions of calls to be addressed annually. It is a distributed system with a very complex architecture that allows it to be highly scalable and performant.

Snappr

https://www.snappr.com/

The largest on-demand photographer network in the world. I worked with Snappr at the startup and Y combinator stages. Snappr also provides professional and dating app photo analyzer tools for which I was responsible.

HealthStaffEd LMS

https://www.healthstaffed.com.au/

A Meteor-based interactive learning and certification platform built for the healthcare environment. HealthStaffEd LMS is the leading learning solution in Australian healthcare. The platform provides the ability to manage employees' learning curve on several layers using online learning modules and schedule F2F meetings scheduling rich insights for admins via many reports and statistics.

LongTailPro

https://longtailpro.com/

A Meteor-based application providing relevant keywords for SEO optimization. The application uses multiple data sources and a complex architecture for collecting and analyzing the data using serverless solutions and an MQ system.

Currencii

A fintech platform providing an automated large-scale currency exchange service for enterprises. A meteor-based application providing KYC functionality and the ability to easily execute large transactions, follow transaction lifecycle, and generate advanced and custom reports.

Data Migration and Warehouse System for Healthtech Product

A complex system for continuous data gathering and transformation of data from several tenants into a data warehouse with data visualization and analytical tools. I worked on designing and implementing infrastructure with complex networking and security aspects.

Skills

Languages

JavaScript, CSS, HTML, Less, TypeScript, GraphQL, Sass

Frameworks

Express.js, Serverless Framework, Bootstrap, React Native, Ant Design

Libraries/APIs

React, Handlebars, Node.js, jQuery, Stripe API, Stripe, Redis Queue, Socket.IO

Tools

CircleCI, Slack, Amazon Elastic Container Service (Amazon ECS), AWS Fargate, AWS Simple Notification Service (SNS), Amazon Lex, ELK (Elastic Stack), Codeship, Google Kubernetes Engine (GKE), Travis CI

Paradigms

Microservices Architecture, Serverless Architecture, Agile, Agile Software Development

Platforms

Meteor, Amazon EC2, Docker, AWS Lambda, Galaxy, Heroku, Amazon Web Services (AWS), MacOS, AWS Elastic Beanstalk, Kubernetes, Rancher, Apache Kafka

Storage

Amazon S3 (AWS S3), MongoDB, Amazon DynamoDB, Redis, MySQL, Google Cloud, Redshift

Other

Semantic UI, Atlas, Front-end, Front-end Development, Full-stack, API Integration, Full-stack Development, Technical Hiring, Training, Technical Project Management, Lambda Functions, Serverless, Medicine, Medtech, Amazon RDS, xAPI, Web Scraping, APIs, Stripe Payments, TypeORM, IT Project Management

Education

2012 - 2014

Master's Degree in General Medicine

Yerevan State Medical University - Yerevan, Armenia

2007 - 2012

Bachelor's Degree in General Medicine

Yerevan State Medical University - Yerevan, Armenia

Certifications

AUGUST 2022 - AUGUST 2025

Certified Associate in Project Management (CAPM)

Project Management Institute (PMI)

MAY 2022 - MAY 2025

AWS Certified Cloud Practitioner

Amazon Web Services