Saurabh Lodha, Developer in Berlin, Germany
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Saurabh Lodha

Verified Expert  in Engineering

Bio

Saurabh is a full-stack developer with the proven ability to develop RESTful web services and scalable web applications. He has experience leading teams and handling multiple projects at a time. Saurabh loves to travel and would be a great addition to any multinational team.

Portfolio

Beyond Finance
Ruby on Rails (RoR), PostgreSQL, Amazon Web Services (AWS), JavaScript...
Gartner Capterra
Ruby, Ruby on Rails (RoR), React, Elasticsearch, Oracle, MongoDB...
TaskRabbit
MySQL, Elasticsearch, Docker, React, Ruby, Large Language Models (LLMs), Python...

Experience

  • Ruby - 8 years
  • Python - 6 years
  • Web Services - 6 years
  • PostgreSQL - 5 years
  • Test-driven Development (TDD) - 5 years
  • NumPy - 2 years
  • Artificial Intelligence (AI) - 1 year
  • Large Language Models (LLMs) - 1 year

Availability

Part-time

Preferred Environment

Spotify, Terminal, Git, OS X

The most amazing...

...thing I've built is a recommendation engine for apartments with integrated FB data and neighborhood scores, like demographics, pet-friendliness, and schools.

Work Experience

Senior Back-end Developer

2022 - 2024
Beyond Finance
  • Developed and maintained services for data synchronization between client's data and third-party services, handling hundreds of thousands of records daily.
  • Worked as one of the initial developers on the team, helping design the architecture of the Rails project we were migrating the business into. Wrote libraries to communicate with third-party services and the Salesforce database.
  • Collaborated actively through activities like pair programming, code reviews, bug fixes, and idea brainstorming.
Technologies: Ruby on Rails (RoR), PostgreSQL, Amazon Web Services (AWS), JavaScript, Salesforce, Heroku, Large Language Models (LLMs), New Relic, Python, Generative Artificial Intelligence (GenAI), Django, Relational Databases, Architecture, Full-stack, Back-end, Software Design, Artificial Intelligence (AI)

Senior Full-stack Developer

2020 - 2021
Gartner Capterra
  • Worked with the vendor portal team to build new features on the admin portal used by businesses to edit their products, bidding, and other details.
  • Helped migrate the portal's monolith architecture into microservices and wrote tests for the main application with 100% code coverage from scratch.
  • Integrated Okta as an SSO from scratch for the Capterra vendor portal and updated the authorization logic while assigning different access levels to the user. (Capterra is a world-leading software reviews and listing platform—like Yelp for software—and provides reviews, ratings, and the most comprehensive list of top business software products available.).
  • Helped to improve the portal UI built in React.
Technologies: Ruby, Ruby on Rails (RoR), React, Elasticsearch, Oracle, MongoDB, Large Language Models (LLMs), Python, Relational Databases, Architecture, Full-stack, Back-end, Software Design, TypeScript

Senior Full-stack Engineer

2019 - 2020
TaskRabbit
  • Contributed to the scripts that crawl data from IKEA and process and populate the client's database.
  • Improved the recommendation and predictor logic for Tasker based on Elasticsearch.
  • Updated the APIs used by IKEA to improve the logic for price estimates and assembly times.
Technologies: MySQL, Elasticsearch, Docker, React, Ruby, Large Language Models (LLMs), Python, Relational Databases, Architecture, Full-stack, Back-end, Software Design, TypeScript

Full-stack Developer

2018 - 2020
Life.Church
  • Implemented JavaScript to stream podcasts from YouTube and the Bitmovin player.
  • Created complex HTML/CSS and Haml pages from Figma files with pixel-perfect designs, creating over 15 million views in one year within my time on the project.
  • Refactored the existing web services with new requirements.
  • Fixed bugs in the REST web services and extended and maintained the front-end code in the web app.
  • Designed and implemented data structures using YAM files and implemented models with methods to access the data structure. Created complex Ul, incorporating said data. The page has been viewed over 3 million times in its four months of deployment.
Technologies: Ruby, Ruby on Rails (RoR), PostgreSQL, User Interface (UI), User Experience (UX), Large Language Models (LLMs), Python, Relational Databases, Architecture, Full-stack, Software Design

Ruby on Rails Developer

2017 - 2019
Sterling Capital Brokers, Ltd. (via Toptal Projects)
  • Worked in a team that grew from 4 to 13 developers to build a platform for an insurance broker capable of managing clients, enrolling employees, invoicing, generating reports, choosing benefits, and more.
  • Created and enhanced many views from different flows and used Bootstrap to make them mobile-responsive. Collaborated with the designer to create a pixel-perfect UI using InVision designs.
  • Created a script to translate English locales to French using Google Translate APIs. The task is flexible and can be translated into other languages when passed with optional parameters.
  • Brainstormed business logic and system architecture with the team, discussed design principles and best practices, fixed bugs, and helped with code reviews.
Technologies: User Interface (UI), User Experience (UX), PostgreSQL, Ruby on Rails (RoR), Large Language Models (LLMs), Relational Databases, Architecture, Full-stack, Software Design

Full-stack Developer

2017 - 2017
Growbase (via Toptal)
  • Created UI for the app after understanding the product and built the MVP in a month. The client did not provide sketch files and used inputs from the client to decide on the layout, theme, and colors.
  • Implemented role-based authorization for user and admin roles using cancan rules.
  • Designed and implemented database schema to meet requirements and flexible for future changes. Brainstormed business logic with the project owner and helped with ideas.
Technologies: Heroku, PostgreSQL, Ruby on Rails (RoR), Relational Databases, Architecture, Full-stack, Software Design

Back-end Developer (Ruby)

2017 - 2017
Armangil Software (via Toptal)
  • Delivered a production quality and commercializable product in a mere two weeks. The product has a slot booking feature for shared resources among groups of users.
  • Brainstormed ideas for improvements; responsible for database design and created API specs.
  • Created a script which schedules the slots among the users for any given period of time.
  • Integrated Google Calendar to sync with the user's schedule in the product.
  • Implemented role-based authorization for the API with different levels of access to the endpoints.
  • Deployed the build on Heroku.
Technologies: Apiary API, Google Calendar API, Blueprint, JSON Web Tokens (JWT), OmniAuth, PostgreSQL, Relational Databases, Full-stack, Software Design

Full-stack Developer

2016 - 2017
Zenger Labs (via Toptal)
  • Created UI/UX for the platform from the wireframes. The app is heavily data-driven. There are many categories of surveys and reports generated with varying logic using the survey data.
  • Designed a robust and scalable database after understanding the product.
  • Created algorithms to generate various categories of reports which can be distributed through the platform or via emails.
  • Wrote scripts to generate daily and bi-monthly surveys and reports.
  • Deployed the staging and production instances.
Technologies: Amazon Web Services (AWS), Heroku, User Interface (UI), User Experience (UX), PostgreSQL, Ruby on Rails (RoR), Ruby, Relational Databases, Architecture, Full-stack, Software Design

Full-stack/Lead Developer

2016 - 2017
Takor (via Toptal)
  • Designed the UI for the app with dashboards, chat boxes, profile pages, etc.
  • Implemented a private chat using action cable with email notifications. The chat was live with new window pop-ups for individual private chats.
  • Created a customized dashboard for different roles.
  • Designed the database schema to provide maximum flexibility.
Technologies: User Interface (UI), User Experience (UX), PostgreSQL, Relational Databases, Full-stack, Software Design

Full-stack/Lead Developer

2016 - 2016
VNA Group (via Toptal)
  • Created the initial proof-of-concept build and helped the client brainstorm ideas for improvements.
  • Used Twilio to build business logic, which required us to make automated calls and send messages.
  • Used different databases, like PostgreSQL, MongoDB, and Firebase to provide the fastest and most efficient data to the front end.
  • Deployed the staging and production builds on Heroku and Amazon EC2.
Technologies: Heroku, PostgreSQL, Twilio, Ruby on Rails (RoR), Ruby, Relational Databases, Software Design

Technical Engineer and Full-stack Developer

2016 - 2016
Leveling the Field, Inc. (via Toptal)
  • Implemented a script to populate a database from a CSV file and scraped data from an online data source to fill in missing data and ensure data integrity.
  • Redesigned the style sheets using media queries to make the website responsive.
  • Deployed production built on AWS Elastic Beanstalk and migrated the data for use in the production instance.
Technologies: Heroku, AWS Elastic Beanstalk, MongoDB, PostgreSQL, Ruby on Rails (RoR), Ruby, Relational Databases

Senior Software Engineer

2014 - 2015
Twinprimelabs
  • Set up internal portals and the company website, version control server (GitLab and SVN), and task management server (Redmine) and helped with other operational tasks.
  • Worked on more than half a dozen web applications and web services. I built some from scratch and worked on others for feature development. Projects included: Rentaloost, Grayroost, Gymflash, AddressIO, Testprecision, Easybookings, Houserie, and Cut2IT.
  • Conducted interviews and helped with hiring the first 15 employees.
Technologies: NGINX, Redis, MySQL, PostgreSQL, MongoDB, Node.js, Java, Ruby on Rails (RoR), Ruby, Large Language Models (LLMs)

Programmer Analyst

2011 - 2013
Cognizant Technology Solutions
  • Worked for a major bank based in the United States through Cognizant, a multinational service-based company.
  • Handled a client project, which sanitized and processed source raw data to serve as the true data for all others.
  • Created an internal web portal that served as a platform for employee forums, administrative task management, and blogging.
Technologies: Bash Script, Java

Experience

Rentalroost

Built a recommendation engine for finding apartments, using Facebook likes and data, and calculating various neighborhood scores like pedestrian friendliness, pet friendliness, school ratings, demographic snapshots, shopping scores, arts and culture scores, etc. Source data is employed to make it easy for the user to choose an apartment. I have also worked on a feature where landlords can fetch the probable tenant's credit reports and criminal history (if any) to ease the process of verifying the tenants' dossier and making an informed decision (http://bit.ly/1PggefC).

Grayroost

Grayroost serves as a platform for apartment listing from various MLS boards in CA. I worked on extending the website to Massachusetts. Also, I built the logic that helps estimate the price of a property based on neighborhood market analysis and apartment input.

Addresses.io

Addresses.io is a B2B product for performance marketing and web analytics businesses. It provides clients with a service for verifying addresses, auto-suggesting addresses, and fetching geolocation. It also serves the client with various financial scores extracted from IP addresses, which helps them in targeting their user with increased efficiency. I built the product from scratch using Node.js for the back-end and Spring 2.0 for consuming the web service.

GymFlash

Gymflash is a community of fitness studios, instructors, personal trainers, wellness counselors, and fitness hobbyists. It provides a platform for users to connect with trainers, join gyms, and book classes/events related to fitness. Gyms and instructors can join as partners and showcase their events. I built the platform from scratch using Ruby on Rails.

TestPrecision

TestPrecision is an adaptive learning tool which helps students score better in their SATs and ACTs using predictive analytics. The app can dynamically predict the student's expected performance on tests as well as point out deficiencies in the student's academic training. The app provides many sets of tests using which it can predict the scores and provide suggestions. I have worked on the back-end and used Spring 2.0 for the web service.

Event Mate

Built a chatbot that helps users discover and book events based on their interests and location. The system interacts with users to gather preferences, logs into Meetup.com using their credentials, and fetches relevant events. It then analyzes the events using AI models and presents the best options. Users can book events directly through the chatbot or start a new search.

The project leverages LangChain and LangGraph for workflow automation, Gemini as the AI model, and Streamlit for the UI.

Education

2007 - 2011

Bachelor's Degree in Computer Engineering

Vishwakarma Institute of Technology - Pune, India

Skills

Libraries/APIs

React, jQuery, X (formerly Twitter) API, OmniAuth, Stripe API, Sidekiq, Node.js, Stripe Connect, NumPy, Google Calendar API, Apiary API

Tools

Subversion (SVN), Git, NGINX, RSpec, AWS ELB, Chef, SemaphoreCI, Terminal, Apache Solr

Languages

Ruby, HTML, Python, JavaScript, TypeScript, Bash Script, Java, C, C++

Frameworks

Ruby on Rails (RoR), Django, minitest, JSON Web Tokens (JWT), Blueprint, LangGraph, Streamlit

Paradigms

REST, Database Design, Responsive Web Design (RWD), Test-driven Development (TDD), Agile Software Development, Object-oriented Programming (OOP)

Platforms

Heroku, Amazon EC2, AWS Elastic Beanstalk, Apache Kafka, Docker, OS X, Twilio, Amazon Web Services (AWS), Linode, Oracle, Salesforce, New Relic

Storage

MySQL, JSON, PostgreSQL, Relational Databases, Redis, MongoDB, Media Queries, Elasticsearch, Memcached

Other

Machine Learning, Web Services, User Interface (UI), User Experience (UX), Artificial Intelligence (AI), Architecture, Full-stack, Back-end, Software Design, APIs, Generative Artificial Intelligence (GenAI), Spotify, Web Crawlers, Large Language Models (LLMs), LangChain

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