Arseniy Potapov

Senior Software Developer

TrueRoll is a tool that uses data science and artificial intelligence to help governments accurately collect tax data and uncover exemptions. This process benefits local governments, elected officials, and citizens by saving time and money, generating new revenue, and potentially identifying previously unknown tax benefits.

I work on:
· Onboarding customers and data vendors
· Integrations with third party enterprise systems
· DevOps and information security
· Developing new API for the application

Python · AWS · PostgreSQL · GovTech · Web Development

Senior Full-Stack Developer

Market Making as a Service. LQFI provides unified digital asset trading infrastructure, enabling high velocity, efficient, and secure trading. Crypto liquidity provider on centralized and decentalized exchanges.

Being one of the core engineers in the algo-trading team
· I developed algo trading strategies for Binance / Kraken / Huobi / FTX
· Integrated cold wallets with the platform via Web3
· Extended internal framework, added multiple API integrations

React · Rust · EC2 · Blockchain · Solidity · API Integrations · AWS · Node.js · Web3 · MongoDB · Fintech · Typescript · Web Development

Senior Backend Engineer

The World's #1 provider of short-term rental compliance monitoring end enforcement solution for local governments. Host Compliance makes it easy for municipalities to implement and enforce fair and effective short-term rental rules. SAAS for the US government to control short-term rentals, compliance, reports and tax collection. Integrations with third party services, web scraping, data processing, payments, auth, public APIs. Granicus acquired HostCompliance in 2020, I continued my role as a software engineer.

· I developed a platform API for short-term rental platforms to comply with the city of Los Angeles laws. This had a significant effect on cleaning fraudulent/unregistered listings from Airbnb and other platforms in LA.
· Created an API for user file uploads with a focus on security and. FedRAMP guidelines. This feature allowed encryption, very granular access control, and tight security policies to be implemented.
· Developed part of the platform allowing property management companies to renew their rental permits, report and pay taxes in bulk rather than individually.
· Built a basement for GraphQL back end for a new dashboard, which was highly modular and flexible and used a schema-first approach. This allowed the back-end team to extend the features quickly and kept the front-end team less dependent on back-end releases.

Stripe · AWS · Microservices · Jira · Flask · Pandas · GitHub · Access · Data Engineer · AWS Lambda · Data Analysis · Git · Numpy · Web Services · Docker · SQLalchemy · PostgreSQL · Serverless · EC2 · Data Modeling · Security · ElasticSearch · Redis · Crawlers · PostGIS · GraphQL · SQL · Python · Data Engineering · LESS · SaaS

Sr. Tech Consultant

Platform & dashboard for industrial plants to control and optimize their energy consumption. Multi-level access, email & phone notifications, automated report generation, machine learning prediction & segmentation, direct plant-to-cloud data streaming integration. Focus on scalability, availability & cost-efficiency.

· Consulted client regarding algorithms, performance issues, tech stack, and solution architecture. Researched when required. Played a leading role in building a long-term strategy, solution architecture designing, planning sprints, grooming the task backlog, and preparing the tickets.
· Managed project and agile development team. Lots of code reviews done. Mentored and onboarded new developers. Tracked team's KPIs and goals.
· Handled all dev ops work and configured the cloud infrastructure from scratch.

PagerDuty · IoT · AWS · Flask · CI/CD · Pandas · Agile · Cloud · API Integrations · NoSQL · Data Analysis · Git · Numpy · Web Services · Solution Architecture · Data Modeling · GitLab · Machine Learning · Celery · Code Reviews · Node.js · Vue.js · MongoDB · Python · Data Engineering · UI Development

Co-Founder & Sr. Tech Consultant

Managed a team of senior developers working on various projects, such
as energy consumption monitoring technology, money remittance
platform based on crypto, advertisement campaigns auto-optimization,
mobile ads exchange, etc.

· Built an algorithm for the auto-optimization of internet advertising campaigns, which maximizes their performance by finding and blocking traffic sources and platforms that do not convert well enough.
· Architected and implemented ETL for a mobile advertising affiliate network. I used proprietary technologies for predicting the likelihood of conversion based on device data.
· Developed a bot detection feature that redirected bots from website content to other destinations—protecting content from crawling.
· Implemented email marketing automation and CRM integration, using SparkPost API and Zoho CRM.
· Consulted clients in the tech area, architected solutions, and managed an agile dev team. Participated in a lot of planning, communication, brainstorming, and architecting. Tracked team's KPIs and managed the goals.
· Played multiple roles - team lead, lead developer, scrum master, project manager, code reviewer, QA, mentor

AWS · ETL · Microservices · Flask · Pandas · Agile · Project Management · Django · MySQL · Data Engineer · NoSQL · JavaScript · Git · Numpy · Docker · PostgreSQL · Serverless · Data Modeling · Celery · Optimization · Scrum · Redis · Crawlers · Vue.js · MongoDB · Crypto · SQL · Python · QA · Data Engineering · SaaS · Communication

Software Developer

Worked on automating all manual processes. Completely based on
serverless approach, fully controlled via Slack bot.

Integrated with various APIs: Mailgun, Slack, Google Spreadsheets,

AWS & DevOps Consulting Services. I worked on internal projects for automating weekly reports generation: from gathering data from multiple sources and picking up notes from the relevant team members to data analysis & visualization and actual delivery via email & web.

PagerDuty · Serverless · AWS · Data Engineer · Pandas · AWS Lambda · NoSQL · DevOps · Data Analysis · ElasticSearch · Python · DynamoDB · Docker

Senior Developer

Worked as core engineer in personal website construction service, helped it evolve into a remote job platform and professional social network with 2M users online. Besides other tasks I solely worked on
machine learning algorithm for smart job matching.

Integrated branded.me with outsource.com. Joined databases, doubled user base, added job matching and other services. Work time tracker app.

· Developed social networking features (follows, likes, and feeds) to be almost linearly scalable.
· Spotted and successfully coped with several bottlenecks in the back-end API code and infrastructure; made huge speed and robustness improvements.
· Wrote an algorithm to match users together based on contact lists users upload (a social networking feature).
· Performed email service integration, including dealing with bounces, unsubscribes, campaigns, and conversion funnel (marketing-specific experience).
· Integrated the billing, which includes work with user's accounts, transactions, adjustments, and recurrent payment plans (experience with user's money).
· Applied machine learning (NLP, clustering, neural networks, classification) to match users with open job positions based on their profile and job description. Also developed an algorithm to predict the required skills for a job based on its description.

Back-End Development · Qt · AWS · Microservices · Flask · Heroku · Data Engineer · NoSQL · Data Analysis · Git · Web Services · Docker · EC2 · Data Modeling · ElasticSearch · Machine Learning · Celery · C++ · Redis · MongoDB · Python · Data Engineering

Senior Python Developer

Core developer, worked on a high load distributed service serving
millions mobile ads per second.

· I developed a high load distributed service hosted on Amazon AWS (EC2, S3), based on Django, using Python, Redis, MySQL, HP Vertica, Twisted, Celery, gevent and a little bit Lua on top of Nginx for lower level networking.

Fixed a system to scale linearly by profiling and eliminating critical bottlenecks, and dramatically reducing IO usage on each cluster node.
Implemented a global lock feature on top of a Redis DB. Whenever it should be guaranteed that the shortcode section has exclusive access to some portion of data, it just acquires a lock, and other instances won't be able to reach it until release.
Dramatically reduced latency by adding memorization on top of a local process memory and 2-level caching (local and remote Redis).
Integrated with Google Ads, MobFox, and other RTB partners (real-time bidding).
Created a special filtering layer on the level of Nginx. Lua scripts apply all the filtering efficiently by dropping not-useful connections very early, even before it gets to the Python back end.

Lua · AWS · Django · Access · MySQL · NGINX · Git · Web Services · EC2 · Data Modeling · Celery · Node.js · Big Data · Redis · SQL · MongoDB · Python · Data Engineering · Amazon Redshift · SaaS

Senior Python Developer

Business Services, Custom Software & IT Services. I was a developer team lead, developed web portal for cold call tracking & marketers training.
Fully managed development process.

Developed a platform for the salespeople where they could schedule meetings, record their progress, and where they can self-educate to sell better and increase their KPI.
Managed a team of developers, discussed features with the client, planned sprints, and then distributed tasks to developers, did showcases, and gathered feedback. Used Agile methodology.
Developed a data-set preparation layer for a cloud machine learning platform: the data was accepted in different formats, and it has to be unpacked, parsed, shuffled, normalized, split onto parts, and fed into the machine learning workers' queue.
Created a data set management system: a user can upload his data sets, review them, view some statistics, configure how to process them, download and remove them. It then passes it into the machine learning session OFC.

AWS · Jira · Agile · Bootstrap · Cloud · Django · MySQL · Data Engineer · JavaScript · Git · PostgreSQL · EC2 · Statistics · Web Development · Machine Learning · Celery · SQL · Python · SaaS