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MARKEL KALUHIN  SENIOR SOFTWARE ENGINEEREMAIL AVAILABLE PHONE NUMBER AVAILABLERochester Hills, MI, USA, 48309 LINKEDIN LINK AVAILABLE Click to schedule the meeting github.com/Markel-Kaluhin WORK EXPERIENCEFreightVerify 11/2023  05/2024Senior Software Engineer 7 months Initiated the development of a new service for public access system information, and used the best cybersecurity practices Reworked the bulk operations service, significantly boosting its throughput by 1500 times Introduced strict typing and structured all API calls, reducing the number of bugs related to data inconsistency by 76% Spearheaded the development of an atomic design system, increasing the uniformity of appearance of UI elements Led the transition from JavaScript to TypeScript for the UI, resulting in a 60% reduction in errors attributed to typeless Technical stack: Python  TypeScript  JavaScript  React  Terraform  PostgreSQL  GitLab  Jenkins  AWS Upside 09/2022  09/2023Senior Software Engineer 1 year Reworked graphic recognition, resulting in a 30% faster pipeline for process data and reducing recognition errors by over 60% Enhanced AWS Lambda function performance, reducing errors by 20% and response time by 15% Reworked AWS infrastructure using Terraform, cutting deployment time by 25% and boosting scalability Served as a first-level duty officer for PagerDuty, ensuring a minimum system downtime of less than 1% and providing efficient solutions to common problems, reducing resolution time by 40% Technical stack: Python  TypeScript  FastAPI  Angular  Terraform  Snowflake  DynamoDB  GHA  Jenkins  AWS AutoDS 08/2020  05/2022Tech Lead 1 year 8 months Reimagined QA processes to reduce average bugs in the tracker from 60 to 15 per month, improving bugfix efficiency by 75% Initiated backlog management, and planning processes, reducing feature delivery time by 30% Built CI/CD pipelines from scratch, increasing delivery speed by 5x and reducing time-to-market by 20% Managed and mentored 5 developers, hired 15 candidates, conducted 80+ technical interviews Technical stack: Python  FastAPI  Terraform  Docker  MongoDB  MySQL  Celery  AWS  Jenkins  Pandas  Beanie CybeReady 10/2019  04/2020Tech Lead 5 months Restructured key product features, reducing database calls by 76% and improving performance by 3x (from 48 to 16 hours), enabling faster order processing and service strategy revisions Reached cost savings of over 40% in cloud computing power maintenance Mentored a team of 4 developers, managed backlog, and collaborated with stakeholders to drive development decisions Technical stack: Python  TypeScript  Serverless  Angular  Django  Celery  MySQL  AWS  Docker  Jenkins Onseo 04/2017  09/2019Tech Lead 2 years 6 months Designed a scalable infrastructure, attaining a throughput of 1500 messages/sec on a single instance using WebSocket Supervised a team of 12, including 7 developers, interviewed 5 of them Administered the launching of a new product to manage logistics for a fleet of 150 vehicles and over 350 repair crews Orchestrated collaboration with customer departments, streamlining requirements gathering, speeding up product development cycles, and initiating user testing and feedback processes Technical stack: Python  TypeScript  Tornado  Angular  React  AWS  Docker  Kubernetes  PostgreSQL Tech Lead Optimized and maintained the legacy backend; increased server response rate from 150 to 550 responses per second on a single instance Implemented a Microservices add-on for the call center, supporting high-load service for 3500 call center operators Technical stack: Python  TypeScript  Tornado  Angular  Docker  Oracle DBMS  Docker Swarm  Traccar  OSM  OSRM SoftServe 08/2015  02/2017Tech Lead 1 year 6 months Drove the discovery phase, establishing requirements, devising an architecture for 4 domains each of which included 15-20 high-scaled services to align with project objectives, and designing a robust data model and infrastructure Produced a scalable data storage system for 80PB (Peta Bytes) of data, achieving a throughput of 15TB per hour Technical stack: Python  TypeScript  Tornado  Angular  Docker  Elasticsearch  PostgreSQL  Jenkins Software Engineer Created a critical feature, enabling custom infrastructure import into a clustered VM environment, contributing to 40% of the product's value Implemented an approach to collaboration with clients and architects led to a 20% reduction in implementation time and facilitated the launch of new product features Launched a product generating an annual gross profit of approximately $5M, as per public tax records Technical stack: Python  Flask  Docker  Kubernetes  Jenkins  GitLab Software Engineer Headed end-to-end development using agile methodologies, resulting in a 30% increase in dev cycle capacity and a 15% increase in planning accuracy Delivered crucial project features speeded virtual machine creation that reduced deployment time by 35% and improved user interface responsiveness by 20% Initiated and completed a project single-handedly, improving the maintainability of the code base and reducing the number of post-release defects by 40% within the regulated project stabilization time Technical stack: Python  JavaScript  Pyramid  AngularJS  VMWare  QEMU  Vagrant  pyCLI Worldwide Manufacturing, E.D. 12/2013  07/2015Software Engineer 1 year 7 months Engineered and coded a BI system using OLAP cubes for precise volume planning of raw material purchases, production, and sales, achieving a monthly planning accuracy of 99.7% Integrated the existing WMS with shipping companies, resulting in a 34% reduction in storekeepers' time spent on picking supplies and a 15.4% decrease in supply losses during delivery Technical stack: Python  SAIKU  Pehtaho  Microsoft SQL Server  PostgreSQL Metinvest Holding 09/2011  08/2013Software Engineer 1 year 11 months Automated the data collection and report compilation process, reducing the time required by hundreds of times Obtained 100% accuracy in financial and technical reports by eliminating the human factor Technical stack: Python  SAP  Pandas  NumPy  LXML  Excel  SQLite TECHNOLOGIES Software Development: Back-End, Front-End, Full-Stack, Single Page Applications, DevOps, CI/CD, AWS. Languages: Python, TypeScript, JavaScript, PL/pgSQL, PL/Python, PL/SQL, T-SQL. Backend: FastAPI, Tornado, Flask, Django, CherryPy, Pyramid, Serverless, SAM. Frontend: Angular, React, HTML, CSS, Stylus, SCSS, TailwindCSS. Version control systems: GitLab, GitHub, BitBucket, CVS. Databases: PostgreSQL, MySQL, Oracle, SQLite, Microsoft SQL Server, MongoDB, Elasticsearch, AWS DynamoDB. Messages/Streams: RabbitMQ, Redis, Kafka, NATS. Infrastructure: Docker, Kubernetes, Docker Swarm, Nginx, Apache HTTP Server. Architecture designs: Microservice, Layered, Monolityc, Event-based, Domain-Driven, Serverless. Paradigms: OOP, Functional, Reactive, Declarative, Parallel and Distributed. Managerial: Agile, Scrum, Kanban, Waterfall, Delivery management, Leading, Mentoring, Hiring, Scope control. EDUCATIONDonetsk National University Graduated in 07/2012Masters degreeMariupol State Humanitarian University Graduated in 07/2008 Bachelor's degree