Looking for a job

Sergey Baldin

@sergeybaldin

Message

Senior Python and Go backend engineer focused on AI-driven automation.

Spain

Message

What I'm looking for

I seek backend or platform roles where I can design scalable systems, apply AI/LLM automation, mentor teams, and improve developer productivity in an agile environment.

I am a senior backend engineer with 10+ years of software development experience, specializing in Python and Go and skilled across full-stack web development, databases, and distributed systems. I have led redesigns and refactors for scalable chatbot and CPaaS platforms, integrated multiple AI/LLM engines, and introduced AI-powered automation to improve runtime decisioning and developer productivity.

I have a proven track record across fintech, gaming, crypto, and enterprise systems, working with technologies such as FastAPI, Django, Kafka, PostgreSQL, Redis, Docker, and Kubernetes. I mentor engineers, participate in architecture and hiring, and apply AI tools to testing, code generation, and production workflows while maintaining and stabilizing legacy services.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

Unifonic

Mar 2023 - Present (2 years 11 months)

Led refactor of the chatbot builder backend and integrated multiple AI/LLM engines to enable intelligent intent handling and AI-driven automation, improving modularity, scalability, and developer productivity across the CPaaS platform.

Python fastAPI Java MySQL RabbitMQ Kafka OpenSearch Redis Docker

Web Developer

Coins.ph

Sep 2021 - Jan 2023 (1 year 4 months)

Designed and implemented an anti-fraud system and backend services using Go and EmberJS, leveraging PostgreSQL, Kafka, Docker, Kubernetes and AWS to secure payments and scale transaction processing.

Go PostgreSQL Kafka Docker Kubernetes AWS Backend Development

Web Developer

Wargaming

Mar 2019 - Aug 2021 (2 years 5 months)

Developed and supported web services and tools for World of Warships, improving player-facing portals, referral systems, and publisher tools while integrating with Steam, Epic, Amazon and Google.

Python Django AIOHTTP Redis Kafka RabbitMQ PostgreSQL

Web Developer

50x.com

Oct 2017 - Feb 2019 (1 year 4 months)

Built real-time market and WebSocket services, aggregated public exchange data into MongoDB, and implemented REST APIs and trading libraries to support a cryptocurrency exchange platform.

Python AIOHTTP WebSockets MongoDB Real Time Systems API Development

Web Developer

AgoraDoxa

May 2017 - Sep 2017 (4 months)

Contributed to backend and frontend development of marketplace products using Django REST Framework, implementing RESTful services and participating in technology research and product testing.

Python Django DRF ReactJS Redux AWS ELK

Python and PostgreSQL Developer

Tensor

Jun 2016 - Apr 2017 (10 months)

Analyzed, developed, tested, and documented warehouse management solutions using Python and PostgreSQL to support enterprise logistics operations.

Python PostgreSQL Backend Development Testing Documentation

Web Developer

BARS-Group

Jan 2014 - Mar 2016 (2 years 2 months)

Developed and supported enterprise educational solutions, built extensive reporting, UI components on M3 (Django/ExtJS) and integrated with external systems via SOAP/REST/SAML.

Django SOAP REST SAML Reporting Enterprise Software

Software Engineer

VDOM Box Research

May 2011 - Jun 2013 (2 years 1 month)

Developed web server components, administration tools, WebDAV support, and SOAP APIs for VDOM-based solutions, and implemented dynamic Python/jQuery widgets for web integration.

Python WebDAV SOAP Server Development