Seeking to join a FinTech team developing automated trading systems for cryptocurrency and traditional financial markets.
Ja Ereshov
@jaereshov
Senior Backend Engineer, 10+ yrs. Built Latenode's core workflow engine & billing infra. Seeking crypto/fintech trading systems roles.
What I'm looking for
Senior Backend Engineer with 10 years of experience designing distributed systems, workflow engines, and high-load backend platforms across AI automation, FinTech, and SaaS. As a founding engineer at Latenode, architected the core workflow engine, execution model, and billing infrastructure from the ground up, building scalable systems that now handle business-critical automation workloads. Brings deep expertise across the backend stack — Go, PHP, CI/CD pipelines, and monitoring systems like Zabbix — along with hands-on experience in complex integration work, including ONIX-based entity merge systems and crypto trading/arbitrage platforms. An early adopter of AI-assisted development workflows, using tools like Claude and ChatGPT to accelerate delivery and raise engineering productivity. Currently looking to bring this experience to a FinTech team building automated trading systems for cryptocurrency and traditional financial markets.
Experience
Work history, roles, and key accomplishments
- Built the platform from the ground up into an AI-powered workflow automation product serving thousands of
users, tens of thousands of active automation scenarios and generating tens of thousands of dollars in
monthly recurring revenue (MRR).
- Co-designed the core architecture of an AI-powered workflow automation platform, including its workflow
execution model, visual workflow builder and secur
- Redesigned processing of large Excel files (100+ MB) for faster throughput while cutting peak memory use
from ~8 GB to ~700 MB per file (over 10× less).
- Designed and implemented a real-time hybrid auction system in Go, combining live bidding with WebSocket-
based buyer–seller negotiations to support complex auction workflows.
- Reduced search response time from several minutes to ~500 ms by re
- Designed and delivered business-critical back-end systems in PHP, including payment processing, delivery
management and synchronization with external systems of record for multiple client products.
- Co-authored the company-wide CI/CD standard adopted across all projects.
- Designed and developed a bookstore system using PHP, covering business logic and integration with
external services.
- Built an entity merge system for the ONIX standard, consolidating duplicate records and improving overall
data quality and consistency.
- Implemented a monitoring system based on Zabbix, configuring metric collection, alerting, and dashboards
to track infrastructure health.
- Se
I create dynamic part of site,
- logging user activity
- mailing notification to customer
Education
Degrees, certifications, and relevant coursework
Omsk State Technical University
Bachelor, Bachelor of Computer Science. Automated systems for information processing and management
2010 - 2014
Omsk State Technical University
Bachelor of Science, Computer Science
2010 - 2014
Bachelor of Computer Science degree from Omsk State Technical University, specializing in automated systems for information processing and management.
Availability
Location
Authorized to work in
Salary expectations
Social media
Job categories
Skills
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