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Ja Ereshov

@jaereshov

Senior Backend Engineer, 10+ yrs. Built Latenode's core workflow engine & billing infra. Seeking crypto/fintech trading systems roles.

Kazakhstan
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What I'm looking for

Seeking to join a FinTech team developing automated trading systems for cryptocurrency and traditional financial markets.

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

Latenode.com logoLA
Current

Senior Backend Engineer

Feb 2022 - Present (4 years 6 months)

- 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

Debexpert logoDE
Current

Backend Engineer

Aug 2020 - Present (6 years)

- 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

ZeBrains logoZE

Backend Engineer

Apr 2019 - May 2020 (1 year 1 month)

- 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.

Books International Inc. logoBI

Fullstack Engineer

Mar 2016 - Apr 2019 (3 years 1 month)

- 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

R Group logoRG

Back-end developer

Oct 2018 - Nov 2018 (1 month)

I create dynamic part of site,
- logging user activity
- mailing notification to customer

Education

Degrees, certifications, and relevant coursework

OU

Omsk State Technical University

Bachelor, Bachelor of Computer Science. Automated systems for information processing and management

2010 - 2014

Omsk State Technical University logoOU

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.

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