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Antoan Rusinov

@antoanrusinov

Senior Java backend engineer specializing in high-performance distributed systems and blockchain security.

Bulgaria
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What I'm looking for

I seek hands-on roles building scalable, secure backend systems in cloud-native teams that value engineering excellence, observability, and impactful product delivery.

I am a Senior Java consultant and backend engineer with extensive experience designing, building and optimizing high-throughput, low-latency distributed systems for finance, sports data and enterprise clients. I have led architecture and implementation efforts across microservices, cloud-native deployments (AWS, Kubernetes, Docker), messaging platforms (Kafka, RabbitMQ, ActiveMQ) and caching/distributed data solutions, delivering resilient, scalable platforms and measurable performance improvements.

I also bring blockchain and smart-contract expertise—security audits, Solidity, EVM toolchains and L1/L2 patterns—combined with a strong DevOps and observability background (Terraform, GitHub Actions, Prometheus, ELK). I thrive in hands-on teams where pragmatic engineering, operational excellence and continuous improvement drive business outcomes.

Experience

Work history, roles, and key accomplishments

CMC Markets logoCM
Current

Senior Java Consultant

CMC Markets

Jan 2025 - Present (9 months)

Built a real-time financial data processing system that collects, processes, and distributes trading data, implemented distributed caching, scheduled batch synchronization, message replay for error recovery, and RESTful APIs for external integrations.

Financial Times logoFT

Senior Go/Java Consultant

Financial Times

Jun 2023 - Dec 2024 (1 year 6 months)

Developed and supported 250+ microservices using Go and Java, performed performance optimizations and security work, and collaborated with stakeholders to resolve complex system issues across AWS and Kubernetes environments.

Sportradar logoSP

Senior Java Consultant

Nov 2021 - Jun 2023 (1 year 7 months)

Contributed to platform architecture and implemented new functionalities for high-throughput sports data systems, focusing on performance, caching, and infrastructure pipelines across AWS and containerized environments.

Euroclear Bank logoEB

Senior Java Consultant

Euroclear Bank

Apr 2021 - Oct 2021 (6 months)

Delivered consulting services to implement new functionalities and resolve customer issues; established DevOps pipelines to enable reliable data flow between bank segments within a Scrum team.

UB

Senior Software Consultant

Nov 2017 - Aug 2018 (9 months)

Served as backend Java consultant resolving performance issues processing 65M+ records/day, led platform migrations, and implemented features for the internal liquidity platform using Apache Ignite and other technologies.

Scale Focus logoSF

Java Technical Lead

Scale Focus

Jan 2017 - Oct 2017 (9 months)

Led architecture and performance improvements for mailing and shared services for Shutterfly clients, focusing on scalability, resilience, and high-frequency request handling across monolith and microservice architectures.

SoftServe logoSO

Senior Java Developer

SoftServe

Mar 2016 - Dec 2016 (9 months)

Implemented client-specified features, participated in architectural decisions, and mentored three interns while maintaining daily client communication and delivery.

Emerging Markets Consulting logoEC

Senior Java Consultant

Emerging Markets Consulting

Apr 2015 - Jun 2015 (2 months)

Led a three-member team to implement client features across trading and risk management solutions, delivering tailored middleware and BI integration for commodity and finance clients.

FR

Java Developer (Freelance)

Freelance

Sep 2012 - Feb 2013 (5 months)

Developed integrations and reporting solutions for international banks, focusing on data integration and reporting accuracy for financial systems.

Education

Degrees, certifications, and relevant coursework

Sofia University St. Kliment Ohridski logoSO

Sofia University St. Kliment Ohridski

Bachelor's Degree, Pedagogy

Bachelor's Degree in Pedagogy obtained from Sofia University St. Kliment Ohridski.

SB

Software University Bulgaria

Certificate, Linux System Administration

Completed coursework in Linux System Administration at Software University Bulgaria.

Telerik Academy logoTA

Telerik Academy

Certificate, Databases

Completed a Databases course covering SQL, MySQL, transactions, Redis and MongoDB.

PL

Pragmatic LLC

Certificate, Java Development

Completed an advanced Java developer course covering Java SE and J2EE topics.

MongoDB University logoMU

MongoDB University

Certificate, MongoDB for Java Developers

Completed the 'MongoDB for Java Developers' course.

MO

MIT OpenCourseWare

Coursework, Computer Systems Security

Completed coursework from MIT OpenCourseWare on Computer Systems Security (6.858).

Oracle logoOR

Oracle

OCA (Oracle Certified Associate), Java SE 8

Achieved OCA (Oracle Certified Associate) Java SE 8 Programmer I certification.

AD

Adobe

Training, ColdFusion

Completed Adobe ColdFusion training.

UT

UBS (internal training)

Internal Certifications, Compliance & Security

Completed multiple UBS internal certifications including GDPR, Cyber Security, and Anti-Money Laundering modules.

ET

EPAM (internal training)

Internal Certifications, IT Security & Quality

Completed EPAM internal courses such as Data Privacy Awareness, IT Security Awareness, and Quality Management Systems.

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Antoan Rusinov - Senior Java Consultant - CMC Markets | Himalayas