Віктор

Viktor Marymorych
Software Engineer (Backend & Security Systems)

Software Engineer with over 6 years of hands-on experience
focused on Backend, Systems, and Infrastructure.
Expert-level pro ciency in Go (Gin), Python (FastAPI), and Java
Personal Info
(Spring Boot), specializing in complex, multi-service architectures.
[open contact info](look above in the "contact info" section)
Hands-on Development:
[open contact info](look above in the "contact info" section) Architected high-performance network components and
Ukraine APIs in Go (5+ years).
Developed backends and APIs for AI services using Python
(5+ years).
Links
Engineered reliable enterprise applications with Java &
LinkedIn Spring Boot (5+ years).
Website Utilized Rust (3+ years) for secure, high-performance
network tooling.
1. Core Programming DevOps & Automation: Proven experience in 'infrastructure-as-
Languages code' and CI/CD pipelines (TeamCity, Docker). Developed a
proprietary framework of 15+ utilities (Python/Go/Rust) for
Python & FastAPI automating audit and monitoring.
Unique Advantage: A deep background in cybersecurity (R&D, C++,
Go (Golang) & Gin
DevSecOps) allowing me to engineer systems that are secure-by-
Java & Spring Boot design.

Redis
Work Experience
Docker & Kubernetes
Python Developer, EON PLUS
(K8s) May 2025 - October 2025
Developed and maintained a high-performance, containerized
Databases (PostgreSQL,
microservice architecture using Python and FastAPI for an
MySQL, ClickHouse)
enterprise client.
CI/CD (Jenkins, GitLab Engineered the backend for an AI chat service, implementing an
CI, TeamCity) API-driven consultation chat powered by a vector database.
Developed the document- ow microservice, enabling secure digital
Cloud (GCP,
document processing, signing, and static storage.
DigitalOcean)
Successfully integrated the document service with the "Diia"
IaC (Terraform, Ansible, national e-governance platform to handle digital signatures.
Pulumi) Built the noti cations service by integrating multiple third-party
APIs (Telegram bots, TurboSMS, SMTP2Go) for asynchronous
Git & GitHub Actions
alerts.
Vector Databases Developed and maintained the nance microservice API.
(OpenAI) Managed and wrote OpenAPI (Swagger) documentation,
including both auto-generated (FastAPI) and custom
Rust
(openapi.yaml with $ref) speci cations.
C++ Deployed and managed all microservices within a Docker
environment.
Unreal Engine 5
Senior Software Engineer (Security Automation), Multiple US-based
Angular & TypeScript Clients (under NDA)
 WebSocket API January 2025 - October 2025
Architected, developed, and maintained a proprietary automation
OpenAPI (Swagger)
framework of 15+ utilities using Go, Python, and Rust.
Applied Security & The framework automates 99.9% of security audit, forensic
DevSecOps analysis, and defensive hardening tasks, replacing thousands of
hours of manual work.
Engineering Leadership &
Engineered the framework to conduct automated infrastructure
Mentoring
testing, microservice threat modeling, and live incident mitigation
Strategic Thinking & for six US-based organizations.
System Design Integrated Python-based AI modules to auto-generate
vulnerability reports and actionable mitigation plans.
Network Security & Acted as the nal point of escalation, deploying and supervising
Cryptography the framework's response to active breaches.

Penetration Testing & Full Stack Security Engineer, Stealth Startup (under NDA)
Red Teaming December 2024 - June 2025
Architected and developed the complete backend for a real-time
Assembler & Reverse
network monitoring platform.
Engineering
Built a multi-service Zero Trust backend using a polyglot
Security Operations & architecture:
Incident Response Go (Gin) for high-performance WebSocket channels and
data ingestion.
Malware Design & Python (FastAPI) for AI-driven analytics modules.
Evasion Java (Spring Boot) for high-reliability enterprise services.
Solana Smart Contract Developed secure, containerized agents (Go/Rust) to run in
Security Docker, sending isolated telemetry (CPU, RAM, ports) over
hardened protocols.
Swift & Xcode Engineered encrypted data ows, multi-level user isolation, and

Tokenomics role-based access control (RBAC) from the backend to the
frontend.
Languages Enterprise Defense Architect, Bank Infrastructure (under NDA)
October 2024 - June 2025
English
Led the engineering effort to secure a large-scale core banking
Ukrainian system with 100+ microservices and legacy components.
Personally developed and deployed new secure microservices
Russian (Go/Java) and hardened existing legacy code.
Built and managed CI/CD pipelines in TeamCity for automated
container security scanning (using custom Rust scanners) and
deployment.
Engineered technical solutions to meet PCI DSS, ISO 27001, and
NBU compliance requirements.
Re-architected and optimized SIEM pipelines for high-performance
logging and enhanced forensic traceability.

Blockchain Security Tools Developer (R&D), Web3 Security Group (under
NDA)
September 2024 - November 2024
Tasked with performing manual security audits for 24+ Solana-
based projects, from smart contracts to backend services.
 Identi ed major ine ciencies in the manual audit process and
began R&D on an automation solution.
Initiated the development of a proprietary audit framework (using
Python, Go, and Rust) to automate vulnerability discovery.
Developed and tested the rst versions of this framework, which
proved capable of nding reentrancy, privilege escalation, and
injection vulnerabilities.
This R&D project laid the foundation for a toolset that would later
automate over 90% of manual audit tasks.

Gameplay Engineer (AAA Horror Title), Stealth Studio (under NDA)
June 2024 - August 2024
Contributed to an o cial expansion for a globally known AAA
asymmetrical horror title.
Scripted in-game logic, quest events, and character interactions
using Unreal Engine 5 (C++ and Blueprints).
Participated in internal C++ code reviews and collaborated with
international teams under NDA.

Mobile App Developer (iOS), Stealth Startup (under NDA)
January 2024 - May 2024
Engineered the mobile data storage layer for a rapid-delivery iOS
application.
Focused on application architecture design and memory use
optimization.
Integrated external UI and logic modules from teammates into a
cohesive application structure.
Collaborated directly with the product lead to ensure module
compliance and delivery ow.

Lead Backend Engineer (Infrastructure), Major Digital Bank (under NDA)
March 2023 - September 2023
Led the backend development of a secure, large-scale digital
banking platform.
Personally architected, developed, and containerized
microservices (using Go/Java) for core banking functions, fraud
detection, and AML compliance.
Engineered and delivered a full infrastructure-as-code (IaC)
solution with automated audit trails and observability.
Built and integrated a multi-layered Zero Trust infrastructure,
managing 70+ integrated components (EDR, SIEM, PAM, IAM,
HSM, etc.).
Designed secure communication layers and integrated real-time
security orchestration (SOAR) and user behavior analytics
(UEBA).

Red Team Lead & Offensive Security Engineer, FortiNet
January 2023 - January 2024
Promoted from Junior Analyst to Team Lead in 3 months, leading
a 7-person engineering team.
 Led the R&D and development of advanced, low-level security
analysis tools.
Designed and developed custom C++ socket payloads for system
stress-testing and advanced network protocol simulation.
Wrote and maintained a core toolkit of Python-based network
probes for automated infrastructure analysis.
Performed low-level system analysis using assembly and
disassemblers to inform secure software design.

Full Stack Developer, PerfectLine
October 2021 - December 2022
Joined as a junior and quickly gained responsibility over core
backend and frontend modules.
Developed, and maintained modular backend systems using Java
(Spring Boot) and Python (FastAPI/Flask).
Built and containerized scalable applications using Docker,
managing secure deployment pipelines.
Developed responsive web interfaces with Angular and
TypeScript.
Engineered secure Docker architectures and authored internal
documentation on secure coding practices.

Software Developer (Trainee / Junior), Stealth Company (under strict
NDA)
November 2019 - September 2021
Gained foundational commercial experience in backend
development, focusing on software engineering fundamentals
and learning core technologies.
Worked extensively with Python and Java in a professional R&D
environment.

Education

Software engineering, Odessa Polytechnic University
September 2021 - June 2025