Andrii Veteran

AN D RII M O ISEIENKO
P Y T H O N B ACKEN D D E V EL O PER
[open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section) Cherkasy, Ukraine [open contact info](look above in the "contact info" section) github.com/Moses-93
Software Engineer using Clean Architecture & DDD to build backend solutions and Enterprise automation processes.

Track record includes independently architecting a full-cycle SaaS booking platform with optimistic concurrency control, alongside

building complex financial allocation modules for ERP systems. I leverage FastAPI, PostgreSQL, and Redis to solve high-concurrency
challenges, ensure strict data integrity, and implement event-driven communication.

SKILLS Programming Languages: Python
Frameworks & Libraries: FastAPI, SQLAlchemy, Celery, Dishka, Pydantic, OpenAI SDK, Fastembed,
Pandas, Aiogram, Pytest, Alembic
Architecture & Principles: Clean Architecture, Domain-Driven Design (DDD), Event-Driven Patterns,
SOLID, GRASP, REST, RAG
Databases & Message Brokers: PostgreSQL, Redis, MongoDB
Tools & DevOps: Docker, CI/CD (GitHub Actions), Nginx, Sentry

EXPERIENCE
Aug 2025 – Mar 2026 Python Developer (full-time)
Neurotrack, remote
Project: Financial Planning & Analysis (FP&A) Module.
Modeled the backend domain using Clean Architecture and DDD to encapsulate complex financial
budgeting rules.

Built a calculation engine that aggregates multi-variable pricing matrices and multi-currency data,
reducing manual report generation from 2 weeks to 15 minutes.
Project: Meat Production Costing & Simulation System
D eveloped a real-time economic simulation engine from scratch using Clean Architecture and DDD,
transitioning complex cost-allocation workf lows from legacy Excel models.

Engineered a deterministic execution f low via OpenAI Function Calling orchestration, utilizing
dynamic sandboxed code generation that leverages existing domain entities to resolve cascading
calculations.
Core Engineering & System Enhancements
Integrated ne w financial conversion features into a tightly coupled legacy system using 

the Value Object pattern, ensuring strict backward compatibility without requiring cascading
refactoring.

Encapsulated dynamic data sourcing logic via the Strategy pattern, safely isolating new business
rules from existing God Objects.

Modernized a legacy monolith by introducing an event-driven communication (Redis Pub/Sub)
to decouple components and implementing domain entities to encapsulate business rules.
Dec 2024 – Present Founder & Lead Engineer (part-time)
SaaS Booking Platform, remote
Inde pendently architected and launched a full-cycle SaaS scheduling platform (FastAPI,
PostgreSQL, Redis) via Clean Architecture and DDD, saving professionals 10–15 hours monthly.

Decoupled side-effects from core interactors via EDA, enabling notifications that reduced no-
shows by 70–80% (Celery, Redis Pub/Sub).

Resolved stateful resource overhead in Celery via a process-level async bridge.

Prevented double-booking under concurrent writes by enforcing optimistic locking and
idempotency guarantees at the interactor orchestration level.
May 2021 – May 2024 Senior operator
UKRAINIAN NAVY
Success fully performed critical tasks under high pressure, ensuring their
success.

Deployed and operated complex technical systems, ensuring uninterrupted
communication and data accuracy.

Collected and analyzed critical data to provide actionable insights for
strategic decision-making.

LAN G UAG ES English - Pre-Intermediate U krainian - Native

E D U CAT I O N & CER T IFICAT I O NS
Feb 2024 – Jan 2025 Python Software Engineer
I T School GoI T, remote

Sep 2016 – Jun 2020 Skilled Laborer (Plasterer-Painter, Tiler-Face)
Cherkasy Higher Vocational School of Construction Technologies, Cherkasy