ISRAEL · REMOTE

Vsevolod Trofimenko

Senior Business Systems Analyst

FinTech & Payments · APIs & Integrations

I turn complex business needs into reliable systems—from requirements and architecture to production delivery. I combine lead-level systems analysis with hands-on AI-assisted software development.

I work at the intersection of product, architecture and engineering: clarify the real problem, define service boundaries and contracts, align stakeholders, and stay with the solution through testing and release.

RequirementsSolution DesignOpenAPIOAuth 2.0 / OIDCAI-assisted Delivery
01

Selected work

Three examples that represent the problems I solve best.

Fortis · LIFE PAYPayments · Integrations

Payment flows & partner integrations

Designed payment links, payment pages, merchant onboarding and other payment flows across multiple payment providers.

My contribution
API contracts, callbacks and webhooks, status mapping, idempotency, validation, error and retry scenarios.
Integrations
Network International · MyFatoorah · NKO Moneta
FortisSubscriptions · Access

Subscriptions & feature access

Designed a centralized way to decide which product capabilities a company can use under its plan, subscription and add-ons.

My contribution
Feature Access Service boundaries, access rules, subscription lifecycle and integration contracts for consuming services.
Design goal
A single, explainable source of truth for feature availability instead of duplicated rules across products.
02

Experience

From public-sector platforms to banking and fintech.

Fortis

Systems analysis · AI-assisted development

Lead-level ownership across identity, merchant onboarding, payments, subscriptions and external integrations. Current scope: 20+ services, approximately 50 REST endpoints and around 10 integrations. Hands-on AI-assisted software development with coding agents for backend implementation, debugging, refactoring and testing.

LIFE PAY

Systems Analyst

Merchant portals, payment products and a common integration layer for cross-system business processes.

Sber

Senior Systems Analyst

Mobile banking journeys for self-employed customers: onboarding, tax registration, tax payments and service lifecycle.

Altarix · Comlogic · Voskhod

Systems analysis & software engineering

Municipal and public-service systems, REST and asynchronous integrations, data design and enterprise software delivery.

03

Selected builds

Small, focused tools built to solve real engineering problems.

01

OpenAPI PR Guard

Automated checks for risky OpenAPI changes in pull requests.

GitHub ↗
02

Payment Reconciliation Helper

A practical workflow for identifying payment mismatches and reconciliation issues.

GitHub ↗
03

HookPing

A lightweight utility for inspecting and debugging webhook deliveries.

GitHub ↗
04

Let’s build systems that work.

Open to senior systems and business systems analysis opportunities worldwide, including remote roles.

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Send me a message

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