Senior QA Engineer · QA Lead

Ruslan Peyter

11+ years in fintech & digital banking quality assurance

I make sure fintech software ships right —
before your users find out it doesn't.

From API contracts and database integrity to cloud monitoring and core banking integrations — I own quality end-to-end so your team can ship with confidence.

Get in Touch Download Resume

What I Bring

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11+ Years in Fintech QA

Deep hands-on experience in digital banking — from credit union platforms to mobile apps — means I understand the domain, not just the tools. I catch issues that generic QA misses.

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End-to-End Testing Ownership

I own quality across the full stack — API contracts, database integrity, cloud logs, and UI — so nothing falls through the cracks between layers.

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Fast Ramp-Up, Low Overhead

Multilingual (EN / UK / RU), SAFe® certified, and experienced with distributed teams. I integrate quickly, communicate clearly, and start adding value from day one.

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Quality as a Business Outcome

I connect QA work to real business impact — financial data accuracy, user trust, and release confidence — not just bug counts and test coverage metrics.

Want the full picture?

Leadership · Strategy · Case Studies
& much more

My full profile covers QA strategy, business impact, CI/CD integration, stakeholder communication, testimonials, and detailed case studies.

View Full Profile →

Skills

Technical expertise

QA Methodology and Skills

AI-Powered Testing Functional End-to-End (E2E) Exploratory Performance Compatibility Localization Regression Integration Mobile & Web Testing Bug Reporting JIRA Agile / SAFe Test Planning

Core Banking Platforms

Symitar Quest Corelation KeyStone Credit Union Systems Digital Banking

Cloud / AWS

EC2 S3 RDS DynamoDB CloudWatch CloudTrail IAM VPC SNS ELB Route53 SageMaker Glacier Firebase Log Analysis Environment Monitoring

Database & SQL

MS SQL Server PostgreSQL Data Integrity Testing Schema Validation Business Logic Queries Referential Integrity

API Testing

Postman Swagger / OpenAPI REST JSON OAuth 2.0 HTTP/HTTPS Status Code Analysis

Automation & Infrastructure

Playwright TypeScript Shell / Bash Linux Docker Compose

Languages

English — Fluent Ukrainian — Native Russian — Fluent

Case Studies

Project highlights

Digital Banking · Mobile

Mobile Banking App
Regression Suite

iOS / Android

Goal Build a repeatable regression suite for a credit union mobile app ahead of a major core banking migration.

Impact Designed 400+ test cases covering account management, transfers, and bill pay across 6 device profiles.

Regression cycle time cut by 35%

Core Banking · API

Symitar Quest
Integration Testing

REST API

Goal Validate all data flows between the digital banking platform and Symitar Quest core banking system after a major version upgrade.

Impact Covered 120+ API endpoints, validated SQL data integrity across member accounts, loans, and shares.

12 critical defects caught pre-release

Fintech · Cloud

AWS Environment
Monitoring & Triage

AWS

Goal Establish a systematic approach to log analysis and environment monitoring for a multi-tenant banking SaaS platform.

Impact Implemented CloudWatch log queries and S3 audit checks that cut mean time to root cause from hours to minutes.

MTTD reduced by ~60%

Testimonials

What colleagues say

Ruslan grew from a promising engineer into one of the most dependable and technically sharp QA professionals on our team. He approached quality holistically, investing time in understanding the product deeply and building test strategies that were both thorough and practical. He has my full and enthusiastic recommendation.

👩‍💼

Kate Kostiakova

Lead QA Engineer · Access Softek

LinkedIn Recommendation

We worked with Ruslan for many years, and I can confidently recommend him as an outstanding QA Engineer. He is highly knowledgeable, experienced, and consistently demonstrates a deep understanding of quality assurance processes and best practices. His broad technical expertise allows him to approach challenges efficiently and deliver reliable results.

👨‍💼

Kostiantyn Ivanov

Senior QA/QC Engineer

LinkedIn Recommendation

Read all recommendations on Full Profile →

Certifications

Professional credentials

Scaled Agile, Inc.

Certified SAFe® 5 Practitioner

Scaled Agile Framework · Active Certification

Udemy

API and Web Service Introduction

API Testing Specialization · Completed

Domain Expertise

Fintech & Digital Banking QA Specialist

11+ Years Hands-on Industry Experience

Let's build
reliable software
together.

I'm open to Senior QA / Lead roles in fintech, banking, or SaaS. I bring domain depth, sharp testing instincts, and 11+ years of hands-on experience across the full QA lifecycle.

Feel free to reach out directly — I respond to all serious inquiries.

✉

Email ruslan@peyter.eu

Telegram @RuslanPeyter

WhatsApp Scan QR to chat

LinkedIn linkedin.com/in/ruslanpeyter

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Resume Download CV (.pdf)