Senior QA Engineer responsible for testing backend services in the iGaming and Entertainment industry. Collaborating with teams to design test scenarios and validate financial logic ensuring accuracy across multiple currencies.
Responsibilities
Design and execute comprehensive test scenarios for RESTful microservices related to our services. Understand HTTP methods, status codes, headers, and payload structures (JSON/XML) inside out;
Validate complex financial logic, ensuring wallet balances, deposits, and withdrawals are calculated with absolute precision across various currencies;
Test the handshake between our internal services and third-party providers, extra services and other team dependencies;
Verify data consistency and state transitions directly in the database (SQL) before and after request processing;
Investigate issues by analyzing server-side logs (Grafana/Loki/Opensearch) and tracing request flows through microservices;
Collaborate with developers and product managers to sign off on releases, ensuring zero-downtime deployments and backward compatibility;
Maintain clear, concise test documentation and API contracts (Swagger/OpenAPI);
Involving all the time into development and release processes for better QA processes, participate in grooming sessions.
Requirements
4+ years of professional experience in Quality Assurance, with a strong focus on Backend/API testing;
Strong understanding of software testing theory and methodologies;
Good understanding of client-server architecture;
Familiarity with Git flows and CI/CD concepts (understanding how code moves from dev to production);
Experience testing systems using message brokers (e.g., Kafka, RabbitMQ);
Ability to read or write basic scripts to generate test data or automate simple API calls (even if the role is manual, this helps);
Experience in Gambling, Betting, FinTech, or Banking sectors will be a plus;
Experience in DB queries (SQL) - will be a plus;
Understanding of basic security testing and authentication protocols (OAuth2, JWT).
Benefits
Health & Wellness Focus
Global Medical Coverage
Growth Opportunities
Benefits Programs (compensation for the gym/stomatology/psychological service & etc.)
Senior Quality Engineer building automated testing for Just Eat Takeaway.com’s courier logistics systems. Improving reliability, scalability, and release quality across its global online delivery platform.
Senior Quality Engineer building automated testing and quality frameworks for Just Eat Takeaway.com’s global courier logistics platform. Driving CI/CD, API, distributed - systems, and AI - assisted testing quality.
Lead QA Engineer owning AI - driven testing and reliability for Social Discovery Group’s global social discovery platforms. Building automation, CI/CD quality gates, and coverage for critical financial flows.
QA Team Lead driving Playwright and Selenium automation for GS1 Canada’s engineering projects and data exchange services. Leading QA strategy, mentoring engineers, and enforcing Secure SDLC quality gates.
Supplier Quality Engineer improving supplier quality, qualification, and cost for Invinity’s vanadium flow battery systems. Supporting manufacturing readiness across global clean - energy projects.
Quality Engineering Manager leading manual and automated testing for TD Securities’ capital - markets technology. Guiding quality teams, test strategy, and delivery across banking platforms.
QA Automation Engineer advancing AI - first testing for Quest’s On Demand Migration SaaS on Azure. Building automated tests and cloud QA environments with C#/.NET.
SQA Engineer automating testing and risk - based validation for EDC, Canada’s export - credit and trade - finance Crown corporation. Improving reliability across integrated digital systems.