# Quality Assurance Engineer

**Company:** [Walter](http://jobs.workable.com/companies/8rKXYar1kHtGtmYniddCvU.md)
**Location:** Remote
**Workplace:** remote
**Department:** Toptal

[Apply for this job](http://jobs.workable.com/view/03cdc6cc-2ae9-40c1-bd73-316356ef95f0)

## Description

**About the Client**  
Our client is a globally diversified investment organization focused on long-term, value-driven investment strategies.  
  
**General Information**  
The position is open to full-time candidates with excellent communication skills to work on-site in Abu Dhabi (UAE) or remotely within 3h of the Abu Dhabi time zone (within 3h of UTC+4).  
  
**Tasks and Deliverables**  
Lead, design, and build end-to-end quality for Event-Driven Architecture (EDA), low-latency platform built on Solace messaging, and Azure (AKS). You will own the test strategy, plan, automation framework, CI/CD pipelines, and compliance testing. The role is hands-on and leadership-oriented: you will set standards, coach engineers, and deliver audit-ready evidence for regulated markets.  
  
**Responsibilities**  
**Own test automation strategy & governance**  

-   Define a shift-left test strategy across unit, integration, contract, E2E, performance, security, and resiliency.
-   Establish quality gates (defects, coverage, flakiness budgets, performance SLOs) and release criteria.
-   Shift left testing: requirements → tests → results → evidence traceability model.

**Build a reusable automation framework**  

-   Architect a test framework packaged for reuse across CEE teams.
-   Provide libraries/utilities for API, Solace messaging, database, and contract testing.
-   Standardize test data management, deterministic fixtures, and parallel/ephemeral execution patterns.

**Event-driven architecture (EDA) testing**  

-   Validate producer/consumer contracts, schema evolution, and topic compatibility.
-   Assert ordering, idempotency, exactly/at-least/at-most-once semantics, replay, DLQ handling, and deduplicate keys.
-   Prove back-pressure, throttling, and consumer lag behavior under bursty market loads; chaos test broker clusters.
-   Enforce schema/contract gates in CI/CD; prevent breaking changes before promote.

**Data-platform & reconciliation QA**  

-   Automate data quality checks for market/reference data, order/trade states, and downstream stores (SQL Server/Azure SQL).
-   Implement reconciliation across OMS/EMS, risk, and settlement; verify lineage and PII/PCI masking where relevant.
-   Use SQL and profiling to validate accuracy, completeness, timeliness, and SCD/versioned data behaviors.
-   Manage golden datasets and synthetic market data at scale for repeatable regression.

**Pipelines, environments & observability**  

-   Embed suites in Azure DevOps (build → deploy → smoke → regression → perf/security) with mandatory gates (coverage, static analysis, compliance, performance).
-   Orchestrate tests on AKS with Docker/Kubernetes, ephemeral environments.
-   Validate OpenTelemetry to correlate trace IDs across services; validate Application Insights/Dynatrace signals in assertions.

**Performance & security**  

-   Baseline latency/throughput; run JMeter/LoadRunner for spike/soak/failover; collaborate on capacity tuning.
-   Automate OWASP checks (ZAP), enforce SAST/DAST and dependency scanning (Snyk) with remediation gating.

**Leadership & operations**  

-   Lead QA activities in the project, mentor developers on testability and quality by design.
-   Contribute to incident response, RCA, production canary/verification suites, and reliability playbooks.

  
  
**Tech Stack Focus**  

-   Languages/Frameworks: C#, Python, xUnit, PyTest, Pact, Docker,
-   Testing: xUnit, NUnit, MSTest, [Pact.NET](http://Pact.NET), Moq/AutoFixture, TestContainers-style patterns
-   APIs/Messaging: REST/GraphQL/SOAP, Solace (preferred), RabbitMQ or Kafka (plus)
-   Data: SQL Server, Azure SQL; strong SQL for validation/migrations; data profiling tools
-   Cloud/Infra: Azure, AKS, Docker/Kubernetes; Terraform/Bicep/ARM
-   CI/CD & Quality: Azure DevOps, Git/Azure Repos, coverage/linters, policy-driven gates
-   Perf/Sec/Obs: JMeter/LoadRunner, OWASP ZAP, Snyk, Application Insights, Dynatrace, OpenTelemetry
-   Secrets: Azure Key Vault
-   (Nice) FIX conformance via QuickFIX/N simulators; schema registry tooling

**Additional Details**  

-   Location: Abu Dhabi (UAE) or remote within 3h of Abu Dhabi time zone
-   Work model: Onsite in Abu Dhabi or remote within 3h of Abu Dhabi time zone
-   Type: 40h/week Contract
-   Duration: 6-12 months initially, with long-term engagement potential
-   Authorization: Applicants must be authorized to work in their country of residence without employer sponsorship

## Requirements

**Required Experience**  

-   8+ years in QA/engineering with 5+ in financial/trading systems (order lifecycle, market data, risk controls)
-   Proven delivery of pipeline-integrated .NET automation frameworks and regulated-market audits
-   Deep understanding of EDA QA (contracts, ordering, idempotency, replay, DLQs, back-pressure) and data-quality/reconciliation
-   Hands-on with Azure/AKS, Azure DevOps, and performance/security automation at scale
-   Clear communicator; able to lead cross-functional quality initiatives and coach engineers
-   Strong English proficiency required

  
  
**Bonus Experience**  

-   ISTQB Advanced/CSTE, Azure Fundamentals / Azure DevOps Engineer
-   Finance certs (CFA/FRM), Agile/Scrum experience