Middle QA Engineer
Role in brief
Lagrange Labs seeks a Middle QA Engineer to test web and mobile applications, focusing on API and blockchain integrations. Candidates with 3+ years in QA and Web3 experience should apply.
About the role
In this role, you will be part of an international engineering team responsible for functional and regression testing of web interfaces and mobile applications. You will work closely with developers to identify and resolve bugs, ensuring high-quality software delivery.
Your tasks will include testing API backend services and automating critical testing scenarios. You will also write and maintain test documentation, contributing to quality control throughout the development lifecycle.
The salary range for this role is between $3500 and $5000 per month, depending on experience.
Skills that matter here
- QA: This role requires a solid background in both manual and automated QA processes.
- Web3: Understanding Web3 specifics is essential for testing crypto wallet functionalities and transaction statuses.
- API Testing: Experience with REST and gRPC APIs is necessary to ensure backend services function correctly.
- Automation: You will automate testing scenarios using tools like Playwright and Cypress.
- SQL: Knowledge of SQL is required to write queries for testing on-chain data.
Who this role suits
- Has a minimum of 3 years of QA experience, including both manual and automation testing.
- Possesses a strong understanding of Web3 technologies and blockchain integrations.
- Enjoys working collaboratively in an international team and communicating in English.
- Is detail-oriented and proactive in identifying and resolving software issues.
From the employer
Responsibilities
- Functional and regression testing of web interfaces and mobile applications (Flutter).
- Testing API backend services (Go/.NET) and integrations with blockchain nodes.
- Writing and maintaining test documentation: test plans, test cases, and checklists.
- Automating critical scenarios (Playwright, Cypress, or Python/Pytest).
- Verifying the correctness of on-chain data display and transaction statuses in interfaces.
- Close collaboration with developers for bug localization and quick resolution.
- Participation in release processes and quality control at all stages of the development lifecycle.
Requirements
- 3+ years of experience in QA (Manual + Automation).
- Understanding of Web3 specifics: experience with crypto wallets, understanding transaction statuses and RPC request operations.
- Experience testing REST and gRPC APIs (Postman, Insomnia).
- Knowledge of SQL at the level of writing medium complexity queries.
- Skills in using browser developer tools and system logs.
- English at Intermediate level (ability to write bug reports and communicate in Slack).
Conditions
- Remote work.
- Full-time position.
- Work in an international engineering team.
Questions about this role
What is the remote policy?
This position is fully remote.
What is the seniority level for this role?
The position is classified as middle level.
How do I apply for this position?
Interested candidates can apply through the company's website.
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