Lead Python Developer, Customer Success Engineer

EX Squared

. Own customer data migrations from initial investigation through successful completion .

Posted 10/26/2026full-timeRemote • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in backend development with Python and Django, focusing on customer data migrations and technical leadership. Proficient in managing complex database systems, REST APIs, and improving migration processes for B2B SaaS environments.

Highest-signal resume keywords

Python DevelopmentDjango FrameworkPostgreSQL Database ManagementData Migration ExpertiseTechnical Leadership

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Data TransformationDatabase MigrationsREST API IntegrationDebugging and TroubleshootingCI/CD PipelinesCloud-Based ApplicationsNoSQL Database ExperienceMigration Tooling ImprovementGit Version ControlDocker Containerization

Soft Skills

Customer CommunicationAttention to DetailProblem-SolvingOwnershipPersistence

Tools & Technologies

Bash ScriptingAI-Powered Development ToolsCRM PlatformsThird-Party IntegrationsAzure

Industry Keywords

B2B SaaSCustomer Data MigrationsTechnical GuidanceProduction Deployment WorkflowsCross-Functional Collaboration

Tech Stack

Tools & technologies

AzureCloudDjangoDockerNoSQLPostgresPython

About the role

Key responsibilities & impact

Own customer data migrations from initial investigation through successful completion
Analyze, transform, validate, and migrate data from different customer systems and data sources
Build and maintain Python/Django scripts and tools supporting migration workflows
Work with relational and NoSQL databases, different data structures, and file formats
Investigate customer-reported technical issues and identify root causes
Drive technical issues through to resolution
Handle customer-specific backend changes, integrations, and bug fixes
Work with REST APIs and third-party systems during migrations and troubleshooting
Communicate directly with customers to clarify technical requirements and coordinate solutions
Lead backend engineers and collaborate closely with backend engineers and other cross-functional team members
Improve migration processes and tooling to make recurring customer onboarding more reliable and scalable

Requirements

What you’ll need

7+ years of professional backend development experience with Python and Django
3+ years of experience as a Technical Lead, providing technical guidance to development teams and working directly with stakeholders
Strong hands-on experience with PostgreSQL, including complex queries, data structures, and database migrations
Practical experience with data migrations, data transformation, and migration scripts
Experience working with different data sources, data formats, and database models, including relational and NoSQL databases
Strong understanding of REST APIs and experience with third-party integrations
Strong debugging and troubleshooting skills, including the ability to investigate unfamiliar code, data, and system behavior
Hands-on experience with Git, Docker, and Bash in day-to-day development
Experience using AI-powered development tools, particularly Claude Code or similar coding agents
Ability to communicate directly with customers, clarify technical problems, and explain solutions clearly
Strong ownership, attention to detail, and persistence in bringing technical issues through to resolution
Upper-Intermediate English (B2+) or higher, including confident spoken communication
Must be aligned with U.S. EST business hours
Occasional availability outside of standard working hours may be required
Experience with customer data migrations between complex B2B or SaaS platforms
Experience building or improving internal migration tooling and automation
Experience working in a B2B SaaS product environment
Experience with CI/CD pipelines and production deployment workflows
Experience with Azure and cloud-based applications
Experience troubleshooting customer-specific integrations and production data issues
Experience with CRM platforms

Benefits

Comp & perks

Remote work arrangement
Opportunity to work with international teams and clients
Collaborative environment
Autonomy
Continuous learning
Technical ownership
Practical problem-solving