Lead Python Developer (Customer Success Engineer)
EX Squared
- Location
- Remote (Brazil)
- Employment
- Full-time
- Level
- Senior Level
About the role
EX Squared LATAM partners with North American organizations to provide skilled technology professionals. This role involves leading backend engineers to manage customer data migrations, troubleshoot technical issues, and implement integrations within a remote team.
Skills
Perks
- Remote work
Full job details
At EX Squared LATAM, we partner with leading organizations across North America to connect them with highly skilled technology professionals throughout Latin America.
We are currently looking for a Lead Python Developer / Customer Success Engineer to join a remote team supporting customer data migrations, technical troubleshooting, integrations, and ongoing customer-facing engineering needs.
Role Overview
This is a hands-on engineering role focused on technical decision making, customer data migrations, backend development, technical problem-solving, and customer support.
You will lead a team backend engineers and interact directly with customers to migrate and validate data, investigate technical issues, implement reliable solutions, and improve recurring migration and onboarding processes.
The ideal candidate combines strong leadership skills with Python/Django and data engineering with curiosity, ownership, attention to detail, and confident customer communication.
Location
Remote – Latin America
Working Hours
Must be aligned with U.S. EST business hours.
Occasional availability outside of standard working hours may be required.
Language Requirement
Upper-Intermediate English (B2+) or higher, including confident spoken communication.
What You’ll Do
- 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.
- 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.
What You’ll Bring
- 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.
What Will Make You Stand Out
- 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.
Why EX Squared?
At EX Squared, you’ll have the opportunity to work with international teams and clients while contributing to meaningful technology initiatives.
You’ll join a collaborative environment that values autonomy, continuous learning, technical ownership, and practical problem-solving.