At Definity, a leading technology company focused on AI-driven solutions and digital transformation, we are continuously expanding our team to support innovative, high-impact projects. We are seeking a Senior Backend Developer to join the Sales Management team for a high-impact project with a leading automotive company headquartered in Fremont, California.
The Senior Backend Developer will work on a mission-critical, in-house CRM platform that supports global sales operations and covers the full sales lifecycle, directly impacting revenue growth, customer satisfaction, and operational excellence.
Important Considerations:
- Interest in relocating and living in the United States
- On-site position in Fremont, California (TN Visa sponsorship provided)
- Must have Mexican nationality
- Valid Mexican passport required
- Bachelor’s degree and professional license (cédula competente)
What you bring
- 5+ years of experience building backend systems in production environments
- Strong expertise in microservices architecture and distributed systems
- Experience working with real-time data pipelines and event-driven systems
- Proficiency in Python and/or Go
- Experience with relational databases such as PostgreSQL
- Experience with large-scale data systems such as ClickHouse
- Hands-on experience with OpenSearch or similar search technologies
- Experience with message brokers such as Kafka and RabbitMQ
- Strong understanding of scalable system design and high-throughput architectures
- Advanced English proficiency (spoken and written) is required
Nice to have
- Experience working with AI-driven or agentic workflow systems
- Familiarity with cloud-native architectures
What you'll do
- Design, develop, and maintain scalable backend services for a global CRM platform
- Build high-performance microservices capable of handling real-time data processing
- Architect systems that support high throughput and large-scale data environments
- Contribute to the development of AI-assis