lumieresystems
Lead DI Modernization Engineer
Job description
Backend Engineering & System Design
- 8+ years of backend software engineering experience
- Designing and operating large-scale, highly available, distributed systems
- Microservices architecture
- Event-driven architecture
- API design and development
- Scalability, reliability, performance, and maintainability best practices
- Strong software architecture and technical leadership capabilities
- Elixir (Critical Requirement)
- 2+ years of hands-on experience with Elixir
- Deep understanding of the Elixir runtime/ecosystem
- Building production-grade backend services using Elixir
- Cloud & Infrastructure
- Strong AWS experience
- Docker containerization
- Kubernetes orchestration
- Production deployment, monitoring, and scaling
- APIs & Service Communication
- REST APIs
- GraphQL
- gRPC
- Ability to select the appropriate protocol/pattern based on use case
- Data Layer
- PostgreSQL
- Database design and optimization
- Caching strategies
- Messaging & Event Streaming
- Kafka
- Designing and operating Kafka-based systems at scale
- Observability & Reliability
- DataDog
- Monitoring
- Logging
- Alerting
- SLO/SLA-driven operations
- DevSecOps
- CI/CD pipelines
- Automated testing
- Secure software development practices
- Security integration throughout the SDLC
- Security
- Secure API design
- Access control
- Data encryption
- General application security principles
- AI-Assisted Development
- High proficiency with Claude Code or similar AI coding tools
- Demonstrated use of LLMs to improve development productivity
- Collaboration & Communication
- Cross-functional collaboration
- Technical documentation
- Ability to communicate with both technical and non-technical stakeholders
- Good-to-Have Skillset
These are valuable differentiators but appear secondary to the core backend/Leadership & Strategic Thinking
Defining technical roadmaps Long-term architecture planning Domain ownership Technical mentorship and guidance
Must Have
Elixir (2+ years) Backend Engineering (8+ years) AWS + Docker + Kubernetes Kafka PostgreSQL REST / GraphQL / gRPC APIs DataDog Observability CI/CD + DevSecOps Distributed Systems & Microservices AI-assisted development (Claude Code or equivalent)
Nice to Have
Technical leadership/architecture ownership Platform engineering mindset Agile delivery experience Advanced documentation practices Reliability engineering and operational excellence Cross-functional stakeholder management


