Note: The job is a remote job and is open to candidates in USA. DTN is a global data and technology company helping operational leaders in energy, agriculture, and weather-driven industries make faster, smarter decisions. The Senior Software Engineer will specialize in the design, development, and testing of software systems or applications, focusing on GraphQL APIs and semantic architecture to enhance data accessibility and governance.
Responsibilities
- Designs, develops, and implements GraphQL APIs to provide unified data access across multiple systems
- Leads the development and expansion of semantic API architecture including schema design, resolver optimization, and data normalization strategies
- Establishes data governance and security practices for semantic API layers
- Collaborates with Data Engineering teams to integrate data sources and transformation patterns
- Leads quality improvement processes including code reviews, schema validation, and performance optimization
- Mentors junior engineers and provides technical leadership on GraphQL and semantic architecture best practices
- Develops comprehensive documentation for semantic API patterns and implementations
Skills
- Expert-level proficiency in GraphQL and AWS AppSync including schema design, batch Lambda resolvers, pipeline resolvers, subscriptions, and caching
- Minimum 5 years of AWS cloud experience (Lambda, RDS, DynamoDB, IAM, CloudWatch, X-Ray, Kinesis, Glue, Athena)
- Experience with AWS CDK or CloudFormation for infrastructure as code
- Understanding of Lambda optimization (cold starts, concurrency, VPC considerations)
- Expert in Node.js for building batch Lambda resolver functions
- Proficiency in Python for data processing and Lambda functions
- Deep understanding of Lambda batching patterns (DataLoader, batch aggregation, connection pooling, caching)
- Expert-level SQL and database knowledge (Postgres, MySQL, Oracle)
- Experience with NoSQL databases (DynamoDB)
- Understanding of data architecture principles including modeling for transactional and analytical workloads
- Advanced Git including branching strategies and code review processes
- CI/CD pipelines for AppSync and Lambda deployment
- Strong testing strategies (unit, integration, schema validation, batch operation testing)
- Performance profiling and optimization for serverless and databases
- Minimum 7 years of software engineering experience with 3-5 years focused on API architecture and data-intensive applications
- Strong data architecture background with understanding of data management, integration patterns, and governance
- Proven ability to lead technical initiatives and mentor engineers
- Excellent communication and documentation skills
- Experience in Agile/Scrum environments
- Problem-solving mindset for performance, data consistency, and architectural issues
- Cost optimization experience in serverless environments
- AWS Certifications
- Background in energy, commodities, or supply chain domains
- Multi-tenant architectures experience
- Contributions to open-source GraphQL projects
- Database administration experience across multiple platforms
Benefits
- Competitive Salary
- Unlimited PTO
- Flexible working hours
- Remote work model (position dependent)
- Competitive Medical, Dental and Vision Insurance Plans
- 6% 401K matching
- Unlimited access to 13k+ courses via learning platform to support employee career advancement
- Employee Assistance Program (EAP)
Company Overview
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