Senior Software Engineer

Position Summary

The Software Engineering job family specializes in the design, development and testing of software systems or applications for software enhancements and new products including cloud-based or internet-related tools.

What You Will be Responsible For:

• 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

What You Will Bring to the Position:

Technical Skills

GraphQL & AWS:

• 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)

Backend & Data:

• 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

Development Practices:

• 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

Professional Skills

• Minimum 7 years of software engineering experience with 3-5 years focused on API architecture and >

  About DTN:

  DTN is a global data and technology company helping operational leaders in energy, agriculture, and weather-driven industries make faster, smarter decisions. Our Operational Decisioning Platform turns complex data into decision-grade insights—empowering customers to expand their margins, accelerate growth, and outpace risk. With more than 1,200 employees globally, DTN serves the companies that feed, fuel, and protect the world.

  At DTN, we value clarity,trust, and action. We’re a team of problem-solvers, outcome-drivers, and industry nerds who believe that precision matters – and that mission is at the core of what we do.

  • Trust Built: We earn it. We keep it. We protect it. Our neutrality, precision, and integrity are non-negotiable.

  • Confidence-Driven: We help customers move with clarity and conviction. We bring the data and operational knowledge leaders need to act.

  • Built for Industry: We speak operations because we come from operations. Our expertise is forged in fuel terminals, fields, flight paths, and forecasts.

  • Future-Forward: We see what’s coming- and we’re ready. We help customers lead through change with smarter decisioning.

  Recruitment Fraud Notice:

  DTN is aware of incidents where external parties have impersonated our organization, issuing fraudulent communications and/or job offers. Please be advised that all legitimate communication from DTN will come from an official @dtn.com email address or through our Paradox AI automated scheduling platform (Talent IQ). Any offers are extended directly by our Talent Acquisition team following a formal interview process.

  If you receive a suspicious message or offer claiming to be from DTN, please do not engage. Contact our Talent Acquisition team at Careers@dtn.com to verify the legitimacy of any communication. Report any fraudulent messaging as phishing or spam.

  DTN is an Equal Opportunity Employer. We welcome and encourage applicants of all backgrounds, including minorities, women, veterans, and individuals with disabilities.