Senior Software Engineer

DAW Systems Inc. - ScriptSure is seeking a Senior Backend Software Engineer to build and scale a healthcare messaging and workflow platform. The role focuses on developing reliable AWS serverless services, event-driven workflows, APIs, data models, observability, testing, and operational excellence while using AI-assisted development tools such as Claude and OpenAI Codex.

Responsibilities:

• Design, implement, and operate backend services in a serverless AWS environment
• Build and maintain APIs with strong contract discipline (validation, versioning, error modeling)
• Implement durable, observable workflow processing (idempotency, retries, backoff, DLQs, replay tools)
• Model and access data efficiently (DynamoDB key design, indexes, pagination, performance)
• Raise the quality bar through code reviews, automated tests, and pragmatic engineering standards
• Improve operational excellence (metrics, structured logging, tracing, alerting, runbooks)
• Collaborate cross-functionally to translate requirements into reliable technical designs
• Use Claude/Codex to iterate on implementation quickly without sacrificing code quality
• Generate and refine tests (Jest preferred), improve reliability, and reduce regressions
• Use AI tools responsibly: validate outputs, enforce standards, and avoid “prompt-to-prod” without review
• Own assigned initiatives end to end, driving work independently and proactively addressing challenges. Communicate proactively and transparently, and take accountability for outcomes—both successes and setbacks—while delivering results aligned with team and company goals

Requirements:

• 6+ years professional software engineering experience (backend-focused)
• Strong TypeScript/Node.js experience in production
• Strong AWS serverless experience (Lambda + API Gateway + IAM + CloudWatch)
• Heavy Claude and Codex Experience
• Experience with event-driven systems and workflow orchestration (Step Functions and/or queues)
• Proven reliability engineering instincts: idempotency, failure-mode thinking, safe deploys, incident response
• Strong API design skills and ability to maintain backward compatibility over time
• Candidate location must be in Central or Eastern United States
• Healthcare or regulated-domain experience (interoperability, messaging, compliance) is a plus
• Experience with DynamoDB at scale (access patterns, GSI design, cost/performance tuning)
• Strong IaC experience with Terraform and multi-environment deployments
• Experience with CI/CD (GitHub Actions, GitLab CI, CodeBuild/CodePipeline)
• Familiarity with structured logging standards, distributed tracing, and metric-driven ops