Job Overview: We are seeking a highly skilled Senior Software Engineer to join our dynamic development team. This role is integral to the success of our internal actuarial solution cloud platform. As a Senior Software Engineer, you will start by supporting existing applications and, based on performance, will transition to building and deploying cloud-based solutions. This is a nearshore position with the potential for offshoring, primarily focusing on candidates from Latin America.

Key Responsibilities:

• Full-Stack Development: Independently create API-based web applications from concept to finished product with a cloud-first emphasis.
• Technical Problem Solving: Implement solutions for complex technical challenges, using advanced problem-solving skills and creativity.
• Collaboration: Work closely with product stakeholders and development teams, utilizing strong communication skills to articulate problems and solutions effectively.
• Cloud Deployment: Design, develop, test, deploy, and support API-based systems, emphasizing industry best practices and cloud-first deployment strategies.
• Legacy Support: Provide ongoing support for legacy systems while transitioning to new cloud-based solutions.
• Continuous Improvement: Seek and implement continuous quality improvements for supported systems.
• Mentorship: Mentor and coach junior team members, fostering a culture of knowledge sharing and innovation.
• Task Management: Manage individual tasks and timelines with minimal supervision, ensuring timely and efficient delivery of solutions.

Technical Requirements:
Must-Have:

• Node.js (required) for backend development, and proficiency in React for frontend development.
• Hands-on experience with both Relational databases (e.g. PostgreSQL, SQL Server) and NoSQL databases (e.g. DynamoDB, MongoDB), with strong SQL query skills.
• Very strong hands-on experience with IaC Terraform, including module design, multi-environment management (dev/staging/prod), and managing different Terraform state types (local state, remote state via S3 + DynamoDB locking, and workspace-based state isolation), with CI/CD pipeline integration.
• Proficiency in AWS cloud services, with deep hands-on experience in serverless architecture including end-to-end Lambda Functions (trigger design, handler implementation, error handling, DLQ/retry logic) and Step Functions for multi-step serverless workflow orchestration.
• Solid observability skills using Amazon CloudWatch (metrics, alarms, logs) for monitoring Lambda usage, concurrency, and scaling behavior.
• Strong understanding of API Gateway design and best practices: RESTful resource structure, authentication (Cognito/Lambda authorizers), throttling, usage plans, versioning, and CORS configuration.
• Demonstrated ability to make sound serverless architecture decisions, including when Lambda is the wrong tool (long-running jobs, heavy compute, stateful workloads) and how to decompose functions using single-responsibility and event-driven principles.
• Working knowledge of AWS IAM, including authoring and managing trust policies and permission policies (inline and managed), applying least-privilege principles for roles, users, and service-to-service access.
• Understanding of AWS security policies and best practices, including resource-based policies, service control policies (SCPs), and security guardrails within cloud deployments.
• Experience with message queue and streaming services such as Amazon SQS or Apache Kafka for decoupled, event-driven architectures.
• Proficiency in .NET / C# (preferred) for backend services and integrations.