Senior Software Engineer – Backend & AWS Integrations

The role

You will design and implement HTTP APIs that connect third-party services with internal AWS components. You will build backend components for financial management and money movement for a payroll giving platform.

What you will do

• Design, build, and implement HTTP APIs that connect third-party services with internal AWS components.
• Develop and extend integrations for payroll connections and employer onboarding through the Finch API abstraction.
• Build backend components for financial management and money movement including integrations with services like Modern Treasury.
• Develop, maintain, and improve AWS-based services using Infrastructure as Code and AWS CDK.
• Contribute to the evolution of the platform architecture using AWS Well-Architected Framework principles.
• Use AI-assisted development tools to accelerate code analysis, implementation, code reviews, testing, and validation.
• Take ownership of assigned components from requirements to implementation and delivery.
• Collaborate with Product, Program Management, Partnerships, and technical team members.
• Ensure platform and integrations are maintainable, supportable, and ready to scale.

Required qualifications

• Senior-level, hands-on experience building backend services and designing, developing, and integrating APIs.
• Strong practical experience with AWS, including building backend services in an AWS environment.
• Experience with AWS Lambda and Infrastructure as Code; familiarity with AWS CDK is expected.
• Experience integrating third-party APIs and connecting external services to internal systems or infrastructure.
• Working knowledge of Python and/or TypeScript.
• Ability to understand an existing architecture and build components that fit into it.
• Experience using AI-assisted development tools in a practical engineering workflow.
• Strong written and verbal English communication skills (C1 level).
• Ability to work independently, manage ambiguity, ask questions early, and take responsibility for delivering high-quality work.
• Experience applying the AWS Well-Architected Framework in production systems

Nice to have

• Experience with payroll platforms, payroll systems, or payroll integrations; familiarity with Finch is a plus.
• Experience with banking, payment processing, money movement, financial infrastructure, ledgers, or reconciliation; familiarity with Modern Treasury is a plus.
• Knowledge of identity and authentication protocols such as OIDC or SAML 2.0.
• Experience with AWS CodePipeline or other CI/CD workflows, GitHub, and application monitoring tools such as Sentry.
• Familiarity with React or experience supporting frontend portals and dashboards.
• Hands-on experience with Claude Code, Claude, or similar AI-assisted engineering tools.

About the company

devsavant is looking for a Senior Software Engineer to help build and evolve a payroll giving platform from the ground up.