Senior Software Developer III – AWS

This is a fully remote position, open to applicants in Colombia.

📋 Description

• Develop architecture, prototypes, and design proposals that align with the product and platform vision.

• Shape technical direction through architecture reviews, RFCs, design discussions, and hands-on collaboration.

• Establish and implement product/platform architecture roadmaps in collaboration with senior developers, architects, and tech leads.

• Balance the speed of delivery, quality, maintainability, and the long-term health of the platform.

• Decompose large initiatives into parallelizable tasks that provide incremental business value.

• Advocate for proposals throughout design, development, and production implementation phases.

• Enhance the core product build, CI/CD pipelines, and the software development lifecycle (SDLC).

• Address production issues and promote reliability, observability, monitoring, and incident response.

• Keep technical documentation up to date.

• Facilitate design discussions across various teams.

• Represent the team in interactions with technical and cross-functional stakeholders.

• Serve as a trusted technical leader through collaboration, influence, and shared ownership.

• Mentor developers through design reviews, collaborative sessions, and constructive feedback.

• Disseminate knowledge of technologies and industry best practices.

• Assess emerging technologies, frameworks, and cloud capabilities.

• Construct and manage the AWS AgentCore Gateway layer and hosted capabilities.

• Develop and sustain a target registry and configuration model for customer MCP servers, covering tenant isolation, credential management, allowlisting, egress control, and failure containment.

• Create inbound MCP and adjacent protocol interfaces with authentication, scope enforcement, and rate limiting.

• Build and manage on-premise connectivity with session lifecycle, request correlation, and recovery mechanisms.

• Implement session and scope propagation across gateways, targets, and backends.

• Design and refine OpenAPI contracts and target runtimes.

• Execute outbound authorization using IAM/SigV4, OAuth, and credential providers.

• Maintain versions of target contracts.

• Contribute to end-to-end tracing, service level objectives (SLOs), and observability practices.

• Mentor developers and contribute to the technical direction of the integration layer through RFCs and design reviews.

• Utilize AI-assisted development tools as part of the daily workflow.

• Evaluate, secure, and assume responsibility for AI-generated outputs.

• Identify and spearhead opportunities for agentic automation.

• Guide developers on the responsible use of AI tools.

• Set up guardrails for the safe usage of AI tools.

• Create feedback loops to enhance the team's utilization of AI tooling.

⛳️ Requirements

• Bachelor's degree in Computer Science, Software Engineering, or equivalent practical experience.

• Over 8 years of professional software development experience with a proven impact beyond a single team.

• Expertise in designing and operating distributed, cloud-native, SaaS/multi-tenant platforms at scale, preferably on AWS.

• Strong software development fundamentals, including OOP, design patterns, SOLID principles, and advocacy for code quality.

• Experience in agentic-AI software development methodologies.

• Knowledge of designing and utilizing HTTP APIs such as REST or GraphQL.

• Proven experience mentoring developers and influencing architectural decisions across teams.

• Excellent written and verbal communication skills.

• Proficiency in English at a high B2 level.

• Strong initiative to enhance processes, tools, methodologies, and product quality.

• Familiarity with MCP (Model Context Protocol) for LLM agents.

• Background in building or managing a multi-tenant gateway or API platform.

• Experience integrating with third-party or untrusted endpoints.

• Knowledge of authorization and scope propagation across multi-hop service boundaries.

• Experience in designing and operating persistent-connection or streaming architectures, including session management, recovery, message correlation, timeout/retry semantics, backpressure, idempotency, and graceful degradation.

• Proficiency in Node.js/TypeScript.

• Familiarity with AWS Lambda, AWS Bedrock, AWS AgentCore Gateway, or similar environments.

• Knowledge of OpenAPI, Model Context Protocol (MCP), and A2UI.

• Experience with GitHub and GitHub Actions.

🏝️ Benefits

• Indefinite term contract with all legal benefits.

• Prepaid medical coverage.

• Life insurance and funeral assistance.

• Internet allowance.

• Home office stipend.

• Competitive compensation — above the market average.

• Fully remote work environment and an excellent work-life balance.

• Opportunity to work for a growing global SaaS leader company.

• A culture that encourages independence, innovation, trust, and accountability.

• Open space for creativity, innovation, and future strategizing.

• Mentorship from highly experienced professionals.

• Budget allocated for training.

• 5 Personal Time Off days per year.

• Sick Leave Top-up to ensure 100% of salary is paid by the employer from Day 3 to Day 90.

• Recognition Award, offering additional paid time off in acknowledgment of the corresponding year of service.

• Vacation upgrade starting at 5 years of service.

• AI-first work environment.