Senior Backend Developer

Summary

Join CapIntel's growing Data Team as a Senior Backend Developer and play a critical role in shaping the infrastructure of our wealthtech platform. Lead the design and development of scalable, high-performance backend systems, focusing on data architecture, system reliability, and API integrations. Collaborate with product managers, data analysts, and engineers to ensure platform efficiency, security, and future-proofing. Build and maintain robust backend services using JavaScript/TypeScript, Node.js, and NoSQL databases. Architect data pipelines and storage solutions for financial data, ensuring performance and scalability. Lead the development of secure API integrations with third-party providers and internal teams. Deploy, monitor, and optimize services on AWS, applying best practices. Mentor intermediate developers and contribute to evolving backend development standards.

Requirements

• Extensive backend development experience, particularly with Node.js and TypeScript, and a deep understanding of system design principles
• Proven experience with MongoDB (or similar NoSQL databases) and a strong grasp of data modeling and query optimization
• Experience building and maintaining public-facing and internal APIs, with an emphasis on performance, security, and monitoring
• Strong background in cloud infrastructure, ideally with AWS services such as Lambda, S3, ECS, and CloudWatch
• Comfortable with CI/CD workflows, infrastructure as code, and optimizing deployment processes
• A track record of writing well-tested, reliable code and championing engineering best practices
• Excellent collaboration and communication skills—you know how to bridge the gap between technical and non-technical stakeholders

Responsibilities

• Design, build, and maintain robust and scalable backend services using JavaScript/TypeScript, Node.js, and NoSQL databases such as MongoDB
• Architect data pipelines and storage solutions for structured and unstructured financial data, ensuring performance, reliability, and scalability
• Lead the development of secure, enterprise-grade API integrations, partnering with third-party data providers and internal teams
• Deploy, monitor, and optimize services on AWS, applying best practices for observability, cost efficiency, and fault tolerance
• Drive technical excellence by writing clean, maintainable code supported by thorough unit and integration testing
• Participate in and elevate code reviews, architecture discussions, and technical planning, setting a high bar for engineering quality
• Mentor intermediate developers and contribute to the evolution of our backend development standards and processes
• Partner closely with product, data, and design teams to translate business requirements into scalable backend solutions

Preferred Qualifications

• Experience with Python for backend scripting or data processing
• Familiarity with serverless architectures (e.g., AWS Lambda)
• Knowledge of search indexing technologies such as Elasticsearch
• Exposure to data warehousing, analytics pipelines, or financial data normalization