Senior Software Engineer

We are seeking a Senior Software Engineer to join our dynamic engineering team focused on evolving our billing and payments platform . This role is ideal for engineers who are passionate about building scalable systems using modern cloud technologies and who want to make a direct impact on product capabilities and customer satisfaction. Key Responsibilities: Design, develop, and maintain Java Spring Boot applications for billing, payments, taxation, and more. Build microservices on AWS (S3, Lambda, RDS, Aurora) and deploy with Kubernetes . Participate in all phases of the software development lifecycle from design and development to deployment, maintenance, and support. Troubleshoot and resolve production issues , and contribute to proof-of-concept (PoC) implementations. Collaborate cross-functionally with product, design, QA, and other engineering teams. Contribute to technical decisions, code reviews, and team best practices. Work independently with minimal supervision while delivering high-quality code. Qualifications: Education & Experience: Bachelor's degree in Computer Science or related technical discipline, or equivalent practical experience. 5+ years of professional full-stack development experience, with a strong emphasis on billing, payments, and customer account systems. Hands-on experience with PCI-compliant payment gateway integrations (e.g., Stripe, PayPal, Plaid, Adyen, Cybersource). Technical Skills: Strong proficiency in Java, Spring, Spring Boot . Experience developing microservices in cloud environments (AWS, Lambda, S3, Kubernetes) . Familiar with both relational databases (MySQL, DB2, Oracle) and NoSQL databases . Strong understanding of unit testing, TDD , and code quality standards. Familiarity with CI/CD pipelines , build tools ( Jenkins, Maven, Gradle ), and DevOps workflows. Experience with monitoring/logging tools: Splunk, New Relic, Datadog, ELK Stack, CloudWatch . Bonus: Front-end experience with React , JavaScript/TypeScript , GraphQL , Backbone , or Marionette . Experience integrating with sales tax engines is a plus. Cultural Fit & Soft Skills: Strong verbal and written communication skills. A flexible, collaborative mindset with a willingness to work across multiple teams and priorities. Strategic thinker who enjoys problem-solving in a dynamic product environment. Desire to learn, mentor, and contribute to a supportive engineering culture. Tech Stack at Constant Contact: Backend: Java, Spring Boot, AWS, Kubernetes Frontend: React, JavaScript/TypeScript, Swift, Kotlin CI/CD: GitOps, Jenkins, Maven/Gradle Observability: Splunk, Datadog, CloudWatch Integrations: Stripe, Plaid, PayPal, Adyen, Cybersource