Senior Backend Engineer (Java/Spring) (REMOTE U.S.)
Designs, builds, and operates Java/Spring Boot backend services for MarketTime's multi-tenant B2B ecommerce SaaS platform — REST APIs, MySQL data modeling, and AWS infrastructure — while mentoring engineers, driving best practices, and keeping systems secure and PCI DSS compliant. Fully remote, U.S.-based.
- Compensation
- Not disclosed
- Location
- United States
- Work setup
- Remote
- Seniority
- Senior
- Employment
- Not specified
- Experience
- Not specified
- Category
- Backend
- Posted
Skills
Must have
- Operated as a senior engineer or technical lead on Java backend applications
- Strong expertise with Spring Boot 3+ and the broader Spring ecosystem
- Strong proficiency with modern Java; new development targets Java 25
- Clean, idiomatic Java using modern language features (streams, lambdas, Optional, records, pattern matching)
- Experience with Hibernate/JPA or jOOQ
- Hands-on experience building and operating production workloads on AWS
- Proven ability to design and build RESTful APIs
- Strong SQL skills with MySQL or PostgreSQL
- Working knowledge of asynchronous messaging systems (SQS, RabbitMQ, ActiveMQ)
- Experience building and deploying containerized applications
- Experience with GitHub Actions or other modern CI/CD platforms
- Hands-on use of AI coding tools in professional work, with judgment on verifying output and protecting sensitive data
- Solid understanding of software design principles and distributed systems
- Excellent communication, collaboration, and problem-solving skills
- Track record of mentoring engineers and leading technical initiatives
- Self-motivated and effective working in a remote-first environment
Nice to have
- Experience building and operating multi-tenant SaaS applications
- Familiarity with Infrastructure as Code using Terraform and GitOps practices
- Hands-on experience with AWS services (VPCs, ALBs, EC2, ECS, SQS, S3)
- Working knowledge of React or Angular
- Understanding of payment processing systems, PCI DSS, and security best practices
- Background in ecommerce, fintech, or payment processing
- Familiarity with API security concepts (OAuth 2.0, JWT, authentication, authorization, rate limiting)
- Experience with test-driven development (TDD) and modern testing frameworks
- Experience establishing team practices for AI-assisted development (shared conventions, review standards, data guardrails)
- Exposure to C#/.NET
Full description
Remote Position
About Us
We are a growing B2B ecommerce SaaS company helping businesses sell smarter and faster. Our multi-tenant platform powers enterprise customers across multiple industries, processing sensitive financial data—including credit card payments—while maintaining rigorous PCIDSS compliance.
Built on a scalable cloud-native architecture with robust public APIs and a MySQL-backed data platform, we deliver secure, reliable, and high-performance commerce solutions that our customers depend on every day.
We're a fully distributed engineering team that values ownership, collaboration, continuous improvement, and building software the right way.
About the Role
We're looking for a Senior Backend Engineer (Java/Spring) to help design, build, and evolve our ecommerce platform. You'll work closely with Product and other engineers to solve complex technical problems, shape the architecture of our platform, and deliver secure, scalable solutions for our customers.
Beyond writing code, you'll mentor other engineers, drive engineering best practices, and help ensure our systems remain secure, reliable, and compliant.
Tech Stack
Java 25 • Spring Boot 4 • MySQL • REST APIs • AWS • GitHub Actions • Containers • SQS • Terraform • React
Responsibilities
- Design, develop, deploy, and maintain Spring Boot services powering our SaaS ecommerce platform.
- Design secure, scalable, and highly available solutions that meet PCIDSS and other security requirements.
- Design and build REST APIs that are intuitive, backwards-compatible, secure, and performant.
- Collaborate with Product, QA, and other engineers throughout the software development lifecycle.
- Design and optimize relational database schemas, queries, and data access patterns using MySQL.
- Participate in architectural discussions and help drive technical decisions across the platform.
- Write clean, maintainable, and idiomatic Java using modern language features and engineering best practices.
- Champion engineering best practices including code reviews, automated testing, CI/CD, observability, and documentation.
- Use AI-assisted development tools (e.g., Claude Code, Cursor, GitHub Copilot) to accelerate delivery, while owning the correctness, security, and maintainability of everything you ship.
- Take ownership of features from design through production, including monitoring and operational support.
- Work in small, incremental pull requests with a strong emphasis on code reviews, automated testing, and continuous delivery.