• Develop and implement back-end solutions using Java and/or Kotlin • Take full ownership of the software development lifecycle • Identify opportunities to improve existing applications • Actively participate in technical decision-making • Ensure code quality through practices such as Code Review and Pair Programming • Explore and apply relevant new technologies • Maintain clear and up-to-date technical documentation

• Develop software solutions for complex problems using C# (.NET) and SQL Server • Design deliverables that are fully aligned with the product’s overall architecture, ensuring ecosystem integrity • Perform evolutionary and corrective maintenance on legacy systems • Execute automated tests (unit tests, TDD, BDD) and ensure code quality • Be proactive and thorough in team code reviews • Configure, create and monitor monitoring tools and alerts • Take responsibility for failures that fall within the team’s domain • Use operational data to suggest stability improvements and support post-mortem analyses • Be disciplined in making realistic commitments and delivering value incrementally • Act proactively to resolve blockers and delays before escalation is required • Collaborate actively with multidisciplinary teams, maintaining clear, concise, audience-oriented communication • Help teammates overcome obstacles and complete tasks • Take ownership of your career and your Individual Development Plan (IDP) • Seek and apply feedback continuously • Share knowledge and support the development of junior developers

Role Description SmartCommerce is looking for a Senior Software Backend Engineer to design, build, and maintain scalable backend systems spanning database architecture, middle-tier services, and data processing/ETL pipelines that power our commerce platform and client integrations. This role combines deep backend engineering with hands-on data engineering and stream processing responsibility, and serves as a senior technical contributor and production support owner for the systems they build. Responsibilities - Design, develop, and maintain backend services and APIs using PHP, Node.js, and React.js across the middle tier - Design and optimize database schemas and queries in MySQL, and implement caching strategies using Redis - Build and maintain ETL and data pipelines using Airflow, working with Parquet-formatted data feeding into Redshift and Databricks - Design and implement stream processing solutions using Kafka - Architect and operate scalable, high-availability systems deployed on AWS - Provide production support and participate in an on-call rotation as needed - Collaborate with cross-functional partners in Product, Data, and QA to translate requirements into technical solutions - Write clean, tested, well-documented code and actively participate in code reviews - Leverage AI coding tools (Claude, Cursor, Codex, Gemini, etc.) to accelerate development and improve code quality - Mentor other engineers on backend and data engineering best practices Qualifications - Bachelor's degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience - 8+ years of professional software engineering experience, with a strong focus on backend, database, and data processing systems - Strong proficiency in PHP, Node.js, and React.js - Deep experience with MySQL database design, optimization, and administration - Experience with Redis for caching and in-memory data structures - Hands-on experience with Kafka for stream processing and event-driven architectures - ETL/data pipeline experience using Airflow and Parquet file formats - Experience with AWS cloud infrastructure - Proficiency with AI coding tools (Claude, Cursor, Codex, Gemini, etc.) - Nice to Have: Experience with Apache Spark, Python, and Databricks - Nice to Have: Experience with real-time stream processing frameworks - Eligibility to work in the United States without sponsorship - Ability to pass background check Requirements - Remote - from home office with occasional travel as needed. Must be located within the United States; Eastern US preferred. Benefits - Health Care Plans (Medical, Dental & Vision) - Retirement Plan (401k, Profit Sharing) - Life Insurance (Basic, Voluntary & AD&D) - Long-Term Disability - Short-Term Disability - Flexible Paid Time Off (Vacation, Sick & Public Holidays) - Family Leave (Maternity, Paternity) - Work From Home/Remote - Wellness Resources

• Design PostgreSQL schemas, indexes, and queries for high-write workloads • Build, operate, and harden AWS infrastructure using Terraform • Design, build, and scale backend services in Python/FastAPI • Own REST/OpenAPI contracts