Lumin Digital is a cloud-native, AI-accelerated unified digital banking platform that serves banks and credit unions to drive user growth, engagement, retention, and revenue.
The Senior Software Implementation Engineer plays a key role in the successful technical delivery of Lumin Digital’s digital banking platform. Acting as both a solutions engineer and technical consultant, this role is responsible for implementing platform features, supporting data conversions, and working directly with clients from implementation kickoff through production launch. The Senior Engineer gathers requirements, scopes and develops custom solutions using the company’s SDK, and supports platform operations throughout the implementation lifecycle. This individual also contributes to internal documentation, best practice improvements, and team knowledge sharing while ensuring client satisfaction and a seamless technical onboarding experience. Essential Functions and Responsibilities: Lead full-cycle technical implementations of the Lumin Digital banking platform for new clients, from initial kickoff and requirements discovery through configuration, testing, and production launch. Serve as the primary technical point of contact for client stakeholders, translating business requirements into technical specifications and implementation plans. Implement and configure Lumin Digital’s banking product components, including digital banking, mobile, and online banking modules according to client specifications. Performing testing and validations of each product feature, third party integrations, and custom solutions implemented during the life cycle of the project. Ensure client expectations are satisfied on the committed deliverables. Manage client environments across, staging, pilot and production to support iterative testing and a smooth go-live transition. Conduct working sessions to help clients understand product functionality and to enable client teams to self-manage their application. Develop and document custom solutions and integrations leveraging Lumin Digital’s SDK,APIs and available tooling to meet client-specific requirements. Create and maintain project scope implementation details, data flow documentation, and integration specifications for each implementation. Partner with Product, Engineering, Services, and Support teams to coordinate deliverables, resolve dependencies, and maintain alignment throughout the implementation lifecycle. Communicate implementation status, risks, blockers, and milestones clearly to internal stakeholders, project managers, and client team. Support data conversion and migration efforts associated with Projects. Support load testing efforts and help fine tune any performance issues. Proactively identify technical risks, implementation blockers, and timeline threats; develop and execute mitigation strategies to keep projects on track. Troubleshoot and resolve technical issues across all phases of implementation, including root cause analysis, integration failures, environment issues, and post-launch incidents. Identify opportunities to improve implementation methodologies, tooling, templates, and reusable components. Lead adoption of best practices across the technical delivery team. Collaborate cross-functionally with Engineering, Product, Services, and Support teams to ensure cohesive delivery and rapid resolution of issues. Provide post-launch support and contribute to Tier 2/Tier 3 production support for live clients until the project is handed off to application support. Continuously evaluate and improve implementation processes, reusable templates, and team best practices to increase delivery quality and efficiency. Contribute to post-implementation retrospectives to capture lessons learned and drive continuous improvement in the delivery process. Perform other duties as assigned Position Specifications Education: Bachelor’s degree in Computer Science, Engineering, or a related technical field, or an equivalent combination of education and experience. Experience: 5+ years of experience in software engineering, technical implementation, or systems integration roles. Proven experience in digital banking, FinTech, or other regulated enterprise software environments. Strong hands-on experience with SQL and relational databases for configuration and data migration. Proficiency with JIRA or similar Agile project management tools. Knowledge, Skills, & Abilities: Advanced experience implementing or developing digital banking or financial services software products. Experience with SDK or equivalent experience with financial technology platforms. Knowledge of core banking system integrations (e.g., Fiserv, Jack Henry, FIS, Symitar) and standard data exchange formats (JSON, XML, REST, SOAP). Familiar with cloud-native technologies including AWS, Docker, Kubernetes, and observability tools such as Kibana or Datadog. Understanding of microservices architecture and RESTful API design principles. Working knowledge with relational databases and SQL for data validation, mapping, and troubleshooting. Familiarity with software development practices including version control (Git), CI/CD pipelines, and deployment automation. Experience with JIRA or comparable agile project management tools for tracking tasks, issues, and milestones. Excellent verbal and written communication skills; able to translate complex technical concepts for non-technical stakeholders. Proven ability to build strong client relationships and act as a credible technical authority. Collaborative team player who thrives in a fast-paced, cross-functional environment with ambiguity and change. Strong analytical and critical thinking skills with a proactive approach to problem solving. Demonstrated ability to lead, mentor, and influence peers and junior team members. Travel: Minimal, generally 12 days or less per year, ~2X team get togethers a year Where the Role can Grow: 30 Days: Gain a thorough understanding of the Lumin Digital platform, SDK, and implementation processes. Begin assisting with client implementations and resolving technical issues. 90 Days: Take ownership of key