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Modus Create logo
Modus Create

Modus Create is a consulting firm founded in 2011 to help clients transform their businesses to succeed in the digital future. Modus Create employs a fully dist

Principal Back End Engineer

Location

Worldwide

Posted

59 days ago

Salary

0

Seniority

Lead

Job Description

Principal Back End Engineer

Modus Create

Role Description Modus Create is seeking a Principal Java Software Engineer to lead the design and delivery of complex, high-performance backend systems. You'll own greenfield Spring Framework components from architecture through production, setting technical direction for the engineering team while staying hands-on with critical implementation work. This is a role for a deeply experienced Java architect who can navigate ambiguity, mentor engineers, and deliver production-grade systems that handle extreme scale and throughput demands. - Be a technical leader within the Software Engineering team, multiplying your impact through architecture, mentorship, and decisions that shape how we build. - Work alongside experienced engineers who respect technical rigor, challenging decisions and raising architectural concerns with confidence. Qualifications - 10+ years professional Java development with deep, hands-on experience across the full platform stack. - Expert-level knowledge of the Spring Framework ecosystem (Spring Core, Spring Boot, Spring Data, Spring Security, Spring Cloud) with experience architecting large-scale applications using these libraries. - Proven track record designing and building greenfield Spring applications that handle high request volumes and extreme throughput; not just maintenance work, but architecture from the ground up. - JVM expertise: configuration, tuning, garbage collection, memory management, and performance optimization in production systems. - Experience designing and implementing robust API integrations including OAuth 2.0, error handling strategies, retry logic, progressive backoff, and circuit breaker patterns. - Experience creating AI-powered applications, integrating with AI tools and services, or creating or using MCP servers. - Hands-on cloud platform experience—deploying, configuring, troubleshooting, and optimizing applications in production cloud environments. - Demonstrated mentorship of engineers; ability to elevate team technical capability through code review, pairing, and guidance. - Strong collaborative mindset; comfortable operating in flat team structures and advocating for technical decisions without requiring process scaffolding. - Experienced using AI-assisted coding tools (GitHub Copilot, Claude, etc.) with human-in-the-loop best practices; able to leverage AI for accelerated delivery while maintaining code quality, security, and architectural integrity. - Track record of shipping production systems; able to balance architectural ideals with delivery constraints and business timeline. Requirements - Design and architect complex Spring Framework components for greenfield systems; make trade-off decisions balancing performance, maintainability, scalability, and time-to-delivery. - Own end-to-end delivery of critical backend features, including implementation, testing, performance validation, and production support. - Research and evaluate emerging Java and Spring Framework technologies; prototype new patterns and tools and recommend adoption when justified. - Implement best practices for high-load systems: API gateway patterns, resilient integrations, efficient database access, caching strategies, and observability. - Conduct technical design reviews with engineering peers; identify architectural risks and propose solutions. - Mentor engineers through code review, pair programming, and technical guidance; model problem-solving approaches and engineering discipline. - Contribute to team standards: code quality, testing practices, deployment patterns, documentation; lead by example rather than policy. Benefits - Architecting systems that scale; owning the decisions that let an application handle 10x load without falling over. - Solving hard problems in Spring and the JVM; diving deep into performance bottlenecks, concurrency issues, and integration challenges. - Mentoring engineers and watching them grow; knowing that your guidance directly improved their capabilities and career trajectory. - Building clean, maintainable code that teams will want to own and evolve; seeing your architectural choices simplify future work. - Exploring emerging technologies (Spring AI, MCP servers, new JVM runtimes) and deciding when they're worth adopting versus when they're noise. What Success Looks Like - You've shipped at least one greenfield Spring application that handles production traffic at significant scale (hundreds of requests per second, petabyte-class data volumes, or equivalent complexity). - Engineers on your team can articulate the architectural decisions behind the systems you've built and why those decisions were made. - Your code reviews result in better code and better engineers; reviewees understand not just what to change, but why. - Your team ships faster and with higher confidence because they have clearer architectural patterns and fewer re-do cycles. - You've successfully integrated third-party APIs at scale; your error handling and resilience patterns have proven themselves under real failure conditions.

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