Principal Full Stack Engineer (Back End)

Role Overview

Kelaca is partnering with a fast-scaling technology innovator based in Raleigh, NC to find a Senior/Principal Full Stack Engineer – Back-End ready to architect, build, and scale high-performance enterprise software.

Our client powers mission-critical operations for asset-intensive industries. This role is designed for an engineer who thrives on ownership, deep technical problem-solving, and collaboration across systems.

You’ll be a senior contributor and trusted technical voice within the engineering group, driving design and implementation across C#/.NET, REST APIs, and supporting full-stack capabilities with React.

You’ll own a product line’s technical integrity, shaping architecture, improving performance, and mentoring teammates while remaining hands-on in code.

What Success Looks Like

30–90 Days

·        Develop deep understanding of architecture, development patterns, core frameworks, and CI/CD pipelines.

·        Familiarization with technical challenges (architecture and theories on solutions)

·        Assess, evaluate, modify, and implement solutions (familiar with code base)

·        Build trust across engineering, QA, and product partners.

·        Begin contributing production-ready code across front-end and full-stack surfaces.

·        Learning, listening and evaluating team structure (0-45 days).

·        Implementing leadership techniques to take on more ownership of products (45-90 days).

90–180 Days

·        Lead end-to-end development of new features or enhancements within your product area.

·        Strengthen observability, performance monitoring, and database efficiency.

·        Provide technical guidance to mid/junior developers on implementation of features.

·        Raise engineering bar through mentorship and process improvements.

·        Drive improvements in test coverage, accessibility, and user experience consistency.

12 Months

·        Serve as back-end owner for a major product line.

·        Deliver predictable, scalable releases and measurable reliability gains.

·        Shape architecture strategy for new services and API design.

·        Champion operational excellence — CI/CD maturity, testing depth, uptime reliability.

Core Outcomes & Metrics

·        Reliability: Reduced downtime, faster incident recovery, improved observability.

·        Performance: Optimized APIs and database queries; measurable latency reduction.

·        Delivery Predictability: On-time releases, stable sprint throughput.

·        Code Quality: Consistent standards, maintainable modules, effective peer reviews.

What You’ll Do

·        Design and implement robust services and APIs using C#/.NET.

·        Architect data access and storage layers (SQL Server, PostgreSQL).

·        Collaborate with front-end engineers to deliver seamless full-stack solutions.

·        Own CI/CD pipelines, testing frameworks, and release automation.

·        Lead technical deep-dives, troubleshoot performance issues, and resolve production bottlenecks.

·        Contribute to architectural roadmaps, balancing new development with system health.

·        Coach peers on patterns, code reviews, and modern engineering practices.

How You Work

·        You own problems end-to-end and bring structure to complexity.

·        You lead through clarity and craft — not title.

·        You communicate precisely and influence across teams.

·        You thrive in environments that demand reliability and reward curiosity.

·        You treat technical debt as a design challenge, not a burden.

Skills, Experience, and Tools That Matter

Minimum Qualifications

·        Bachelor’s in Computer Science or related field (or equivalent experience).

·        7–10+ years of professional software development experience.

·        Deep expertise in C#/.NET, REST API design, and SQL Server/PostgreSQL.

·        Solid grounding in object-oriented design and design patterns.

·        Strong debugging, profiling, and performance-tuning skills.

·        Familiarity with CI/CD, automated testing, and containerization tools (Docker/Kubernetes).

·        Experience mentoring engineers and guiding technical delivery.

Preferred Qualifications

·        Exposure to React or modern front-end frameworks.

·        Experience with Azure, microservices, and distributed system design.

Familiarity with ERP or industrial integrations is a plus.