Senior Software Engineer

Here at Appian, our values of Intensity and Excellence define who we are. We set high standards and live up to them, ensuring that everything we do is done with care and quality. We approach every challenge with ambition and commitment, holding ourselves and each other accountable to achieve the best results. When you join Appian, you’ll be part of a passionate team dedicated to accomplishing hard things, together. Senior Software Engineer McLean,VA | Work Model: On-site Architect and construct high-performance, resilient platform features that power mission-critical enterprise operations at unprecedented scale. ABOUT THE TEAM As a Senior Software Engineer on the Appian platform team, you will ensure our AI-Powered Process Automation platform remains fast, scalable, and capable of handling whatever complex workflows our global customers configure. Your team owns the full technical spectrum from the high-performance data layer through the cross-platform user interface to the design tools that enable rapid application creation. You will solve problems of scale and flexibility that most engineers never encounter, building enterprise-grade solutions that serve customers in ways you never imagined. THE OPPORTUNITY Appian is transforming how the world's largest organizations automate their most critical business processes, and our platform must evolve to meet exponentially growing demands for speed, scale, and intelligence. This role puts you at the heart of that evolution, where your architectural decisions and code directly impact Fortune 500 companies running their mission-critical operations on our platform. You will tackle technical challenges that push the boundaries of distributed systems, performance optimization, and enterprise resilience. WHAT YOU'LL DO • Architect and construct high-performance, resilient platform features, robust APIs, and shared frameworks to power mission-critical operations. • Leverage advanced knowledge of data structures and algorithms to optimize platform performance, reducing latency and improving throughput for mission-critical customer workflows • Design and implement robust REST APIs that power integrations across complex enterprise ecosystems, ensuring reliability and performance under high-volume production loads • Execute technical spikes to clear architectural runways, ensuring system stability, modularity, and seamless long-term scalability. • Partner with product and engineering teams to translate customer requirements into elegant technical solutions that balance flexibility with performance • Execute comprehensive code reviews and establish engineering best practices that elevate code quality and system reliability across the platform • Lead technical investigations into performance bottlenecks and scalability challenges, implementing solutions that future-proof the platform for exponential growth • Elevate engineering standards by leading rigorous code reviews, driving proactive, refactoring, and optimizing low-latency performance. • Provide technical leadership and mentorship to junior and mid-level engineers, fostering engineering excellence and operational accountability.fostering engineering excellence and operational accountability. • Hands-on experience leveraging AI tools to enhance productivity and efficiency. REQUIRED QUALIFICATIONS • Bachelors degree in Computer Science, Software Engineering, or related technical field • 6+ years of professional software development experience building enterprise-scale applications • Expert-level proficiency in Java programming and object-oriented design principles • Deep understanding of data structures, algorithms, and their practical application in solving complex performance challenges • Proven experience designing and