Senior Software Engineer

Summary

Join Juniper Square's AI Initiatives team as a Senior Software Engineer and take a leadership role in shaping, designing, and building intelligent agents and AI systems. Collaborate with engineers, product managers, designers, and data teams to deliver AI-native capabilities. Own significant parts of the AI solution architecture, drive key technical decisions, and mentor teammates. Balance hands-on implementation with technical leadership, ensuring robust, scalable, and impactful AI features. Juniper Square offers various work arrangements, from fully remote to working in physical offices. The company invests heavily in digital-first operations, enabling effective collaboration across multiple locations.

Requirements

• Bachelor’s or Master’s degree in Computer Science or a related field; equivalent practical experience considered
• 5+ years of software engineering experience, with at least 2+ years building and deploying AI/ML solutions in production
• Strong expertise with LLMs, natural language processing, prompt engineering, vector search, and Retrieval-Augmented Generation (RAG) techniques
• Proven ability to architect scalable AI systems and make thoughtful trade-offs between open-source, third-party, and custom-built solutions
• Hands-on experience with modern backend frameworks (e.g., NestJS, FastAPI, Django) and frontend frameworks (e.g., React) to deliver end-to-end AI features
• Proficiency with Python and/or TypeScript; experience with service-oriented and distributed system design
• Strong product sense and ability to translate ambiguous problems into concrete, impactful AI solutions
• Experience mentoring other engineers, conducting code and design reviews, and raising the technical bar for AI-focused teams
• Familiarity with modern AI tooling (e.g.,, vector databases, orchestration frameworks, AI agentic platforms)
• A growth mindset and excitement for working in a fast-paced environment where AI innovation is a top priority

Responsibilities

• Lead and deliver high-impact projects within cross-functional AI squads, architecting and developing AI-native products and capabilities that are core to our AI-first roadmap
• Design and implement robust LLM-based solutions, including conversational AI agents, multi-agent orchestration, advanced RAG pipelines, and custom model workflows
• Partner with product and design to shape requirements into clear technical approaches, providing guidance on feasibility, scope, and trade-offs
• Define and evolve data models, vector indexing strategies, and integration pipelines that power intelligent agents and downstream AI applications
• Drive development of scalable APIs (e.g., GraphQL) and service layers to support AI-powered features, ensuring performance, security, and maintainability
• Build user-facing experiences using modern frontend frameworks (e.g., React), working closely with designers to deliver intuitive AI interactions
• Establish best practices for model evaluation, training workflows, and continuous improvement of AI systems, including automated testing frameworks
• Mentor and support junior engineers in LLM engineering, RAG techniques, prompt design, and AI tool adoption
• Champion experimentation and rapid iteration with emerging AI tools and techniques to maximize team velocity and innovation
• Monitor, diagnose, and resolve production issues for AI features, ensuring reliable and high-quality customer experiences
• Collaborate with stakeholders across engineering, product, and operations to proactively identify opportunities for AI-driven product enhancements
• Contribute to a culture of learning, knowledge sharing, and AI-native development within the broader engineering organization

Benefits

• Health, dental, and vision care for you and your family
• Life insurance
• Mental wellness coverage
• Fertility and growing family support
• Flex Time Off in addition to company paid holidays
• Paid family leave, medical leave, and bereavement leave policies
• Retirement saving plans
• Allowance to customize your work and technology setup at home
• Annual professional development stipend