Principal Software Engineer

Join a highly technical team where you'll lead the creation of responsive web and mobile applications using modern frameworks like Angular and Ionic. In this role, you'll shape architecture, mentor engineers, collaborate across UX, product, and backend teams, and drive best‑in‑class performance, accessibility, and design. You'll also influence technology direction through research and prototyping, build .NET APIs, and deliver high‑quality software through Azure‑powered CI/CD pipelines. This Hybrid role requires 3 days of in-person work per week at our Newton, MA headquarters. Essential responsibilities Lead the design and development of modern, responsive web and mobile applications using Angular, Ionic, Knockout.js, and standard JavaScript/CSS. Collaborate closely with UX/UI designers, product managers, and backend engineers to deliver seamless user experiences. Champion best practices in front‑end performance, accessibility, and responsive design. Be part of a fast‑paced, highly technical development team responsible for developing and delivering SaaS solutions. Serve as a lead in the design and development of software systems and subsystems. Work within the software team and across other lines of business to determine the proper approach to software development challenges. Research and recommend new technologies and approaches. Learn and prototype. Make recommendations based on upcoming product and project roadmaps. Conduct design and code reviews and provide feedback on engineering best practices. Mentor and support fellow engineers through thoughtful code reviews, architectural discussions, and technical design sessions. Participate in all phases of SDLC: from system analysis to technical design and development and test to deployment and support. Contribute to backend development using .NET, particularly in designing APIs that support front‑end needs. Leverage Azure services and CI/CD pipelines to deliver high‑quality software efficiently. Minimum Requirements Bachelor's degree in Computer Science or Engineering; or 5 additional years minimum of experience in lieu of applicable degree. 5+ years of professional software development experience. 5+ years of experience with .NET and Azure. Preferred Qualifications Deep expertise in Angular and/or Ionic, JavaScript, HTML5, and CSS3. Experience with Knockout.js and legacy front‑end systems is a plus. Familiarity with .NET technologies. Database development (MS SQL Server) is a strong plus. Web development (Angular, jQuery) is a strong plus. RESTful Web Services. Agile methodologies experience (e.g., Scrum) is a strong plus. Excellent understanding of engineering best practices and software design. Excellent written, documentation, and verbal communication skills and a collaborative mindset. Willing to take on projects and challenges and can be flexible. Demonstrated success meeting and exceeding business objectives. Mobile app development experience, Mobile First, and Responsive Web Design experience is a plus. Strong understanding of responsive design, cross-browser compatibility, and front‑end performance optimization preferred. Experience with MongoDB and NoSQL data modeling is a plus. Agile methodologies (e.g., Scrum) experience preferred. Track record of mentoring engineers and fostering a culture of learning and code quality preferred. The annual salary for this position is between $145,000 – $181,000. The pay range listed here is what Bright Horizons in good faith anticipates offering for this job opening. Actual compensation offers within this range will depend on a variety of factors including experience, education and training, certifications, geography, and other relevant business or organizational factors. At this time, Bright Horizons will not sponsor an applicant for employment authorization/visa for this position. Benefits Medical, dental, and vision insurance Paid vacation, sick, holiday, and parental bonding leave 401(k) retirement plan Long‑term and short‑term disability insurance Life insurance Money‑saving discounts and financial planning tools Tuition assistance and education coaching Caregiving support and resources for the children and adults in your family Learn more at Bright Horizons provides equal opportunity in all aspects of employment and does not discriminate against any individual on the basis of race, color, religion, sex, age, disability, sexual orientation, veteran status, national origin, genetic information, or any other characteristic protected under federal, state, or local law. Bright Horizons complies with the laws and regulations described in the following federal government resources: Know Your Rights, Family and Medical Leave Act (FMLA), and Employee Polygraph Protection Act (EPPA). If you require assistance or a reasonable accommodation in completing these application materials or any aspect of the application and hiring process, please contact the recruitment helpdesk at View phone number on click.appcast.io or View email address on click.appcast.io. Determinations on requests for reasonable accommodation will be made on a case‑by‑case basis. #J-18808-Ljbffr