Perseus Group, Constellation Software

Compensation

Full Description

Senior Software Developer Overview: Constellation1 is a leading provider of integrated technology, media, and data solutions to real estate franchisors, brokerages, agents, and MLS organizations and associations. Our mission is clear: innovate in real estate. We don’t just build technology, we partner with clients to identify problems, design solutions, and unlock opportunities that transform the industry. The Position: We are seeking a Senior Software Developer to help build and evolve our products, used by real estate organizations across North America. You’ll design and deliver cloud-native services, leverage data and AI to create intelligent experiences, and help raise the bar for reliability, scalability, and developer experience. Our ideal candidate is a pragmatic engineer who values clarity over complexity, automates relentlessly, measures impact, and thrives in cross-disciplinary collaboration. You’re comfortable mentoring teammates and bring a solutions-first mindset to every challenge. Job Responsibilities: Design & deliver cloud-native applications using modern patterns (serverless, event-driven, containerized) with a focus on scalability, resilience, and cost efficiency. Own the full stack: React + TypeScript on the front end; .NET (C#) and/or Node.js/TypeScript on the back end; SQL as a primary store, augmented by NoSQL where it fits. Build robust APIs (REST/JSON; GraphQL a plus), integrating with internal, third-party, and AI-powered services securely and efficiently. Craft intuitive, performant, and accessible UIs using modern web frameworks, ensuring responsive design across devices and optimizing for SEO and usability. Apply Infrastructure as Code (IaC) to define, provision, and evolve cloud infrastructure. CI/CD & release engineering: automate build/test/deploy with modern pipelines; Security by default: embed security best practices across the SDLC. AI & Data Integration: work with data pipelines, AI/ML APIs, and analytics tooling to enrich applications with intelligent search, personalization, and automation. Mentor & lead: guide code reviews, pair program, evolve standards, and coach developers on cloud patterns, AI integration, and clean architecture. Collaborate with Product and Design to turn ambiguous requirements into clear, testable, high-impact deliverables. Writing clean, well-documented code that adheres to team standards and best practices Take ownership of coding assignments with minimal supervision required Required Qualifications and Skills: 6+ years building and operating production web applications at scale. 3+ years hands-on with cloud-native development in production. Strong proficiency in C#/.NET and/or TypeScript/Node.js for backend services. Strong experience with SQL (schema design, performance tuning, query optimization) and familiarity with NoSQL patterns where appropriate. Front-end experience with modern web UI frameworks (React preferred), delivering responsive, accessible UIs. Experience with IaC and automated CI/CD pipelines. Solid grasp of distributed systems concepts: idempotency, retries/backoff, eventual consistency, partitioning, caching. Excellent communication; able to simplify complex trade-offs and lead design reviews. Strong ability to solve complex problems independently Experience working in an Agile/Scrum environment Nice To Have .NET 8 + ASP.NET Core, minimal APIs, and background services. Next.js or similar (SSR/ISR) and web performance/SEO fundamentals. Experience integrating search and recommendation systems (OpenSearch, Elasticsearch, or AI-based search). Experience with data streaming, CDC patterns, and real-time event processing. Experience with AI/ML APIs (e.g., NLP, recommendation engines, generative AI for content automation). Multi-tenant SaaS experience with SSO, feature flagging, and tenant isolation. FLSA Designation (US Only): Exempt Salary Range (US Only): The estimated base salary range for this role in the United States is $120,000.00 - $180,000.00 per year. For compliance with local legislation, and to provide greater transparency to applicants, we share salary ranges on all job postings regardless of the desired hiring location or whether the position is remote. The posted range is an estimate and reflects many factors which are subject to change. Final offer amounts may vary from the amounts listed above, based upon geographic location, candidate experience and expertise, and other relevant factors. Other Compensation (US Only): This role will also be eligible for participation in a Company profit sharing bonus plan. Plan details will be provided to you upon hire. Benefits (US Only): Full time employees will also be eligible for enrollment in a wide range of choices of benefits , including medical, dental, vision, basic life insurance, short/long term disability, 401(k) participation (with company match). Time off (US Only): The Company provides a minimum of 10 days of vacation for new employees , sick time based on state requirements, 8 Company-paid holidays and 2 personal holidays per year. We recognize the value and importance of diversity and inclusion in our communities and in the workplace. We celebrate diversity and one of our goals as an employer is to create an inclusive work environment for all employees. We are an equal opportunity employer and do not discriminate against any employee or applicant because of race, religion, sex, sexual orientation including gender identity or expression, pregnancy, national origin, age, marital status, veteran status, disability status, or any other category or characteristic protected by law. Applicants with disabilities who would like to require a reasonable accommodation related to any part of the application process may contact us at Perseus_HR@constellationhbs.com. NOTE: If an applicant is selected to receive a conditional offer of employment, and in accordance with applicable law, a criminal background check may be conducted before the offer becomes final and employment begins. Pursuant to the San Francisco Fair Chance Ordinance, and other applicable laws, we will consider for employment qualified applicants with arrest and conviction records. #LI-MA1 #Market Leader Perseus, an operating group of Constellation Software Inc., acquires independently managed software companies around the world. It provides them with the strategic guidance and financial security they need to become leaders within their respective markets. Perseus Group is an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran, or disability status. "We seek out vertical market software businesses where motivated small teams composed of good people, can produce superior results in tiny markets. What we offer our business unit managers is autonomy, an environment that supports them in mastering vertical market software management skills, and the chance to build an enduring and competent team in a ‘human-scale’ business" Mark Leonard President, Constellation Software Inc. Be wary of any Perseus Group job posting that is not also listed on this site. If you have any doubt as to the authenticity of a particular job posting, please contact our Perseus HR team at perseus_hr@constellationhbs.com