Lead Software Engineer (Python & React)

Job Description We are seeking an experienced Lead Software Engineer with a strong background in Python and FastAPI to architect, develop, and deliver scalable, maintainable, and high-performance web applications. As a technical leader, you will guide the team in modern engineering practices, data modeling, and production excellence, ensuring robust solutions that meet business needs. Responsibilities Technical Leadership & Project Ownership Lead the design, implementation, and delivery of complex software solutions, ensuring alignment with business requirements and long-term maintainability. Take end-to-end ownership of projects, from initial requirements to deployment and production support. Mentor and guide team members, conducting code reviews and fostering a culture of technical excellence and collaboration. Drive problem-solving efforts, finding simple, effective solutions to complex challenges. Coding & Design Design and develop asynchronous web applications using Python and FastAPI. Apply and enforce SOLID principles, Separation of Concerns, and Dependency Injection (IoC) for modular, testable code. Implement Hexagonal Architecture (Ports & Adapters), and leverage design patterns such as Factory, Repository, and Decorator to ensure clean, scalable solutions. Group and lead best practices in coding standards, code organization, and technical documentation. Data Modeling & Extraction Design and optimize data models and structures based on evolving business requirements. Identify data patterns, perform data extraction, and implement efficient data access and transformation strategies. Collaborate with stakeholders to translate business needs into robust, scalable data solutions. Production Systems & Observability Lead production deployments and ensure high system reliability. Implement observability practices, including custom metrics, logging, monitoring, and alerting. Debug and resolve complex production issues, driving root cause analysis and continuous improvement. Ensure robust exception management and proactive handling of system failures. Collaboration & Communication Work cross-functionally with product managers, designers, and other engineers to deliver impactful technology solutions. Communicate technical concepts clearly to both technical and non-technical stakeholders. Foster a culture of ownership, accountability, and continuous learning within the team. Must Have: Bachelor’s or Master’s degree in Computer Science or related field, or equivalent experience. 6+ years of professional experience in Python web application development, with at least 2 years in a technical leadership or lead engineer role. Advanced proficiency in Python, FastAPI (or similar frameworks), and asynchronous programming. Proven experience in data modeling, designing data structures, and extracting actionable insights from data. Track record of solving complex problems with simple, maintainable solutions while owning project delivery. Demonstrated expertise in microservices & hexagonal architecture, ensuring data consistency across distributed services and applying design patterns such as Factory, Repository, and Decorator. Hands-on experience with relational databases (PostgreSQL, MySQL, etc.) and ORMs. Production experience with deployment, observability (metrics, logging, monitoring), alerting, and debugging. Familiarity with CI/CD pipelines, containerization (Docker/Kubernetes), and cloud platforms (Azure, AWS, GCP). Excellent communication, mentorship, and team leadership skills. Nice to Have: Experience with frontend frameworks (React, Angular). Familiarity with event-driven and distributed systems. Experience with advanced analytics, machine learning, or big data processing. Exposure to modern observability tools (Prometheus, Grafana, Datadog, etc.). Who You Are A technical leader passionate about engineering excellence, data-driven solutions, and team success. Skilled at breaking down complex problems and guiding teams toward practical, elegant solutions. Committed to production reliability, observability, and continuous improvement. Effective communicator and mentor, fostering a collaborative and innovative team environment. What you’ll receive: Competitive compensation. Limitless growth and learning opportunities. A collaborative and positive culture - join a diverse team of professionals that are as smart and driven as you. A chance to make an impact – your work will contribute directly to our strategy. Enjoy the flexibility of working from home and the energy of collaborating with peers in our dynamic offices. 20+ PTO days plus holidays and floating holidays in your first year. Extensive medical, dental insurance and vision plan. 401K with corporate match, immediate vesting. Health-and-wellness-related allowance programs. Parental leave. Tuition reimbursement. Employee Stock Purchase Plan. Employee Assistance Program. Gartner Gives Charity Match. And much more! What are we: Action Oriented - Deliver fast, get great results. We embrace the vision, roadmap to success and the action it takes to make it happen. Intellectually Curious - Seek to learn, love to teach. We’re humble and embrace respectful, radical candor with a mindset of ongoing professional and personal development. Collaborative - One team, shared mission. We welcome feedback and understand the value of working together to accomplish more than what is possible individually. #LI-JD6 #LI-Hybrid #LI-Technology Who are we? At Gartner, Inc. (NYSE:IT), we guide the leaders who shape the world. Our mission relies on expert analysis and bold ideas to deliver actionable, objective business and technology insights, helping enterprise leaders and their teams succeed with their mission-critical priorities. Since our founding in 1979, we’ve grown to 20,000 associates globally who support over 13,000 client enterprises in ~90 countries and territories. We do important, interesting and substantive work that matters. That’s why we hire associates with the intellectual curiosity, energy and drive to want to make a difference. The bar is unapologetically high. So is the impact you can have here. What makes Gartner a great place to work? Our vast, virtually untapped market potential offers limitless opportunities – opportunities that may not even exist right now – for you to grow professionally and flourish personally. How far you go is driven by your passion and performance. We hire remarkable people who collaborate and win as a team. Together, our singular, unifying goal is to deliver results for our clients. Our teams are inclusive and composed of individuals from different geographies, cultures, religions, ethnicities, races, genders, sexual orientations, abilities and generations. We invest in great leaders who bring out the best in you and the company, enabling us to multiply our impact and results. This is why, year after year, we are recognized worldwide as a great place to work. Gartner is the world authority on AI At Gartner, you’ll join a company at the very center of the AI revolution. Gartner has proactive, objective guidance throughout clients’ AI journeys. We set the standard for how organizations leverage artificial intelligence to drive meaningful impact. You’ll have access to unmatched resources, expertise, and technology, and play a key role in helping Gartner and our clients innovate and grow as we leverage AI to transform business and technology landscapes. It’s an exciting time to be at Gartner, with limitless opportunities to make a real impact, grow your skills, and build a lasting, meaningful career in a field that’s reshaping the way we operate. If you’re passionate about AI and want to be part of a team that’s guiding the leaders who shape the world, Gartner is the place for you. What do we offer? Gartner offers world-class benefits, highly competitive compensation and disproportionate rewards for top performers. In our hybrid work environment, we provide the flexibility and support for you to thrive — working virtually when it's productive to do so and getting together with colleagues in a vibrant community that is purposeful, engaging and inspiring. Ready to grow your career with Gartner? Join us. Gartner believes in fair and equitable pay. A reasonable estimate of the base salary range for this role is 116,000 USD - 170,000 USD. Please note that actual salaries may vary within the range, or be above or below the range, based on factors including, but not limited to, education, training, experience, professional achievement, business need, and location. In addition to base salary, employees will participate in either an annual bonus plan based on company and individual performance, or a role-based, uncapped sales incentive plan. Our talent acquisition team will provide the specific opportunity on our bonus or incentive programs to eligible candidates. We also offer market leading benefit programs including generous PTO, a 401k match up to $7,200 per year, the opportunity to purchase company stock at a discount, and more. The policy of Gartner is to provide equal employment opportunities to all applicants and employees without regard to race, color, creed, religion, sex, sexual orientation, gender identity, marital status, citizenship status, age, national origin, ancestry, disability, veteran status, or any other legally protected status and to seek to advance the principles of equal employment opportunity. Gartner is committed to being an Equal Opportunity Employer and offers opportunities to all job seekers, including job seekers with disabilities. If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access the Company’s career webpage as a result of your disability. You may request reasonable accommodations by calling Human Resources at View phone number on click.appcast.io or by sending an email to View email address on click.appcast.io. Job Requisition ID:106820 By submitting your information and application, you confirm that you have read and agree to the country or regional recruitment notice linked below applicable to your place of residence. Gartner Applicant Privacy Link: For efficient navigation through the application, please only use the back button within the application, not the back arrow within your browser. At Gartner, we guide the leaders who shape the world. Over 13,000 client enterprises worldwide rely on Gartner for actionable, objective business and technology insights. Our teams of thinkers and doers know that staying curious is the best way to shape the future, for ourselves and our clients. Our sustained success creates limitless opportunities for you to grow professionally and flourish personally. We have a vast, virtually untapped market potential ahead of us, providing you with an exciting trajectory long into the future. How far you go is driven by your passion and performance. In our hybrid work environment, we provide the flexibility and support for you to thrive — working virtually when it's productive to do so and getting together with colleagues in a vibrant community that is purposeful, engaging and inspiring.