Senior Software Engineer Backend (Python)

Kepler executes engineered marketing, where every message and ad delivered helps create a more personalized and productive relationship between brands and their consumers. We do this by acting as clients’ agency of record, as their in-house team, or some hybrid of the two – and by harnessing data and technology across all paid digital media and data-driven CRM channels.

Kepler prides itself on being a great place to work. In fact, we’re proud to share that AdAge recognized Kepler among the Best Place to Work in 2022, validating our investment in our team and our clients.

• We're transparent with our employees. You'll hear updates on company financials, how we're performing against bonus goals, and how we're responding to challenges we face. 
• We're growing. For you, that means unparalleled growth opportunities and a role in shaping the direction of the company. 
• We're fun. You'll work with and learn from the smartest people in the industry and have a blast doing it.  

Summary:

We're seeking an experienced Senior Backend Engineer, with Frontend Knowledge to join our engineering team in the ongoing development and evolution of our platform. The ideal candidate will have a strong background in backend technologies with a working familiarity with frontend development. This role offers the opportunity to make significant technical contributions to a sophisticated platform used by marketing professionals while collaborating with team leads.

• Design and implement robust backend solutions using:
  • Python backend services (Flask, FastAPI, or similar)
  • Python-based GraphQL servers
  • ORM SQL (SQLAlchemy)
• Contribute to technical decision-making processes while balancing business requirements with technical constraints
• Follow and extend best practices for code quality, testing, and deployment processes across the entire stack
• Collaborate with product management, UI/UX designers, and engineering leads to implement technical specifications
• Implement scalable data models and APIs to support complex business logic
• Optimize application performance across multiple applications
• Apply type safety and code reusability best practices
• Participate in the full development lifecycle from planning to deployment
• Stay up-to-date on the latest tools and techniques, recommending them for incorporation into our platform.

Must Have:

• 4+ years of experience in backend development
• Proficiency in Python and related frameworks (Flask, FastAPI, or similar)
• Experience with SQL databases, ORM technologies (SQLAlchemy), and GraphQL (Python-based servers)
• Experience with form management in React applications
• Understanding of state management patterns, testing frameworks, and deployment strategies
• Experience with build systems, module bundlers, and CI/CD pipelines
• Excellent verbal and written communication skills in English for technical discussions, documentation, and knowledge sharing
• Proficiency with preferred development environment (Mac or Linux) and related development tools
• Ability to collaborate synchronously with team members during core hours (10:00 AM - 6:00 PM US Eastern Time) while respecting work-life balance

Nice to Have:

• Experience in advertising technology or marketing analytics
• Knowledge of budget management and financial data systems
• Experience developing multi-app workspaces or monorepos
• Familiarity with UI component libraries (particularly Mantine or similar)
• Familiarity with data visualization libraries and techniques
• Understanding of accessibility standards and best practices
• Experience with real-time data processing systems
• Understanding of data privacy regulations and security best practices
• Experience with systems compliant with ISO 27001 and other security frameworks such as SOC 2, NIST 800-53, or HIPAA requirements
• Contributions to open-source projects or technical community
• Knowledge of first principles (e.g. basics of tools, internals of the computer, low level concepts and how work actually gets done, etc)
• Advanced degree in Computer Science or related field
• Some experience (1+ years) in team leadership or people management in a technical context

Benefits & Perks

• Competitive health and dental benefits
• Tuition reimbursement and training stipend
• Hybrid Office/WFH Schedules: office supplies, internet, and phone stipend
• “Work from Anywhere” 4 weeks per year
• Stocked kitchen, and other team outings
• Collaborative and friendly work space, easily commutable location
• Volunteering & altruism opportunities
• Team building lunches and events, and company celebrations: Summer, Halloween, Holidays, and many multicultural holidays recognized/celebrated
• If something is important to you that’s not listed here, let us know!

Career & Development Focus

• Ongoing learning and development for education opportunities such as webinars, books, classes, relevant conferences and events
• Opportunities to pursue business related side projects and Hackathons
• Environment of learning from peers, including 30+ class training program, Kepler University, powered by Center of Excellence and Tiger Team subject matter expert groups
• Opportunity to work with cutting edge technology and industry thought leaders
• Kepler Rocket Mentorship Program: beneficial for the development of both mentors and mentees

**All applications must include a Resume & Cover Letter in English to be considered. 

Kepler is a people first organization. If this roles piques your interest but you may not check every box, we still encourage you to apply! Studies show that imposter syndrome can prevent women and people of color from applying unless they meet every single qualification. We welcome all who are interested to apply, you just might be a great candidate for this role or others.

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