Senior Python Developer / Lead

Role:Senior Python Developer / Lead
Location: Philadelphia, PA (Onsite 5 days)
Duration: 12 months

Experience: 8 14 years (10+ preferred)

About the Role
We are looking for a high-caliber Senior Python Developer / Lead who thrives at the intersection of deep technical expertise and strategic leadership. This is not just a coding role it's an opportunity to shape how enterprise-scale applications are built, evolved, and delivered. You will be a thought leader who drives architectural decisions, mentors engineers, and champions engineering excellence across teams. If you're a self-driven go-getter who takes full ownership and leads from the front, we want to hear from you.
What You'll Do
Architect, design, and develop robust, scalable Python-based enterprise applications and services.
Lead and mentor a team of developers, setting technical direction and best practices.
Drive the full software development lifecycle from ideation, design, and implementation to deployment and post-release support.
Design and build cloud-native solutions on AWS leveraging Lambda, Redis, SQS, API Gateway, DynamoDB, and more.
Collaborate cross-functionally with Product, UX, and Business stakeholders to deliver high-impact solutions.
Integrate and work with CMS platforms (Sitecore preferred) to power customer-facing digital experiences.
Build and optimize upsell flows, offer management systems, and personalization engines for commercial platforms.
Contribute to Java-based systems and services when required, ensuring seamless integration across the stack.
Champion code quality through peer reviews, design critiques, and engineering guilds.
Translate ambiguous business problems into clear technical solutions and communicate them persuasively to senior stakeholders.
Stay ahead of the curve evaluate emerging tools, frameworks, and cloud capabilities and evangelize adoption where appropriate.
What You Bring
10+ years of professional software engineering experience (8 years minimum, up to 14 years), with at least 4 years in a tech lead or senior individual contributor capacity. Expert-level Python proficiency Django, FastAPI, Flask, async programming, design patterns, and performance optimization. Hands-on AWS experience Lambda, API Gateway, S3, SQS/SNS, DynamoDB, Elastic ache (Redis), Cloud Watch, IAM, and more.
Strong understanding of microservices architecture, RESTful APIs, and event-driven systems.
Working knowledge of Java ability to read, review, and contribute to Java codebases.
Experience with Sitecore or other enterprise CMS platforms (AEM, Optimizely, etc.).
Background in commercial platforms upsell logic, offer management, promotions, and pricing engines.
Proficiency with CI/CD pipelines, Docker, Kubernetes, and infrastructure-as-code tools (Terraform/CDK).
Strong command of SQL and NoSQL databases.
Proven track record of leading and delivering large-scale, complex engineering initiatives.
Excellent verbal and written communication skills ability to articulate technical vision to both technical and non-technical audiences.
Leadership & Culture Fit
Thought leader who proactively identifies technical gaps and drives improvements without being asked.
Self-driven and highly motivated you don't wait for direction; you create it.
Strong ownership mentality you take responsibility for outcomes, not just outputs.
Collaborative by nature but decisive when needed.
Track record of coaching, mentoring, and growing engineering talent.
Comfortable navigating ambiguity in fast-paced enterprise environments.
Nice to Have
Experience with telecom or cable/broadband industry platforms.
Familiarity with personalization and recommendation engines.
Contributions to open-source projects or technical communities.
AWS Certifications (Solutions Architect, Developer Associate, etc.).