Senior Python Backend Developer

3

Pillar is an AI transformation partner dedicated to helping enterprises build AI‑native products and intelligent agents that will shape the future of business. With teams across North America, Europe, Latin America, and Asia, we collaborate with leading companies in financial services, healthcare, media, and technology to modernize and compete boldly. Our HelixAI platform and Helix Pods delivery model place our engineers at the center of real agentic transformation, enabling open, portable, and durable solutions.

As a senior backend engineer, you will architect scalable Python‑based backend services for the BX platform, guide a team of engineers, and lead the delivery of cloud‑native, AWS‑based systems that support clinical research.

• Facilitate effective communication with client project stakeholders regarding project status and technical recommendations.
• Lead the design and development of backend services and APIs using Python and the Pyramid framework on AWS.
• Architect and manage PostgreSQL schemas, queries, and performance optimizations for clinical‑grade data.
• Build and maintain AWS infrastructure including Kubernetes (EKS), Lambda, API Gateway, and cloud‑to‑cloud integration patterns.
• Define backend coding standards, API design patterns, security best practices, and testing strategies.
• Mentor and guide backend engineers, driving engineering excellence across the team.
• Engage in agile software development including stand‑ups, sprint planning, retrospectives, and estimation.
• Independently drive project delivery within defined architecture, demonstrating autonomy from conceptualization to deployment.

• Experience and expertise in the following areas:
  • Design and implement scalable backend services and APIs using Python.
  • Architect PostgreSQL databases with strong skills in schema design, query optimization, and data integrity.
  • Utilize AWS services:
    Kubernetes (EKS), Lambda, API Gateway, RDS, S3, IAM, and cloud‑to‑cloud integrations.
  • Mentor engineers, conduct code reviews, and enforce engineering standards across the team.
  • Deliver production systems with high reliability, observability, and security.
• Must‑Have Skills & Tools:
  • Languages:
    
    Python, JavaScript, SQL (REST API)
  • OAuth 2
  • Docker
  • Database:
    PostgreSQL (advanced – schema design, performance tuning, stored procedures)
  • Cloud: AWS – Kubernetes (EKS), Lambda
  • Tools:
    Jira, Bitbucket/Git Hub, Slack/Teams
• Good to Have
  
  Skills:
  • Framework:
    Pyramid (Python web framework)
  • VS Code
  • Type Script
  • Snowflake
  • SQL Alchemy (ORM)
  • 6+ years of backend engineering experience, including 2+ years in a lead or tech lead role.
  • Strong understanding of SOLID principles, OOP, and clean architecture patterns.
  • Familiarity with OWASP security practices.
  • English proficiency.

• Experience with clinical or healthcare data systems (HL7, FHIR, GxP, 21 CFR Part 11).
• Knowledge of microservices and serverless architectural patterns.
• Experience with Docker, container orchestration, and modern CI/CD tooling.
• Proficiency with unit testing, integration testing, and TDD practices.

• Flexible work environment, remote‑first approach, and hybrid options.
• Global team with diverse cultures;
  English is spoken daily.
• Focus on wellbeing with generous time off and wellness programs.
• Professional services model supporting career growth and development across projects.
• We are an equal opportunity employer. We live by values such as Intrinsic Dignity and Open Collaboration to create cutting‑edge technology and reinforce our commitment to diversity globally and locally.