Python Fastapi Developer Jobs in Torrance, CA (NOW HIRING)

Position Overview
At Apollo, we're a global team of alternative investment managers passionate about delivering uncommon value to our investors and shareholders. With over 30 years of proven expertise across Private Equity, Credit and Real Estate, regions, and industries, we're known for our integrated businesses, our strong investment performance, our value-oriented philosophy - and our people.
Apollo Insurance Solutions Group (ISG) provides tailored portfolio and asset management services to retirement services and insurance clients. We are seeking a Senior Engineer to join our Client Engineering team, where you will play a hands-on role in building and operating the systems that support client-facing operations, including onboarding and reporting.
This role is ideal for a seasoned back-end or full-stack engineer with a strong software engineering background and solid computer science fundamentals. You will spend the majority of your time designing, developing, and operating production systems in a complex, data-driven financial environment, while also serving as a technical leader who mentors teammates and contributes to engineering excellence across the team.
Primary Responsibilities
Hands-On Engineering & Ownership

• Design, build, and maintain Python-based services and APIs that support client onboarding, data ingestion, validation, and reporting.
• Own systems end to end, from technical design and implementation through deployment, monitoring, and production support.
• Build reliable, observable, and well-tested platforms that handle business-critical financial data at scale.
• Contribute to full-stack components when required, including internal tools and client-facing reporting interfaces.

System Design & Architecture

• Lead the design of scalable, maintainable system architectures with a strong emphasis on correctness, performance, and operational simplicity.
• Make pragmatic architectural decisions that balance near-term delivery with long-term platform health.
• Continuously improve existing systems by reducing technical debt and operational risk.

Workflow & Platform Engineering

• Design and implement workflow-driven systems that orchestrate onboarding, approvals, validations, and reporting processes.
• Translate complex client, operational, and regulatory requirements into efficient and well-engineered workflows.
• Drive automation and self-service capabilities across the client lifecycle.

Collaboration & Technical Leadership

• Act as a senior technical mentor, setting a high bar for engineering quality, ownership, and accountability.
• Partner closely with Product, Data, Operations, Security, and Compliance teams to deliver solutions aligned with business priorities.
• Provide hands-on technical input into planning, estimation, and prioritization.

Qualifications & Experience
Required Qualifications

• 6+ years of professional software engineering experience, with deep expertise in back-end development.
• Advanced proficiency in Python and modern Python frameworks (e.g., FastAPI, Flask, Django).
• Strong software engineering fundamentals, including system design, data modeling, testing, and code quality.
• Experience building distributed systems, APIs, and data-intensive applications.
• Strong SQL skills and experience working with relational databases in production.
• Experience operating and supporting systems in production environments with high reliability and correctness requirements.
• Proven ability to take ownership and deliver independently in a high-expectation environment.
• Ability to thrive in a fast-paced, dynamic environment, balancing multiple tasks simultaneously.
• Entrepreneurial mindset with a strong sense of initiative and drive.
• Collaborate and adept working with professionals of all levels.

Preferred Qualifications

• Full-stack experience with modern front-end technologies (e.g., React, TypeScript).
• Experience designing and building workflow-based systems, including onboarding pipelines and approval or orchestration frameworks.
• Experience working with or building AI-powered solutions, such as:
  • LLM-driven automation or decision support
  • Intelligent document processing or data extraction
  • AI-assisted reporting, validation, or client-facing tooling
• Experience with cloud platforms (AWS preferred) and infrastructure-as-code.
• Familiarity with financial services, client reporting, onboarding processes, or regulated environments.
• Exposure to event-driven architectures, messaging systems, or data pipelines.

ABOUT APOLLO
Apollo is a high-growth, global alternative asset manager. In our asset management business, we seek to provide our clients excess return at every point along the risk-reward spectrum from investment grade to private equity with a focus on three investing strategies: yield, hybrid, and equity. For more than three decades, our investing expertise across our fully integrated platform has served the financial return needs of our clients and provided businesses with innovative capital solutions for growth. Through Athene, our retirement services business, we specialize in helping clients achieve financial security by providing a suite of retirement savings products and acting as a solutions provider to institutions. Our patient, creative, and knowledgeable approach to investing aligns our clients, businesses we invest in, our employees, and the communities we impact, to expand opportunity and achieve positive outcomes.
OUR PURPOSE AND CORE VALUES
Our clients rely on our investment acumen to help secure their future. We must never lose our focus and determination to be the best investors and most trusted partners on their behalf. We strive to be:
The leading provider of retirement income solutions to institutions, companies, and individuals.
The leading provider of capital solutions to companies. Our breadth and scale enable us to deliver capital for even the largest projects - and our small firm mindset ensures we will be a thoughtful and dedicated partner to these organizations. We are committed to helping them build stronger businesses.
A leading contributor to addressing some of the biggest issues facing the world today - such as energy transition, accelerating the adoption of new technologies, and social impact - where innovative approaches to investing can make a positive difference.
We are building a unique firm of extraordinary colleagues who:
Outperform expectations
Challenge Convention
Champion Opportunity
Lead responsibly
Drive collaboration
As One Apollo team, we believe that doing great work and having fun go hand in hand, and we are proud of what we can achieve together.
OUR BENEFITS
Apollo relies on its people to keep it a leader in alternative investment management, and the firm's benefit programs are crafted to offer meaningful coverage for both you and your family. Please reach out to your Human Capital Business Partner for more detailed information on specific benefits.
Pay Range
$140,000 - $205,000
Apollo Global Management, Inc. (together with its subsidiaries and affiliates) is committed to championing opportunity.
The firm and its affiliates comply with applicable discrimination and equal opportunities legislation in all of its jurisdictions and do not discriminate in employment or recruitment based on race, color, religion, gender, national origin, veteran status, disability, age, citizenship, marital or domestic/civil partnership status, sexual orientation, gender identity or expression or any other protected characteristic under applicable law.
The contents of the qualifications and experience section of this job description are a guideline only. If an applicant can otherwise demonstrate their suitability for the role they will be considered.
The base salary range for this position is listed above. This position is also eligible for a discretionary annual bonus based on personal, team, and Firm performance. Compensation ranges are based on several factors including job function, level, and geographic location. Final offer amounts are determined by multiple factors including candidate experience and expertise, and may vary from the amounts listed here.