Senior Python Full stack Engineer
Posted on: 3 Feb 2026
Westlake, TX
Job Description
The Role
We are looking for a passionate, self-motivated Software Engineer with strong programming fundamentals, software design and practices to help build and manage our cloud platform. In this role, you will have a great opportunity to marry your full-stack software engineering skills with hands on cloud development. Join our talented team of engineers, designing and building the foundation that propels our business to harness the power of cloud.
The Expertise and Skills You Bring
Bachelor’s degree or higher in a technology related field (e.g. Engineering, Computer Science, etc.)
5+ years of software engineering experience
Certifications preferred: AWS Solutions Architect, AWS Developer, or Kubernetes Application Developer.
Passion for excellence, automation, innovation, and collaboration.
Eager to learn new technologies, ways of working, and to adapt every day.
Bring curiosity and a questioning mind-set to work, injecting new points of view to the team.
Ability to triage, execute root cause analysis, and be decisive under pressure.
Ability to creatively solve new, interesting problems in a dynamic environment.
Ability to work with a variety of individuals and groups, both in person and virtually, in a constructive and collaborative manner and build and maintain effective relationships.
Ability to act confidently and cautiously in break-the-glass production scenarios to resolve customer outages.
Experience with deploying and managing LLM models, Retrieval-Augmented Generation (RAG).
Full stack AI engineering with hands-on experience building and deploying AI-powered applications.
Knowledge on Prompting & Interaction with LLMs, Data Handling & Privacy Awareness, Hallucination & Accuracy, Bias & Limitations, Tokens & Costs, Gen AI modalities, Determinism & Randomness, Agentic Behavior.
Proficient in object-oriented Python.
Solid understanding/experience in storage, containers, serverless architecture/framework, cloud IAM controls and policies.
Hands-on experience building and deploying applications using a variety of Amazon Web Services (primarily Cloud Formation, compute, EBS volumes and container).
Ability to apply design patterns and object-orientation to solutions.
Hands-on experience with containers and container orchestration.
Experience managing systems using infrastructure as code tools (CloudFormation, Ansible, Terraform, ARM, etc).
Strong understanding of Kubernetes concepts/ecosystem and deploying applications into EKS.
Understanding of versioning and release practices (SCM), code collaboration practices (Git)
Proficiency with CI/CD tools, especially Jenkins.
Experience working with database technologies (Oracle/PostgreSQL/SQL Server) preferred.
Experience in defining and implementing a comprehensive cloud reliability and observability strategy, ensuring that Fidelity’s cloud systems are always available when our customers need them.
Strong understanding of engineering excellence principles, defining engineering standards and proven experience of increasing engineering maturity.
Fidelity Investments
Boston, MA
Fidelity Investments is a privately-owned investment management company that was established in 1946 as a mutual fund company. Fidelity now offers a range of services including fund distribution and investment advice, wealth management, life insurance, retirement services, and securities execution and clearance. It manages equity, fixed income, and balanced mutual funds for individual investors, businesses, financial advisors, and institutional investors.
Based in Boston, Massachusetts, it is one of the largest investment management firms in the United States, with over 26 million customers, $6.5 trillion in total customer assets, and more than $2.4 trillion in global assets under management
History of Fidelity Investments
The Fidelity Fund was established in 1930, a year after the stock market crash of 1929 and before the Great Depression of 1933. The fund continued to operate until 1943 when it was acquired by Boston-based lawyer Edward C. Johnson II. At the time, the fund reported assets under management valued at $3 million. In 1946, Johnson II founded the Fidelity Management and Research Company, now Fidelity Investments, to serve as an investment advisor to the Fidelity Fund. When running the fund, Johnson’s objective was to buy stocks with a potential for growth, and not necessarily blue-chip stocks.
Fidelity Investments Operations
Fidelity Investments operates several businesses, with the main ones being mutual funds and brokerage services. The mutual fund division comprises three divisions – equity, high-income, and fixed income divisions. The company operates Fidelity Contrafund, the largest non-indexed mutual fund in the United States, with over $107.4 billion in assets. Fidelity Investments also owns Fidelity Magellan, which was at one time managed by former CEO and President Ned Johnson. Fidelity Magellan manages assets totaling $15.5 billion.
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IndustryBanking/Financial Services
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No. of Employees50,000+
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Website
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Jobs Posted892
