F

Fidelity Investments

Manages investments and workplace retirement plans

Principal Platform Engineer

Full-TimePosted on 10/14/2026
$107k - $216k/yr
Senior
Boston, MA, USA
In Person
DevOps & InfrastructurePlatform Engineering
No H1B Sponsorship

About the job

Requirements
  • At least 6 years of Cloud Engineering, Site Reliability Engineering, or DevOps experience with AWS, including compute, storage, networking, and managed services.
  • Proficiency with Infrastructure as Code tools (AWS CDK, Terraform, and CloudFormation) and scripting languages (TypeScript for CDK, Python, Bash, and PowerShell).
  • Strong understanding of cloud networking, security groups, VPCs, load balancers, and DNS management.
  • Experience building and maintaining CI/CD pipelines using Jenkins, GitLab CI, GitHub Actions, or Azure DevOps.
  • Knowledge of monitoring and observability tools (Prometheus, Grafana, Datadog, and CloudWatch) and incident management practices.
  • Strong Linux system administration skills and containerization experience with ECS, Docker, and Kubernetes.
  • Ability to troubleshoot complex distributed systems and work independently.
Responsibilities
  • Implement and manage containerized applications using EKS, Docker, and Kubernetes, focusing on reliability and performance.
  • Design and maintain highly available cloud infrastructure using Infrastructure as Code (AWS CDK, Terraform, and CloudFormation).
  • Build and optimize CI/CD pipelines for automated testing, deployment, and monitoring of applications.
  • Monitor system performance, availability, and security across all environments using observability tools.
  • Automate operational tasks, implement backup and disaster recovery procedures, and establish SLAs/SLOs.
  • Participate in the on-call rotation, incident response, and post-mortem analysis to drive continuous improvement.
  • Contribute to FastAPI/Python-based engineering and development of new application services.
  • Work across Data Science, Engineering, and Product teams to build scalable cloud infrastructure for deploying applications and contribute to architecting and engineering application microservices.
  • Help build capabilities for AI-powered search, retrieval, and analytics, working with the Director of Engineering and cross-functional teams to drive technical decisions and deliver scalable, maintainable solutions.
Desired Qualifications
  • Experience in Python/FastAPI development.
  • Prior experience developing generative AI applications.
  • Prior work in a startup or incubator environment, building products from the ground up.

About the company

Fidelity Investments manages money and runs brokerage accounts for individuals, while administering workplace benefits and supporting financial advisers and institutions. Its funds span active management and index investing, and its advice services range from automated portfolios to dedicated wealth managers. Customers trade through online accounts or work with advisers by phone and at investor centers, while employers use its services for retirement savings and stock plans. The business earns advisory fees and charges for selected trades, with institutional custody and clearing services alongside its consumer accounts. Fidelity was founded in 1946 and is headquartered in Boston, Massachusetts, United States.

Company Size

10,001+

Company Stage

Debt Financing

Total Funding

$247.3B

Headquarters

Boston, Massachusetts

Founded

1946

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Simplify's Take

What believers are saying

  • Growth supports business investment: March 2026 reporting showed Fidelity's 2025 revenue rose 15% to $37.7 billion.
  • Eligible US employees build retirement savings: Fidelity combines a 401(k) match with annual profit sharing.
  • Investment teams gained product scope: Fidelity launched four active small and midcap ETFs in April 2026.

What critics are saying

  • Technology careers face restructuring: Fidelity cut about 800 jobs in its technology and product overhaul in May 2026.
  • Boston staff face less flexibility: April 2026's policy sets five office days from September, with phone-support exemptions.
  • Custody teams face irreversible errors: Fidelity's bitcoin fund warns lost private keys without backups permanently strand assets.

What makes Fidelity Investments unique

  • Public shareholders do not set Fidelity's agenda: the investment group remains privately held.
  • Fidelity competes on fund costs: its four ZERO index mutual funds charge no expense ratio.
  • Platform scale supports large projects: Fidelity reported $18 trillion under administration for year-end 2025 in March 2026.

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Benefits

  • Health Insurance
  • Mental Health Support
  • Hybrid Work Options
  • 401(k) Retirement Plan
  • 401(k) Company Match
  • Unlimited Paid Time Off
  • Parental Leave
  • Student Loan Assistance
  • Tuition Reimbursement

Company News

Business Wire
Oct 16th, 2026
Newsroom | Business Wire

The global leader in press release distribution and regulatory disclosure. Public relations and investor relations professionals rely on Business Wire for broad-based and targeted market reach.

IT桔子
Oct 15th, 2026
Veir raises $24.9M Series A+ for high-temperature superconductor power transmission

US startup Veir has raised $24.9 million in a Series A+ round. VXI Capital, Galvanize Climate Solutions, Fidelity Investments, Congruent Ventures, The Engine, and Breakthrough Energy Ventures invested. Veir develops a way to transmit electricity using high-temperature superconductors (HTS). Its platform uses evaporative cryogenic cooling. The technology lets utilities carry more power at lower voltage within a smaller right-of-way. This helps connect the lowest-cost renewable resources to the places that need them.

Business Wire
Oct 13th, 2026
Inscripta Announces the First Commercial Shipment of Its Onyx™ Digital Genome Engineering Platform and Closes $150 Million in New Financing

Financing round led by Fidelity and T. Rowe Price funds underscores vast opportunities to bring Inscripta’s technology to the broader bioeconomy.

Morningstar
Oct 13th, 2026
Soufflé Therapeutics raises $135M Series B led by Juvia Group for muscle and heart RNA therapies

Soufflé Therapeutics has closed an oversubscribed $135 million Series B round led by Juvia Group. New investors include TCG Crossover Management, BB Biotech, Fidelity Management & Research Company, Balyasny Asset Management, and a sovereign wealth fund. Existing backers such as Amgen Ventures, ARCH Venture Partners, and Temasek also took part. The RNA therapies company will use the money to move its three lead programs into clinical studies. They target facioscapulohumeral muscular dystrophy (FSHD), heart failure with reduced ejection fraction, and muscle and metabolic disorders. It will also advance its pipeline in other cell types and tissues. Its REMEDY (Receptor Mediated Delivery) engine delivers oligonucleotide therapies to specific cells outside the liver. "This exceptional group of investors" backs the engine's potential, said chief executive officer Amir Nashat.

Yahoo Finance
Oct 8th, 2026
Fidelity's Timmer predicts 35% Q3 earnings jump as S&P 500 P/E drops 10% year-over-year

Fidelity's Jurrien Timmer predicts Q3 earnings growth could reach 30% to 35% if recent quarters' typical post-reporting bounce repeats. Despite trailing earnings being up 28% and forward earnings expected to rise another 20%, the market's trailing price-to-earnings multiple has fallen 10% year-over-year. Timmer, Fidelity's Director of Global Macro, notes that investors historically don't pay top multiples for peak earnings growth. Bloomberg data shows Q2 2026 growth estimates at 34% and Q1 2026 at 29%, well above the 11% to 15% posted from Q4 2024 through Q3 2025. The S&P 500 has already reached a record high above 7,800. Schwab's Kevin Gordon warns that a single mega-cap capital expenditure miss could disrupt earnings, noting AI stocks now carry much of the index.