JobsPrincipal Full Stack Engineer
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Principal Full Stack Engineer

Fidelity

Location

Merrimack, NH

Type

Full-time

Posted

8/18/2026

Compensation

Not listed

Undergraduate with 5+ Years of Experience
H-1B FY202699.4% approval-62% YoY
💎 Strong sponsor

Job description

The role is for a senior engineer in the Fidelity Trade Management Engineering group, focusing on building and maintaining the brokerage platform's order management and trade processing system. The team is high functioning and fast-paced, utilizing cutting-edge technologies to deliver low latency and high throughput trading solutions. The ideal candidate will be versatile, eager to tackle new challenges, and possess strong leadership and teamwork skills. This position emphasizes both independent and collaborative work to drive innovative solutions.

Requirements

  • Have at least a bachelor’s degree in Computer Science, Engineering, Information Technology or equivalent, with a preference for advanced study.
  • Minimum 8 years of software design, development and performance testing experience.
  • Deep hands-on experience in Software Performance Engineering.
  • Demonstrated skill in Java, Spring, Python, and Linux.
  • Hands-on experience using tools like jMeter to build performance harness for software benchmarking.
  • Willingness to guide and mentor junior team members on solid engineering practices.
  • Previous exposure to trading systems or brokerage technology.
  • Knowledge of the FIX protocol is a plus.

Responsibilities

  • Work across the organization and collaborate with teams to build a highly scalable and resilient trading platform.
  • Deliver high quality, timely, cost-effective, and maintainable software solutions in an agile environment to meet functional and non-functional business requirements.
  • Actively contribute to the improvement of engineering practices such as code and design reviews, cloud strategy, and build and deployment pipelines.
  • Work with squad lead and team tech lead on a frequent, recurring basis to design and implement novel solutions to complicated problems.
  • Clearly present complex technical solutions, ideas, and plans to management, program teams, and less technical stakeholders as needed.
  • Develop an understanding of the business domain and contribute to technology discussions with business partners and other external parties.
  • Investigate creative practices and help decide how to apply them within the team.

Benefits

  • Fidelity offers competitive compensation, annual bonuses, retirement contributions, comprehensive healthcare coverage, parental leave, tuition assistance, wellness programs, and extensive professional development opportunities.

H-1B filing history

Public USCIS petition and DOL LCA counts · latest USCIS FY2026, LCA FY2026

Filing entity: Fidelity Technology Group Llc D B A Fidelity Investments

As of Aug 23, 2026

Initial approvals

64

FY2026

Approval rate

99.4%

FY2026

LCA certified

1,080

FY2026

Entry-level share

1.5%

FY2026

Initial approvals YoY

-62%

Trend

LCA certified YoY

-35%

Trend

Initial approvals by fiscal year

Approval rate by fiscal year

Continuing vs initial approvals

LCA certified positions by quarter

LCA certified positions by fiscal year

Based on public USCIS and DOL filings; not a sponsorship guarantee.

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