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Remote Principal Java Software Engineer Jobs in Upper Darby, PA

Mondo

Staff Software Engineer

Horsham, PA · Remote

$80 - $90/hr

Staff Software Engineer, location is REMOTE. The start date is ASAP for this contract to hire ... Strong experience with Java and/or Python development * Expertise building RESTful APIs using ...

Gnostech

Software Engineer (US-Remote)

Marlton, NJ · On-site +1

Overview Location * US-Remote or Marlton, NJ area Job Title * Software Engineer Salary ... Experience with modern programming languages such as Java, Python, or similar backend technologies.

Mondo

Sr. Software Engineer (Full Stack)

Horsham, PA · Remote

$60 - $65/hr

Remote (must be able to work Eastern Standard Time hours) Start Date: ASAP Duration: Contract-to ... Design, build, and maintain full-stack features spanning React front-end interfaces and Java Spring ...

YO AI Labs

AI Engineer - Remote

Philadelphia, PA · Remote

$80 - $120/hr

Senior Software Engineer Job Type: Contractor (~15 hours/week) Location: Remote Job Summary We are ... Strong proficiency in Python 3, Java, Rust, C++, or TypeScript . * Strong understanding of ...

Comcast

Senior Software Engineer (Engineer 4)

Philadelphia, PA · On-site +1

$123K - $163K/yr

... the remote option.) Job Summary We are seeking a Senior Software Engineer to provide hands-on ... Strong hands-on experience designing and developing scalable applications and services using Java ...

YO AI Labs

Backend Engineer - Remote

Philadelphia, PA · Remote

$80 - $120/hr

Senior Software Engineer Job Type: Contractor (~15 hours/week) Location: Remote Job Summary We are ... Strong proficiency in Python 3, Java, Rust, C++, or TypeScript . * Strong understanding of ...

Ascent Placement Partners

Be Seen First

Remote Software Engineer - Technical Advisor

Philadelphia, PA · Remote

$150/hr

Remote Software Engineer - Technical Advisor $150.00 USD/hour | 100% Remote (USA Only) | Mostly ... Senior/Staff/Principal engineers, tech leads, or open-source maintainers * Experience in codebases ...

New

Ascent Placement Partners

Be Seen First

Remote Software Engineer - Technical Advisor

Philadelphia, PA · Remote

$150/hr

Remote Software Engineer - Technical Advisor $150.00 USD/hour | 100% Remote (USA Only) | Mostly ... Senior/Staff/Principal engineers, tech leads, or open-source maintainers * Experience in codebases ...

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All JobsPrincipal Java Software Engineer JobsRemote Principal Java Software Engineer JobsRemote Principal Java Software Engineer Jobs in Upper Darby, PA

Remote Principal Java Software Engineer information

See Upper Darby, PA salary details

$78.5K

$141.6K

$190.6K

How much do remote principal java software engineer jobs pay per year?

As of Sep 9, 2026, the average yearly pay for remote principal java software engineer in Upper Darby, PA is $141,577.00, according to ZipRecruiter salary data. Most workers in this role earn between $121,500.00 and $156,100.00 per year, depending on experience, location, and employer.

What is the difference between Remote Principal Java Software Engineer vs Remote Senior Java Developer?

AspectRemote Principal Java Software EngineerRemote Senior Java Developer
Required CredentialsBachelor's/Master's in Computer Science, Java certificationsBachelor's in Computer Science, Java certifications
Work EnvironmentLeadership role, architecture design, cross-team collaborationDevelopment, coding, debugging within teams
Employer & Industry UsageTech companies, large enterprises, consulting firmsStartups, mid-sized companies, tech firms
Common Search & Comparison IntentUnderstanding seniority, responsibilities, and career progressionTechnical skills, project involvement, experience level

The Remote Principal Java Software Engineer typically holds a leadership position, focusing on system architecture and guiding teams, whereas the Remote Senior Java Developer primarily engages in coding and technical implementation. Both roles require strong Java expertise and relevant certifications, but the principal role involves strategic oversight and cross-team coordination, making it suitable for experienced professionals aiming for leadership in Java development.

What are popular job titles related to Remote Principal Java Software Engineer jobs in Upper Darby, PA?

For Remote Principal Java Software Engineer jobs in Upper Darby, PA, the most frequently searched job titles are:

What cities near Upper Darby, PA are hiring for Remote Principal Java Software Engineer jobs?

Cities near Upper Darby, PA with the most Remote Principal Java Software Engineer job openings:

Remote Principal Java Software Engineer jobs near you
Infographic showing various Remote Principal Java Software Engineer job openings in Upper Darby, PA as of September 2026, with employment types broken down into 1% Internship, 1% As Needed, 86% Full Time, 9% Part Time, and 3% Contract. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution, with an average salary of $141,577 per year, or $68.1 per hour.

AI Software Engineer - Remote

Philadelphia, PA • Remote

YO AI Labs
See more jobs at YO AI Labsexternal

$80 - $120/hr

Full-time

Posted 13 days ago

Job description

Senior Software Engineer

Job Type: Contractor (~15 hours/week)
Location: Remote

Job Summary

We are seeking experienced Senior Software Engineers to support an AI training project by creating reinforcement learning environments that evaluate AI models on complex software engineering tasks using Model Context Protocol (MCP) tools.

You will design reproducible environments, deterministic verification, and reference solutions for tasks such as bug fixing, feature implementation, codebase refactoring, and performance optimization. No prior AI experience is required.

Key Responsibilities
  • Create reinforcement learning environments for software engineering tasks.
  • Design tasks involving bug fixing, feature development, refactoring, and performance optimization.
  • Build deterministic verification systems and golden reference solutions.
  • Evaluate AI agents' ability to reason through complex codebases and use MCP tools effectively.
  • Develop realistic, reproducible software engineering scenarios.
  • Ensure tasks accurately measure coding ability, problem-solving, and tool usage.
  • Document solutions and provide clear technical feedback.
Required Skills
  • Strong proficiency in Python 3, Java, Rust, C++, or TypeScript.
  • Strong understanding of algorithms and data structures.
  • Experience with bug fixing and debugging complex software issues.
  • Proven experience in feature implementation and codebase refactoring.
  • Strong knowledge of performance optimization and tuning.
  • Excellent written and verbal communication.
  • Strong attention to detail.
Preferred Qualifications
  • Experience working with large-scale or distributed codebases.
  • Familiarity with AI/ML systems is a plus but not required.
  • Experience with rigorous code reviews and software engineering best practices.
  • Experience working effectively in remote or cross-functional teams.
Hiring Process
  1. Submit an application and screening questions.
  2. Complete an AI interview (~30 minutes).
  3. Complete a technical assessment, if required.
  4. Hiring Manager review.
Compensation

Compensation is output-based, with payment provided per task that meets project specifications. Minimum weekly submission requirements may apply.

Availability

Selected experts should be prepared to begin their first tasks within 24–48 hours of completing onboarding.