541 Principal Java Software Engineer jobs in New Jersey

Principal Engineer - Python API Development

Fidelity Investments

Harrison, NJ 07029

OnsiteUrgently HiringEducation AssistanceHealth InsurancePaid Time OffRetirement Benefit

Bachelor's or Master's degree in Computer Science, Software Engineering, or a closely related engineering discipline; 8+ years (typically 10+) building and operating production platforms and services at scale.
Deep software engineering expertise in Python and distributed systems
Linux fluency and scripting are required
Cloud platform leadership (AWS) —hands‑on with S3, Lambda, Batch, Step Functions, EventBridge, CloudWatch, and SNS/SQS—and experience shaping platform patterns that other teams adopt.

SmartExplore AI is experimental.

New, Posted 15 hours ago

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Software Engineer Sr

Lockheed Martin

Moorestown, NJ 08057

OnsiteFlexible Schedule

Bachelor's Degree in Computer Science or equivalent technical discipline with a concentration in computer science courses
Minimum of 5 years' Software Development experience
Experience with Object Oriented C++ programming
Experience with Automated Test tools and Techniques, Static Code Analysis, and Embedded Applications
This position requires a U.S. DoD Security Clearance at the SECRET level.
Ability to obtain & maintain a U.S. DoD Security Clearance at the SECRET level.
U.S. Citizenship required

SmartExplore AI is experimental.

New, Posted 16 hours ago

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Senior Research Software Engineer

Princeton University

Princeton, NJ 08542

Onsite

Strong programming skills, particularly in the languages used in scientific computing applications (specifically Python).
7+ years' experience as a Research Software Engineer, this includes graduate level and postdoctoral work.
Experience with Python libraries (especially NumPy) and the Python ecosystem of tools for managing environments and code testing, linting, dependency management and packaging (e.g., Poetry), etc.
Demonstrated success:
Consistently using conventional and readable coding style.
Performing test-driven development.
Creating comprehensive and well-written documentation.
Participating in regular code reviews as both a reviewer and reviewee.
Developing and maintaining reproducible build systems.
Using version control systems.
Using CI/CD pipelines.
Demonstrated successes contributing to a collaborative research team.
Ability to work independently.
Ability to learn new programming languages and technologies beyond area of core knowledge.
Ability to communicate effectively with a diverse user base having varied levels of technical proficiencies.
Ability to manage code bases with agility in a fast-paced, collaborative environment.
Bachelor's degree in computer science, engineering, sciences, or related computational field required.

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New, Posted 11 hours ago

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Engineer I, Controls

Medical Manufacturing Technologies LLC

Pennsauken, NJ 08110

$134,599/yr

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Technical Customer Support Engineer, Tier 2

UVEye

Teaneck, NJ 07666

OnsiteHealth InsurancePaid Time OffRetirement Benefit

3+ years of experience in Tier II support, systems administration, or QA engineering
Bachelor's degree in Computer Science or a related field
Proficiency with Linux, Docker, and Kubernetes
Strong troubleshooting skills across hardware and software domains
Hands-on experience with hardware setup, installation, and calibration
Solid understanding of networking (TCP/IP, HTTP, DNS, DHCP)
Experience with cloud platforms like AWS, Azure, or GCP
Familiarity with networking equipment (switches, routers, firewalls, load balancers)
Comfortable using tools like Zendesk, JIRA, and Confluence
Able to work independently and manage multiple priorities under pressure
This role may involve on-site or field-based activities
The salary range listed is $75,000 - $90,000

SmartExplore AI is experimental.

New, Posted 15 hours ago

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In Home Sales Representative

Erie Home

Mahwah, NJ 07430

$125,000-$250,000/yr

OnsiteHealth InsuranceRetirement Benefit

No sales or construction experience needed – we provide full training!
Valid driver's license
Reliable transportation with auto insurance
The ability to travel to and from in-home appointments

SmartExplore AI is experimental.

New, Posted 4 hours ago

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Software Engineer (MES)

L3Harris Technologies

Camden, NJ 08103

OnsiteUrgently HiringBilingual PreferredPaid Time OffRetirement Benefit

U.S. citizenship with a Active Department of Defense (DoD) Secret clearance
Bachelor's or Master's degree in computer engineering, Electrical Engineering, Computer Science, or related field
2+ years of experience debugging applications on simulated and/or target hardware
Usage of a Real-Time Operating System (RTOS), such as Green Hills Integrity, VxWorks, or similar
Excellent oral and written communication skills

SmartExplore AI is experimental.

New, Posted 16 hours ago

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Producer - Freelance

Optimum Communications

Edison, NJ 08818

$52,547-$86,327/yr

New, Posted 16 hours ago

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Principal SI/PI Design Engineer

CIENA

New Providence, NJ 07974

Flexible Schedule

New, Posted 17 hours ago

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Supplier Excellence Engineer

Kenvue

Summit, NJ 07901

HybridPaid Time Off

Bachelor's degree in Plastics/Mechanical/Industrial Engineering or equivalent specialization.
4+ years of experience in Plastics Molding Supplier Quality Management or related field
Expertise in scientific plastics molding (injection, EBM, ISBM, thermoforming), glass forming and process control
Expertise in conducting molding DOE and troubleshooting
Strong knowledge of packaging quality standards
Knowledge of root cause analysis to address plastic molding issues
Ability to travel domestically and internationally up to 25%

SmartExplore AI is experimental.