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Junior Developer Internship Jobs in Delaware (NOW HIRING)

Energy Engineer II

Wilmington, DE · On-site

$75K - $100K/yr

Providing e guidance and mentorship to junior engineers and interns, fostering skill development in energy auditing and project management; and . * Supporting training initiatives, including internal ...

Energy Engineer II

Wilmington, DE · On-site

$75K - $100K/yr

Providinge guidance and mentorship to junior engineers and interns, fostering skill development in energy auditing and project management; and. * Supporting training initiatives, including internal ...

Energy Engineer II

Wilmington, DE · Hybrid

$75K - $100K/yr

Providinge guidance and mentorship to junior engineers and interns, fostering skill development in energy auditing and project management; and. * Supporting training initiatives, including internal ...

Collaborate with scientists, engineers, and manufacturing partners to deliver project objectives ... Lead research projects and provide technical direction to laboratory technicians and junior team ...

Collaborate with scientists, engineers, and manufacturing partners to deliver project objectives ... Lead research projects and provide technical direction to laboratory technicians and junior team ...

Junior Developer Internship information

See Delaware salary details

$21.5K

$72.4K

$115.7K

How much do junior developer internship jobs pay per year?

As of Aug 28, 2026, the average yearly pay for junior developer internship in Delaware is $72,416.00, according to ZipRecruiter salary data. Most workers in this role earn between $55,000.00 and $84,200.00 per year, depending on experience, location, and employer.

What is a junior developer internship?

Junior Developer Internships are short-term positions designed to provide students or recent graduates with hands-on experience in software development. Interns typically work under the supervision of experienced developers, assisting with coding, debugging, testing, and other programming-related tasks. These internships offer valuable exposure to real-world projects, development tools, and team collaboration, helping interns build their technical skills and professional network. Junior Developer Internships are a common entry point for those seeking a career in software engineering.

What types of projects and tasks can I expect to work on during a junior developer internship?

As a Junior Developer Intern, you'll typically support ongoing development projects by assisting with coding, debugging, and testing under the guidance of more experienced developers. You may work on smaller features, fix bugs, or contribute to documentation, often collaborating through code reviews and team meetings. This role offers hands-on experience with real-world software development processes, tools, and workflows, giving you the chance to build your technical skills while learning from mentors in a collaborative team environment.

What are the key skills and qualifications needed to thrive as a junior developer intern, and why are they important?

To excel as a Junior Developer Intern, you should have a fundamental understanding of programming languages (such as Java, Python, or JavaScript), basic software development principles, and often be pursuing or have completed a relevant degree in computer science or a related field. Familiarity with version control systems like Git, integrated development environments (IDEs), and basic debugging tools is typically expected. Strong problem-solving abilities, eagerness to learn, and effective communication skills help set you apart in collaborative and fast-paced environments. These skills and qualities are crucial for quickly adapting to new technologies, contributing meaningfully to projects, and maximizing learning during the internship.

What are the most commonly searched types of Junior Developer jobs in Delaware?

The most popular types of Junior Developer jobs in Delaware are:

Energy Engineer II

Wilmington, DE • On-site

New Ecology, Inc
Environmental Consulting Services • 11 - 50 employees

$75K - $100K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 10 days ago


Job description

Job Type
Full-time
Description
Job Type: Full-time, Exempt
Location: Wilmington, DE
Hiring Rate: $75,000 - $100,000 per year, dependent on experience and education
Benefits: Generous benefits package
Work Location: Hybrid-three days remote and two days in-office. * This role requires regular on-site client or field visits, including on days scheduled for remote work. Employees may work from home before or after site visits, depending on scheduling and operational needs.
Position Overview:
New Ecology, Inc. is seeking an engineering candidate with 3-5 years of experience for the position of Energy Engineer 2. The successful candidate will primarily work out of NEI's Wilmington, DE office. This position is part of our growing Decarbonization Division. The Decarbonization Engineering team works with building owners and developers to provide services that reduce carbon emissions and improve building performance, operation, resiliency, and resident health and comfort. Services include benchmarking building energy performance, assessing existing conditions and developing scopes of work for improvement, estimating savings and cost, predicting compliance with regulations, assisting with implementation tasks and more.
The Energy Engineer 2 will provide technical and construction management support to decarbonization projects in the Mid-Atlantic region. Work will require travel to client sites primarily in Delaware, and skills such as written and oral communications, comprehension of utility data and use thereof, building systems and energy auditing processes. This person will work with the team on program planning and ensuring services and results are delivered in compliance with utility[JI1] programs and client expectations. A typical workday may include: meet and interact with facilities managers and contractors on site to conduct energy audits, explore opportunities for upgrades of existing mechanical systems, prepare scopes of work for installation of efficiency upgrades, seek and evaluate competitive bids, conduct post-installation site inspections and verify work is done to specifications. New Ecology is developing an emerging service to help owners plan for decarbonization over time, and this person will assist in that effort. We are seeking a candidate with a mechanical engineering or related degree and experience with HVAC systems.
Duties and Responsibilities:
Reporting to New Ecology, Inc.'s Director of Engineering/Senior Energy Engineer, the candidate will also collaborate extensively with project managers and other technical staff, as well as client's staff. Specific tasks will include:
  • Conducting ASHRAE energy audits, including site assessments of mechanical, plumbing, and electrical systems and building enclosures;
  • Preparing and delivering written audit reports;
  • Analyzing energy usage and calculating savings using spreadsheet or energy modeling tools;
  • Developing recommendations for energy efficient upgrades to building envelopes, plumbing, HVAC, lighting, appliances, on-site power generation, and other energy and water systems;
  • Estimating implementation costs and conducting cost-benefit analysis of upgrades;
  • Conducting quality control inspections of completed projects, including preparation of site visit reports to document project conditions with supporting photo descriptions; .
  • Providing e guidance and mentorship to junior engineers and interns, fostering skill development in energy auditing and project management; and .
  • Supporting training initiatives, including internal knowledge sharing on building science, decarbonization strategies, and efficiency technologies.

New Ecology typically seeks to hire multidisciplinary, lifelong learners who naturally seek deeper understanding of how buildings operate, how finances, markets, construction and regulations affect building ownership and tenants, and how this understanding can be used to persuade owners and operators to adopt greener practices and invest in water and energy efficiency upgrades.
Required Qualifications:
  • A bachelor's degree in mechanical engineering or related field;
  • 3-5 years of experience in energy efficiency, HVAC design, or energy auditing; .
  • Experience in evaluation of building mechanical systems and other building systems, HVAC design, and energy efficiency consulting work;
  • Understanding of building science, energy-efficient buildings, renewable energy systems, climate change and a curiosity to continually learn more;
  • Strong interest in improving building performance to reduce energy use and enhance occupant comfort;
  • Physical ability to inspect all aspects of buildings, including accessing basements and roofs, working outside, climbing stairs/ladders, and the ability to handle and carry equipment up to 40 pounds;
  • Proficiency with Microsoft Office; and .
  • A valid driver's license.

The ideal candidate will also have:
  • EIT or PE, preferred;
  • Certifications such as CEM, BPI Multifamily, preferred; .
  • Demonstrated knowledge of multifamily residential construction and building systems;
  • Experience in construction or home performance contracting;
  • Experience interfacing with contractors including coordinating e roles and responsibilities, and addressing questions regarding implementation of high-performance construction and retrofit projects;
  • Experience with energy modeling software;
  • Ability to manage time effectively and within project budget constraints;
  • Ability to be responsible for projects and deliverables;
  • Strong writing skills and experience writing reports for clients;
  • Knowledge of utility rebate programs; and,
  • Experience auditing multifamily , and public buildings.

Schedule: Full-time, Exempt (40 hours per week, M-F, 9 am-5 pm)
Compensation: $75,000-$100,000, based on experience and education. The full potential range for this Wilmington, DE-based role is $75,000-$125,000, with typical hires within the lower half and strong potential for performance-based growth.
Benefits: 403(b) with match, medical, dental, and vision coverage, 100% employer-paid life insurance, paid time off, parental leave, and professional development support for training and certifications.
Work Location: This position is based in Wilmington, DE, serving initiatives from the greater Philadelphia area through Washington, D.C. In-office presence is required two days per week, with regional travel several times per month and occasional evening meetings.
Travel: A valid driver's license and/or reliable transportation are preferred, as local and regional travel to client sites, and partner meetings and New Ecology's Baltimore office is routine. Occasional overnight travel is required for conferences and visits to New Ecology's Boston, MA headquarters.
About New Ecology: New Ecology (www.newecology.org) tackles the climate and housing crises by delivering solutions that cut energy use, reduce emissions, and improve health in low-income communities. We preserve affordable housing, support green jobs, and build community wealth.
Headquartered in Boston, MA with offices in Baltimore, MD and Wilmington, DE, New Ecology partners with public, private, and nonprofit organizations to advance sustainable, resilient, and healthy communities.
To Apply: Please submit your resume and a cover letter with a thoughtful explanation of why you would be a good fit for this position.
NEI is an Equal Employment Opportunity Employer.
Salary Description
$75,000-$100,000