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Mid Level Frontend Developer Jobs in Delaware (NOW HIRING)

Net Orbit

Java Developer(mid-level)

Wilmington, DE · On-site

$49.50 - $64/hr

Sr. Java Developer Wilmington, DE/NYC/Atlanta, GA • Strong Java programming skills • 5-9 years practical software development experience • Robust object-oriented design pattern knowledge and ...

Actalent

Environmental Engineer

Newark, DE · On-site

Environmental Engineer (Mid-Level Project Manager) This mid-level Environmental Engineer position focuses on managing and supporting Phase I and Phase II environmental site assessment and remediation ...

Actalent

Environmental Engineer

Newark, DE · On-site

Environmental Engineer (Mid-Level Project Manager) This mid-level Environmental Engineer position focuses on managing and supporting Phase I and Phase II environmental site assessment and remediation ...

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All JobsMid Level Frontend Developer JobsMid Level Frontend Developer Jobs in Delaware

Mid Level Frontend Developer information

See Delaware salary details

$42.5K

$110.5K

$155.6K

How much do mid level frontend developer jobs pay per year?

As of Aug 31, 2026, the average yearly pay for mid level frontend developer in Delaware is $110,508.00, according to ZipRecruiter salary data. Most workers in this role earn between $104,100.00 and $121,100.00 per year, depending on experience, location, and employer.

What is a mid level frontend developer?

Mid Level Frontend Developers are professionals with a few years of experience building and maintaining the user-facing parts of websites or web applications. They are proficient in HTML, CSS, and JavaScript, and often work with frameworks like React, Angular, or Vue.js. Mid level developers are capable of taking on more complex features and tasks independently, collaborating with designers and backend developers, and contributing to code reviews and project planning. They bridge the gap between junior and senior roles by demonstrating problem-solving skills, code quality, and a good understanding of best practices.

What skills and qualifications are needed to thrive as a mid level frontend developer?

To thrive as a Mid Level Frontend Developer, you need strong proficiency in HTML, CSS, JavaScript, and modern frontend frameworks like React or Angular, along with a relevant degree or equivalent experience. Familiarity with version control systems (such as Git), build tools, and testing frameworks is typically required. Effective problem-solving, attention to detail, and clear communication are essential soft skills for collaborating with designers and backend developers. These skills ensure the delivery of high-quality, user-friendly web applications that meet both technical and business requirements.

What are common challenges a mid level frontend developer faces when integrating with backend services, and how can these be managed?

Mid Level Frontend Developers often encounter challenges such as handling inconsistent API responses, managing asynchronous data flows, and ensuring seamless communication between the frontend and backend. To address these issues, it's important to collaborate closely with backend developers, maintain clear API documentation, and use tools like Postman or Swagger for testing. Additionally, implementing robust error handling and utilizing state management libraries can help ensure a smooth user experience and efficient debugging.

Are mid level front end developers still in demand?

Mid level front end developers are currently in strong demand due to ongoing digital transformation and the need for user-friendly interfaces. Skills in JavaScript frameworks like React or Angular, along with knowledge of HTML and CSS, remain highly valued by employers across various industries.

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

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

What cities in Delaware are hiring for Mid Level Frontend Developer jobs?

Cities in Delaware with the most Mid Level Frontend Developer job openings:

Mid Level Frontend Developer jobs near you
Infographic showing various Mid Level Frontend Developer job openings in Delaware as of August 2026, with employment types broken down into 73% Full Time, 19% Part Time, 1% Temporary, 6% Contract, and 1% Nights. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $110,508 per year, or $53.1 per hour.

Full Stack Java Developer (Wilmington, DE)

MAS Global Consulting

Wilmington, DE • On-site

$51 - $65.75/hr

Full-time

Posted 13 days ago

Job description

Location: Wilmington, DE
Type: Full-Time, On-Site
Who We Are
At MAS Global Consulting, we are a premium digital engineering partner trusted by innovative startups and Fortune 100 companies, delivering high-impact solutions through agile delivery, deep technical expertise, and a strong people-first culture across the Americas.
We build long-term partnerships, not just software. MAS means �more� in Spanish, and that mindset drives our commitment to greater opportunity, inclusion, and impact.
Founded by a Latina engineer from Medell�n and headquartered in Tampa, Florida, MAS Global Consulting is a 100% Hispanic and woman-owned company, recognized as a Great Place to Work and one of the Fastest-Growing Companies in the US.
Who You Are
We are looking for a Senior Java Full Stack Developer to join our growing engineering team. In this full-time, on-site role, you will design and build robust, scalable backend systems leveraging Java, Apache Kafka, and AWS. You will collaborate closely with cross-functional teams to deliver high-impact solutions for enterprise clients.
What You'll Do
  • Design, develop, and maintain high-performance backend services and distributed systems using Java.
  • Architect and implement event-driven solutions using Apache Kafka, ensuring reliability, scalability, and low latency.
  • Deploy, configure, and manage cloud infrastructure and services on AWS (e.g., EC2, ECS, Lambda, S3, RDS, SQS).
  • Collaborate with stakeholders to gather requirements and translate them into scalable technical solutions.
  • Develop and optimize RESTful APIs and backend application functionalities for high performance and responsiveness.
  • Write and maintain automated tests (unit, integration, E2E) and ensure code quality through code reviews.
  • Apply security best practices, including authentication and authorization mechanisms, to protect backend systems.
  • Troubleshoot and resolve production issues, ensuring minimal downtime and operational stability.
  • Mentor junior and mid-level engineers, promoting engineering best practices and a culture of continuous improvement.
  • Collaborate with front-end, DevOps, and QA teams to ensure seamless integration and delivery of solutions.

What You Bring
  • Bachelor's degree in Computer Science, Software Engineering, or a related field.
  • 8+ years of professional experience in backend software development.
  • Solid understanding of distributed systems, event-driven architecture, and messaging patterns.
  • Experience with version control systems (e.g., Git) and agile development methodologies.
  • Strong problem-solving skills and a track record of resolving complex production issues.
  • Excellent communication skills and ability to work effectively in cross-functional teams.

Demonstrate strong, hands-on expertise in the following core areas:
Java: Core language proficiency (Java 11+), OOP, design patterns, multithreading, and performance optimization.
Amazon Web Services (AWS): Cloud infrastructure design and operations, including EC2, ECS, Lambda, S3, RDS, SQS, and strong JVM internals and concurrency knowledge.
Additionally:
Front-end Exposure: Hands-on experience with React or Angular, contributing to fullstack development and integration with backend services.
Nice to Have
  • Spring Boot & Microservices: Experience building and deploying production-grade microservices using Spring Boot, Spring Cloud, and related frameworks (Eureka, API Gateway, Circuit Breaker).
  • Apache Kafka: Event-driven architecture, producer/consumer configuration, topic partitioning, schema registry, and Kafka Streams or similar.
  • Containerization & Orchestration: Familiarity with Docker and Kubernetes (EKS or similar).
  • Observability: Experience with monitoring and tracing tools.
  • CI/CD: Experience with Jenkins, GitHub Actions, or similar pipelines for automated testing and deployment.

Apply