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Backend Engineer Jobs in Delaware (NOW HIRING)

Role Overview The Senior Backend Engineer will be responsible for designing, developing, and maintaining the backend systems that support our applications and services. This role requires a deep ...

The Lead Software Engineer II - Backend plays an important role in building and enhancing backend engineering solutions across the organization. This role focuses on designing and delivering reliable ...

Sr. Java Backend Developer

Wilmington, DE · On-site

$49 - $63.50/hr

Java Backend Developer • Java Developer - Preferable with Java 1.8 (java 8 features) experience • Advanced knowledge and experience developing and working with relational databases such as Sybase ...

Android Developer - Onsite

Wilmington, DE · On-site

$54 - $71/hr

Work with backend engineers to integrate mobile applications with backend services. * Troubleshoot and fix application bugs and issues. * Contribute to code reviews and provide constructive feedback.

Sr. Android Developer

Wilmington, DE · On-site

$56.25 - $71.25/hr

Work with backend engineers to integrate mobile applications with backend services. * Troubleshoot and fix application bugs and issues. * Contribute to code reviews and provide constructive feedback.

... engineer. * Advanced knowledge of the Hadoop ecosystem and its components. * In-depth knowledge of Hive, HBase, and Pig. * Familiarity with MapReduce and Pig Latin Scripts. * Knowledge of back-end ...

Strong backend engineering experience with Node.js * Experience building APIs, microservices, distributed systems, and event-driven architectures/CDC workflows * Experience working within AWS cloud ...

New

Android Developer

Wilmington, DE · On-site

$54 - $71/hr

Work with backend engineers to integrate mobile applications with backend services * Troubleshoot and fix application bugs and issues * Contribute to code reviews and provide constructive feedback

Java Developer(mid-level)

Wilmington, DE · On-site

$49.50 - $64/hr

Java Backend Developer • Java Developer - Preferable with Java 1.8 (java 8 features) experience • Advanced knowledge and experience developing and working with relational databases such as Sybase ...

Java FSD

Wilmington, DE · On-site

$49.50 - $64/hr

An FSD/FSPE has an "end to end product" mindset - design, implementation, testing and deployment, and adds an additional skill (s) on top of traditional front/back-end developer role * Design and ...

Java FSD

Wilmington, DE · On-site

$49.50 - $64/hr

Java FSD with AWS An FSD/FSPE has an "end to end product" mindset - design, implementation, testing and deployment, and adds an additional skill (s) on top of traditional front/back-end developer ...

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Showing results 1-20

Backend Engineer information

See Delaware salary details

$60.6K

$147.8K

$199.2K

How much do backend engineer jobs pay per year?

As of May 29, 2026, the average yearly pay for backend engineer in Delaware is $147,789.00, according to ZipRecruiter salary data. Most workers in this role earn between $124,100.00 and $172,100.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Backend Engineer, and why are they important?

To thrive as a Backend Engineer, you need strong programming skills in languages like Java, Python, or Node.js, a solid understanding of algorithms, and experience with databases, typically supported by a degree in computer science or related field. Familiarity with tools such as RESTful APIs, cloud platforms (e.g., AWS, Azure), version control systems (like Git), and containerization technologies (Docker, Kubernetes) is common. Problem-solving ability, attention to detail, and effective communication are vital soft skills for this role. These skills and qualities are essential for building robust, scalable systems and collaborating efficiently within development teams.

What are some common challenges Backend Engineers face when integrating new technologies into existing systems?

Backend Engineers often encounter challenges when integrating new technologies, such as ensuring compatibility with legacy systems, maintaining data consistency, and minimizing service disruptions during deployment. They must carefully plan migrations, coordinate with frontend and DevOps teams, and implement thorough testing to avoid introducing bugs or security vulnerabilities. Effective communication and documentation are key to overcoming these challenges and ensuring a smooth transition.

What are Backend Engineers?

Backend Engineers are software developers who focus on building and maintaining the server-side logic, databases, and APIs that power web and mobile applications. They ensure that the data requested by the frontend systems is delivered efficiently and securely. Their work involves writing code in languages like Python, Java, or Node.js, integrating with databases, and optimizing the overall performance of applications. Backend Engineers also play a crucial role in ensuring data integrity and implementing security best practices.

What is the difference between Backend Engineer vs Software Developer?

AspectBackend EngineerSoftware Developer
Primary FocusDesigning, building, and maintaining server-side applications and databasesDeveloping software across various layers, including frontend and backend
Skills & CertificationsProficiency in server-side languages (e.g., Java, Python), databases, APIsProficiency in multiple programming languages, software design, and sometimes frontend skills
Work EnvironmentTypically in backend teams, working on server infrastructure and APIsCan work on full-stack or specific areas; broader scope
Industry UsageCommon in tech companies, startups, and enterprises focusing on backend systemsWidespread across all software development sectors

While both roles involve coding and software development, Backend Engineers specialize in server-side logic, databases, and APIs, whereas Software Developers may work on both frontend and backend components. The roles often overlap, but Backend Engineers focus more on the infrastructure that powers applications.

More about Backend Engineer jobs
What are the most commonly searched types of Backend Engineer jobs in Delaware? The most popular types of Backend Engineer jobs in Delaware are:
What are popular job titles related to Backend Engineer jobs in Delaware? For Backend Engineer jobs in Delaware, the most frequently searched job titles are:
What cities in Delaware are hiring for Backend Engineer jobs? Cities in Delaware with the most Backend Engineer job openings:
What are popular job titles related to Backend Engineer jobs in DE? For Backend Engineer jobs in DE, the most frequently searched job titles are:
Infographic showing various Backend Engineer job openings in Delaware as of May 2026, with employment types broken down into 88% Full Time, 7% Part Time, and 5% Contract. Highlights an 90% Physical, 4% Hybrid, and 6% Remote job distribution, with an average salary of $147,789 per year, or $71.1 per hour.

Senior Backend Engineer - AI Agent

Athenago

Wilmington, DE

Full-time

Posted 2 days ago


Job description

At Athena, we empower possibility through transformative delegation. True leaders reflect on what they want and map the path to get there. We clear the way by pairing exceptional Executive Assistants with our driven clients and ensuring both receive ongoing support throughout the journey. The result is 10x more leverage, more time, and a greater impact on our clients' work and lives.

We are on a mission to build the best delegation platform in the world. We believe that the Human+AI combination will provide a superior experience to delegate complex tasks by combining the strengths of highly trained assistants leveraging highly trained AI agents.

Role Overview

The Senior Backend Engineer will be responsible for designing, developing, and maintaining the backend systems that support our applications and services. This role requires a deep understanding of backend technologies, databases, scalable system architecture, and AI agentic systems. This engineer will play a key role in building Athena's AI agentic systems and the engineering harnesses that support the system development, evaluation, reliability, and continuous improvement. The ideal candidate will have strong problem-solving skills and experience working in a collaborative, agile environment.

Responsibilities
  • Design and Develop Backend Systems: Architect, code, and maintain backend infrastructure using modern technologies and best practices to ensure high performance, security, and scalability.

  • Build AI Agentic Systems and Harnesses: Design and develop backend services, orchestration layers, and supporting engineering harnesses for AI agentic systems, including tooling for evaluation, testing, monitoring, and iterative improvement.

  • Collaborate with Cross-Functional Teams: Work closely with frontend developers, product managers, and other stakeholders to define requirements, design solutions, and deliver high-quality software.

  • Optimize and Improve Existing Systems: Continuously monitor and optimize backend performance. Identify bottlenecks and implement improvements to enhance efficiency, scalability, and the reliability of AI-powered systems.

  • Ensure Code Quality: Write clean, maintainable, and efficient code. Conduct code reviews and provide constructive feedback to peers.

  • Implement Security Best Practices: Ensure backend systems are secure and comply with industry standards and regulations.

  • Mentor Junior Engineers: Provide guidance and mentorship to junior team members to help them grow their technical skills and career.

Qualifications
  • Experience: 5+ years of experience in backend development, with a strong focus on building scalable and robust systems. Proficiency in languages such as Python or Node.js. Experience building AI-powered products, agentic systems, or engineering tooling / harnesses is strongly preferred.

  • Technical Skills: Deep understanding of databases (SQL and NoSQL), RESTful APIs, microservices architecture, and cloud platforms (AWS, Azure, or GCP). Familiarity with LLM-based systems, orchestration frameworks, evaluation pipelines, or related AI infrastructure is a plus.

  • Problem-Solving: Strong analytical and problem-solving skills to identify issues and implement effective solutions.

  • Collaboration: Excellent teamwork and communication skills to work effectively with cross-functional teams.

  • Adaptability: Ability to thrive in a fast-paced, dynamic environment and manage multiple priorities.

  • Education: Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent work experience.

Equal Opportunity Employer: At Athena, we are deeply committed to fostering an inclusive and diverse workplace environment. We believe that diversity enriches our organization, enhances creativity, and drives innovation. We are dedicated to providing equal employment opportunities to all individuals regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or any other characteristic protected by applicable laws. We strive to create an environment where everyone feels valued, respected, and empowered to contribute their unique perspectives and talents. We actively promote diversity and inclusion through our hiring practices, employee development initiatives, and company culture, recognizing that it is essential for our success as a company and as a community.

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