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Senior Ruby On Rails Developer Jobs in Delaware (NOW HIRING)

Mondo

Lead Software Engineer

Wilmington, DE · On-site

Mondo is seeking a Lead Software Engineer to drive development initiatives across a customer-facing ... Ruby on Rails exposure • PostgreSQL experience • Docker experience • CI/CD pipeline ...

360 IT Professionals

Sr Java Developer

Wilmington, DE

$55.50 - $70.75/hr

This position requires expert design and programming skills with hands-on experience and a mindset ... C/C++, C#, Python, PHP, Ruby, Perl, etc. Experience working with Databases, SQL and Stored ...

SLK America Inc.

.net Senior developer

Wilmington, DE · On-site

$52.75 - $69.75/hr

Senior .NET Full Stack Developer emphasizing backend for platform integrations and payments ... NET Core/8+ for payments processing, including ISO 20022/SWIFT message handling, real-time rails ...

CEDENT

Sr UI Developer

Wilmington, DE · On-site

$58.25 - $75.50/hr

... rail transportation systems. If you have a passion for crafting responsive and user-friendly ... Cloud-Native Development: * Hands-on experience with AWS technologies. Testing Support:

CEDENT

Sr UI Developer (Wilmington, DE)

Wilmington, DE

$58.25 - $75.50/hr

... rail transportation systems. If you have a passion for crafting responsive and user-friendly ... Hands-on experience with AWS technologies. Testing Support: Collaborate with Product Owner and Test ...

Cedent

Sr UI Developer (Wilmington, DE)

Wilmington, DE · On-site

$58.25 - $75.50/hr

... rail transportation systems. If you have a passion for crafting responsive and user-friendly ... Cloud-Native Development: * Hands-on experience with AWS technologies. Testing Support:

Amtrak

Sr Software Engineer - 90404987

Wilmington, DE

$118K - $156K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

By living the Amtrak values, focusing on our capabilities, and actively embracing and fostering ... Railroad Retirement sickness and retirement benefits; and rail pass privileges. Learn more about ...

Amtrak

Sr Software Engineer - 90404987

Wilmington, DE · On-site

$118K - $156K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

By living the Amtrak values, focusing on our capabilities, and actively embracing and fostering ... Railroad Retirement sickness and retirement benefits; and rail pass privileges. Learn more about ...

Amtrak

Data & AI Senior Engineer - 90405345 - Remote

Wilmington, DE · On-site +1

$118K - $156K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... both a hands-on developer and a technical leader, helping to scale Amtrak's data and AI ... Railroad Retirement sickness and retirement benefits; and rail pass privileges. Learn more about ...

Amtrak

Data & AI Senior Engineer - 90405345 - Remote

Wilmington, DE · On-site +1

$118K - $156K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... both a hands-on developer and a technical leader, helping to scale Amtrak's data and AI ... Railroad Retirement sickness and retirement benefits; and rail pass privileges. Learn more about ...

Apolis

Sr Mainframe Developer

Wilmington, DE · On-site

* Job Title: Sr. Mainframe Developer Location: Hybrid (Minimum 3 Days Onsite) - Wilmington, DE 19803 ... The ideal candidate should have strong hands-on development experience in Mainframe technologies ...

Sarian, Inc.

Senior Java Developer

Newark, DE · On-site

$56 - $71.25/hr

Role: Sr. Java Developer Location: Newark, DE Onsite position Fulltime position *****NO C2C ... Good experience in Java spring boot hands on and development. * Exposure frontend technologies like ...

Sarian, Inc.

Senior Java Developer

Newark, DE · On-site

$56 - $71.25/hr

Role: Sr. Java Developer Location: Newark, DE Onsite position Fulltime position JD Skill: Sr. Java ... Good experience in Java spring boot hands on and development. * Exposure frontend technologies like ...

Scout ET

Senior Oracle Developer

Wilmington, DE · On-site

Senior Oracle Developer Location: Wilmington DE Duration: 6 months to a year. Interview Type: Phone ... PL/SQL * Strong on stored procedures * Unix shell scripting * Performance tuning * DW - data ...

Keylent Inc

: Vlocity Sr.Developer

Wilmington, DE · On-site

$121K - $148K/yr

Vlocity Sr. Developer Visa status: U.S. Citizens and those authorized to work in the U.S. are ... Strong hands-on experience with Visualforce, Apex, Triggers, Eclipse IDE, Salesforce Object Query ...

AAA Mid Atlantic

Senior Salesforce Developer

Wilmington, DE · On-site +1

$89K - $143K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The Senior Developer interfaces with multiple levels of people, including Senior Executives and ... Write and update technical cards based on requirements as assigned. * Regularly develop new or ...

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Senior Ruby On Rails Developer information

See Delaware salary details

$95.1K

$157.9K

$198.7K

How much do senior ruby on rails developer jobs pay per year?

As of Aug 19, 2026, the average yearly pay for senior ruby on rails developer in Delaware is $157,860.00, according to ZipRecruiter salary data. Most workers in this role earn between $142,600.00 and $175,700.00 per year, depending on experience, location, and employer.

What is a senior Ruby on Rails developer?

A Senior Ruby on Rails Developer is an experienced software engineer specializing in building, maintaining, and optimizing web applications using the Ruby on Rails framework. They are responsible for writing clean, efficient code, designing application architecture, and ensuring performance and scalability. Senior developers also mentor junior team members, collaborate with cross-functional teams, and implement best practices in development, testing, and deployment. Their role often includes problem-solving, debugging complex issues, and staying updated with the latest industry trends.

What are typical daily responsibilities for a senior Ruby on Rails developer?

As a Senior Ruby On Rails Developer, your day-to-day tasks typically include designing and developing new features, maintaining and optimizing existing codebases, conducting code reviews, and integrating third-party APIs. You will often collaborate closely with product managers, UI/UX designers, and other engineers to ensure smooth project delivery and uphold best practices within the team. Additionally, you may mentor junior developers, troubleshoot complex technical issues, and contribute to architectural decisions. This multifaceted role offers both technical challenge and the opportunity to drive meaningful impact within your organization.

What are the key skills and qualifications needed to thrive as a senior Ruby on Rails developer?

To thrive as a Senior Ruby On Rails Developer, you need deep expertise in Ruby, Rails frameworks, object-oriented programming, and web application architecture, often supported by a bachelor's degree in computer science or related experience. Familiarity with development tools such as Git, PostgreSQL, Docker, RSpec, and cloud platforms, as well as relevant certifications, can enhance your effectiveness. Exceptional problem-solving, leadership, and communication skills help you mentor team members and coordinate with stakeholders. These competencies are critical to creating robust, scalable applications and contributing to both technical excellence and team success.

Are senior Ruby on Rails developers in demand?

Senior Ruby on Rails developers are in high demand due to the framework's popularity for building scalable web applications. Companies seek experienced developers with strong skills in Ruby, Rails, and related tools like Git and PostgreSQL, often offering competitive salaries and remote work options.

How much do senior Ruby on Rails developers make?

Senior Ruby on Rails developers in the US typically earn between $100,000 and $150,000 annually, depending on experience, location, and company size. Higher salaries are common in tech hubs and for those with expertise in related frameworks and cloud deployment. Compensation may also include benefits such as bonuses and stock options.

What is the salary of a Senior Ruby On Rails Developer?

The salary of a Senior Ruby on Rails Developer typically ranges from $90,000 to $150,000 annually, depending on experience, location, and company size. Senior developers with strong skills in Rails, database management, and deployment tools tend to earn at the higher end of this range.

What are the most commonly searched types of Ruby On Rails Developer jobs in Delaware?

The most popular types of Ruby On Rails Developer jobs in Delaware are:

What are popular job titles related to Senior Ruby On Rails Developer jobs in Delaware?

For Senior Ruby On Rails Developer jobs in Delaware, the most frequently searched job titles are:

What job categories do people searching Senior Ruby On Rails Developer jobs in Delaware look for?

The top searched job categories for Senior Ruby On Rails Developer jobs in Delaware are:

What cities in Delaware are hiring for Senior Ruby On Rails Developer jobs?

Cities in Delaware with the most Senior Ruby On Rails Developer job openings:

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Senior Ruby On Rails Developer jobs near you
Infographic showing various Senior Ruby On Rails Developer job openings in Delaware as of August 2026, with employment types broken down into 73% Full Time, and 27% Contract. Highlights an 100% In-person job distribution, with an average salary of $157,860 per year, or $75.9 per hour.

Ruby on Rails

Dellfor Technologies

Delaware City, DE • On-site

$80K/yr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 22 days ago

Job description

Company Description

Dellfor Technologies is founded by software professionals with fresh approach, and ideas empowering clients and partners in meeting the unique challenges created by transforming business needs. Our technical, domain expertise across obust solutions. We strive to prove ourselves from project inception through completion... Our technical, domain expertise across industries and process oriented approach enables clients to develop cost effective and robust solutions. We strive to prove ourselves from project inception through completion...



To succeed in the Dellfor technologies, you need exceptional connections - to the right experts, the right opportunities and the right answers. You'll find Dellfor Technologies right in the center of this ever-changing technological world - uncovering opportunities and connecting possibilities.



As a global provider of IT staffing services, Dellfor Technologies connects the very best IT professionals to great opportunities at leading companies. And we do it every single day - for both temporary and permanent assignments and across virtually all industries. We use our insight, flexibility and expanded resources to anticipate the needs of leading tech companies and help them make exceptional connections with top tech talent.


Job Description
  • 3 years' experience writing applications in Ruby.
  • 3 years' experience using Ruby On Rails, writing Bash scripts.
  • Experience using Apache and/or equivalent web server software.
  • 3-to-5 years' experience with object-oriented programming.
  • Working knowledge of other web frameworks such as mod_perl, embperl, PHP, JSP, ASP, ColdFusion, or equivalents.
  • Knowledge of essentials of Unix server architecture, particularly Linux and Solaris.
  • Experience with most common command line tools.
  • Ability to use compiled and interpreted languages.
  • Ability to analyze hardware disk I/O, CPU utilization, memory swapping, virtual machine threading, and garbage collector tuning.
  • Perform troubleshooting to diagnose application problems, including: compiler linkage errors, run-time bottlenecks, multi-threaded race conditions, and database query optimization.
  • Experience using MySQL and/or equivalent database systems.
  • Solid understanding of ACID database properties, query isolation levels, and SQL coding practice to avoid database deadlock scenarios.
  • Experience with other modern Unix dynamic languages such as Perl, Python, PHP, and Bash and the ability to identify the appropriate tool or language for assigned tasks.

PLUSES

  • Experience developing high-performance APIs.
  • Experience developing in a Service Oriented Architecture.
  • C# .Net required
  • Java and C++ and Perl
  • Objective-C, Swift, or Ruboto experience is a major plus, as mobile application development is part of the product roadmap.
  • User experience with Solaris, Linux, and/ Mac OS X systems and Windows.
  • Understanding of modern networking protocols (TCP/IP addressing and higher network layers).
  • Other requirements
  • Understanding of modern markup and standards (e.g. XML, CSS, xhtml, DOM, Javascript).
  • Excellent oral, written, and communication skills
  • The ability to program using a terminal-based text editor.
  • Understanding of customary source control practices and procedures in a team environment. (SVN and GIT)
  • Experience with Agile software development practices
Qualifications
  • Bachelor's and/or Master's degree in computer science, engineering, or other technical field, or combination of equivalent education and experience.

3+ years of programming experience, with at least 3+ years in a business environment.

Thanks and Regards!

Additional Information

Highlights and benefits

  • We are a registered E verified company
  • Starting salary between $ 60,000 with regular increments
  • Free classroom skill enhancement program
  • Relocation allowance
  • Referral bonus
  • On the job support from experienced professionals in the relative field
  • Travel allowance
  • Insurance- Medical, dental, vision and 401K
  • Health Benefits through Carefirst BCBS (Blue Cross Blue Shield)
  • Company paid Life Insurance

Please respond with your resume. US Citizens and all other parties authorized to work in the US are encouraged to apply.


Job Type: Contract

Salary: $80,000.00 /year

Required education:

  • Bachelor's

Required experience:

  • Developer: 5-12year

Apply