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Mid Backend Developer Jobs in Connecticut (NOW HIRING)

Mid Level (3-5 years experience) * Senior Level (5-15 years experience) * SDET (3+ years experience ... Tool/MCP calls and backend integrations (e.g., Salesforce and internal enterprise applications)

CyberArk Senior Consultant

Stamford, CT · On-site

$58 - $76.75/hr

... and backend technologies. • Experience designing, developing, deploying, implementing, or ... mid-level developers, leading code reviews, and providing development feedback. • Experience ...

CyberArk Senior Consultant

Hartford, CT · On-site

$55 - $72.75/hr

... and backend technologies. • Experience designing, developing, deploying, implementing, or ... mid-level developers, leading code reviews, and providing development feedback. • Experience ...

Experience mentoring junior or mid-level developers, leading code reviews, and providing ... Experience with at least one backend technology stack: Node.js, Python (Django or Flask), or Java ...

Experience mentoring junior or mid-level developers, leading code reviews, and providing ... Experience with at least one backend technology stack: Node.js, Python (Django or Flask), or Java ...

Mid Backend Developer information

What is the difference between Mid Backend Developer vs Backend Developer?

AspectMid Backend DeveloperBackend Developer
Experience LevelMid-level (2-4 years)Entry to Mid-level (0-3 years)
Skills & CertificationsProficiency in server-side languages, databases, APIs; often familiar with cloud servicesBasic to intermediate backend skills, some familiarity with similar technologies
Work EnvironmentCollaborates on complex projects, often in teams with frontend and DevOpsWorks on foundational backend tasks, may be part of smaller teams or solo projects
Industry UsageCommon in tech companies, startups, and enterprise environmentsWidespread across various industries, including tech, e-commerce, and finance

The Mid Backend Developer typically has more experience and handles more complex backend systems compared to a Backend Developer. While both roles require similar foundational skills, the mid-level position involves greater responsibility, problem-solving, and collaboration on larger projects.

What are Mid Backend Developers?

Mid Backend Developers are software engineers with intermediate experience who focus on building, maintaining, and optimizing the server-side components of web or mobile applications. They typically work with databases, APIs, server logic, and integration with front-end systems. Mid-level developers have a solid understanding of programming languages such as Java, Python, Node.js, or Ruby and are expected to contribute to code reviews, troubleshoot issues, and implement new features under minimal supervision. Their role bridges the gap between junior developers, who need more guidance, and senior developers, who handle architecture and high-level decisions.

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

To excel as a Mid Backend Developer, you need strong programming skills in languages such as Java, Python, or Node.js, along with a solid understanding of databases and API design, typically backed by a bachelor’s degree in computer science or related field. Familiarity with tools and systems like Git, RESTful APIs, Docker, and cloud platforms (e.g., AWS, Azure) is usually required. Problem-solving abilities, effective communication, and teamwork are crucial soft skills that set high performers apart. These competencies ensure efficient development, maintainability, and seamless integration of backend services in dynamic technical environments.

What are some typical challenges a Mid Backend Developer might face when integrating new technologies into existing systems?

As a Mid Backend Developer, one common challenge is ensuring that new technologies or frameworks integrate smoothly with legacy systems without disrupting current operations. This often involves understanding both the old and new codebases, data migration, and dealing with compatibility issues. Collaborating closely with frontend developers, DevOps, and QA teams is essential to address potential bottlenecks and maintain performance. Additionally, thorough testing and documentation are crucial to ensure long-term stability and maintainability.
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Java Software Developer (Mid-Senior Level)

Java Software Developer (Mid-Senior Level)

Interactive Brokers

Greenwich, CT • Hybrid

$64.25 - $82/hr

Other

Posted 15 days ago


Job description

This is a hybrid role (3 days in the office/2 days remote).

About your team: 

Our clearing applications group works on back-end, internal systems and client-facing applications. These applications support Funds and banking software handling client cash, brokerage operations, securities borrowing and lending, clearing operations including regulatory reporting, trade settlement and reconciliation, corporate action processing, client statements, reference data systems, and IPO processing, to name just a few. In addition, we also continuously work on our fully integrated internal development and operational tools used to handle functions such as software releases, job scheduling, service location and security frameworks, and build management tools. We are looking to continuously improve our intelligent, automated systems to provide the world-class solutions and systems our brokerage customers expect. 

What will be your responsibilities within IBKR: 

  • Creating software applications or systems to meet user needs while considering functionality, reliability, and scalability.
  • Utilizing Java programming languages to write clean, maintainable, and efficient code and develop back-end services and algorithms
  • Conducting thorough testing to identify bugs or issues in the software and resolving them to ensure high-quality deliverables.
  • Working closely with other developers, designers, product managers, and stakeholders to understand project requirements and specifications.
  • Reviewing code written by peers for quality assurance and providing constructive feedback.
  • Updating and modifying existing applications to improve efficiency, enhance functionality, and fix vulnerabilities.
  • Creating and maintaining detailed documentation for code, software designs, and development processes for future reference.
  • Keeping up with industry best practices, emerging technologies, and programming languages to refine skills and improve development processes.
  • Contributing to project timelines, estimates, and resource allocations to ensure deadlines are met and goals are achieved.
  • Assisting users with software-related issues and providing training sessions when needed.
  • Have a desire to learn about and understand financial instruments and concepts.

Skills Required:

  • Bachelor's or master's degree in computer science or related degree.
  • 5+ years of Java experience or similar object-oriented language experience.
  • Strong knowledge of object-oriented concepts, n-tier applications
  • Knowledge of relational database concepts (Oracle is a plus).
  • Hands-on experience with server-side programming, ideally with Java/JEE or C++, message-oriented systems, RESTful web services, and microservices.
  • Desire to challenge the status quo, create simple, elegant solutions to complex problems, and follow solutions from development through production release, acceptance testing, and support.
  • Experience with configuration and deployment on application servers, ideally JBoss.
  • Knowledge of financial instruments is a plus but is not required. Otherwise, you have a desire to learn about and understand financial instruments and concepts.

To be successful in this position, you should be:

  • Detail-oriented self-starter who is comfortable working both independently and collaborating with your team.
  • Passionate about writing clean, well-tested, and maintainable code.
  • You should have a high level of comfort in an environment of continuous integration and deployment.
  • Optimizing, improving, and supporting existing algorithms and systems to reach the goal of highly automated robust systems with full test coverage requiring minimal operational oversight.
  • Creating independent automated risk controls and checks to ensure that systems are performing as expected and catching potential errors as soon as possible.
  • Developing message-oriented systems, batch processing applications, and web application-based management consoles.
  • Continuous learner and will use and/or learn the right language and technology to solve a problem.