Backend Developer Internship Jobs in Wellesley, MA

Leader Bank is looking for exceptionally dedicated team members to join one of the country’s fastest growing community banks and mortgage lenders. At the time of its founding in 2002, Leader Bank had one branch office, $6.5 million in assets and 7 team members. Since then, the Bank has become one of the most successful banks in Massachusetts with $5 billion in assets, more than 400 team members, 6 branch offices, and annual mortgage originations of over $3 billion.

Exemplary products and an innovative spirit have driven Leader Bank’s rapid growth over the years, and our team members embrace these values. Our mission is to obsess over our clients, make them feel valued, and maintain long-term relationships with them by constantly enhancing our products and processes to always improve our client experience. For our team members, Leader Bank prioritizes competitive compensation and benefits, a healthy work-life balance, and an environment that fosters diversity and inclusion.

Summary

The Full Stack Developer will be a key member of Leader Bank’s Technology Development Team, helping design, build, deploy, and support modern web applications, APIs, integrations, and automation solutions that support the Bank’s continued digital transformation.

This role is ideal for a high-potential developer who combines strong technical fundamentals with curiosity, teamwork, dedication, and a commitment to delivering high-quality software. The successful candidate will work with technologies such as Vue.js, JavaScript, Python, RESTful APIs, relational databases, and AWS cloud services, while also developing practical technical literacy in AI-enabled software development, workflow automation, and applied business solutions. The original role summary identifies Vue.js, Python, AWS, AI automation, no-code/low-code architecture, API-as-a-Service, and other relevant technologies for the position. 

Responsibilities

• Develop, test, deploy, document, and support modern web applications, internal tools, integrations, and APIs.
• Build responsive, intuitive, and user-friendly interfaces using Vue.js, JavaScript, and related front-end technologies.
• Design and develop backend services, business logic, and system integrations using Python.
• Create, consume, and maintain RESTful APIs for internal and external system integrations.
• Work with AWS cloud services to deploy, monitor, secure, and maintain applications.
• Collaborate closely with product managers, business analysts, QA engineers, infrastructure teams, security stakeholders, and other developers.
• Participate actively in Agile ceremonies, sprint planning, refinement discussions, demos, retrospectives, and code reviews.
• Troubleshoot and resolve application issues across development, testing, and production environments with ownership and urgency.
• Write clean, secure, maintainable, and well-documented code that follows development standards and source control best practices.
• Help ensure applications meet expectations for security, performance, scalability, reliability, and maintainability.
• Identify opportunities to improve business processes through automation, workflow optimization, and modern application design.
• Apply practical AI literacy to software development, including responsible use of AI-assisted development tools, LLM concepts, prompt-driven workflows, automation design, and evaluation of AI-enabled business solutions.
• Demonstrate teamwork, dedication, accountability, and commitment to delivering technology solutions that support Leader Bank’s clients, team members, and business goals.
   

Qualifications 

• Bachelor’s degree in Computer Science, Engineering, Information Systems, a related field, or equivalent practical experience.
• 1–2 years of professional software application development experience, internship experience, or demonstrable hands-on project experience.
• Experience developing applications using JavaScript, Vue.js, React, PHP, Python, or comparable modern technologies.
• Experience designing, developing, and integrating RESTful APIs.
• Experience working with relational databases such as PostgreSQL, MySQL, or MariaDB.
• Good understanding of Git, source control best practices, pull request workflows, code reviews, and CI/CD concepts.
• Basic understanding of cloud-native application development principles.
• Familiarity with Agile/Scrum software development methodologies.
• Familiarity with AWS services such as S3, RDS, Bedrock, CloudWatch, Lambda, or comparable cloud services.
• Foundational understanding of AI and LLM technologies, especially their application in workflow automation, developer productivity, business process improvement, and applied software development.
• Strong analytical thinking, problem-solving ability, attention to detail, written communication skills, and verbal communication skills.
• Willingness to learn new technologies and apply them thoughtfully in a regulated financial services environment.
• A collaborative team-first mindset, with the ability to communicate clearly and work effectively across technical and business teams.
• Dedication to quality, reliability, and continuous improvement.
• Commitment to learning, growing, and staying current with modern software development practices.
• Accountability and follow-through in completing work, resolving issues, and supporting production systems.
• Curiosity about emerging technologies, including applied AI, automation, and cloud-based development.
• Professional judgment, especially when working with secure systems, client data, and business-critical applications.
• A positive, humble, and solutions-oriented approach to challenges.
• Strong ownership of assigned work while remaining open to feedback, coaching, and code review.

Preferred Technical Exposure

Area

Examples

Front End

Vue.js, JavaScript, React, HTML, CSS

Back End

Python, PHP, RESTful APIs, integration services

Data

PostgreSQL, MySQL, MariaDB, SQL fundamentals

Cloud and DevOps

AWS S3, RDS, Lambda, CloudWatch, Git, CI/CD concepts

AI and Automation

AWS Bedrock, AI-assisted development, LLM concepts, workflow automation

This job description is not intended to be an exhaustive list of all duties, responsibilities, or qualifications. Management reserves the right to modify, add, or remove duties and to assign other responsibilities as necessary.

Employees are expected to communicate professionally, work collaboratively, demonstrate accountability, and adhere to organizational policies and confidentiality standards.

Leader Bank offers an excellent compensation and benefits package including 401k plan with corporate match, medical and dental insurance, and the opportunity to work for a fast growing, local organization.

Leader Bank, N.A. is an Equal Opportunity and Affirmative Action employer and does not discriminate on the basis of race, color, religion, age, gender, marital status, sexual orientation, national origin, disability, military status, veteran status, or any other protected class. 

The base salary range below represents the low and high end of the Leader Bank salary range for this position. Actual salaries will vary and may be above or below the range based on various factors including but not limited to location, experience, and performance.

Salary Minimum: $65,854.26   - Salary Max: $82,317.57             

The range listed is just one component of Leader Bank’s total compensation package for team members. Other rewards may include annual bonuses, commissions, short- and long-term incentives, and program-specific awards. In addition, Leader Bank provides a variety of benefits to eligible team members, including health insurance coverage, a team member wellness program, life and disability insurance, a retirement savings plan, paid holidays and paid time off and vacation.

Leader Bank, N.A. is an Equal Opportunity and Affirmative Action employer and does not discriminate on the basis of race, color, religion, age, gender, marital status, sexual orientation, national origin, disability, military status, veteran status or any other protected class.

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