Demo

Sr. App Dev

Market Street Talent
Portland, ME Contractor
POSTED ON 9/10/2026
AVAILABLE BEFORE 10/11/2026

Could you be a good fit?

We are looking for a highly skilled Senior Software Developer to join the team of our exceptional client. This role focuses on designing, developing, and supporting a complex, globally distributed platform that powers critical business operations and customer-facing services.

This position requires a senior-level engineer who is comfortable leading technical initiatives, architecting scalable cloud solutions, and driving projects from design through deployment. The ideal candidate combines strong software engineering expertise with leadership, problem-solving, and modern AI-enabled development practices.


Benefits

• Health, Vision, Dental, 401k


What will your day look like?

As a Senior Software Developer, you will:

• Design, develop, test, and maintain enterprise applications and distributed systems

• Partner with Product Owners and technical teams to translate business requirements into scalable technical solutions

• Develop solution architectures that seamlessly integrate with upstream and downstream systems

• Build and maintain RESTful APIs and cloud-native applications

• Develop high-quality code, automated tests, and technical documentation throughout the software development lifecycle

• Lead technical initiatives and help drive projects to successful completion while meeting stakeholder expectations

• Support and troubleshoot production applications, identifying and resolving performance, reliability, and scalability issues

• Monitor application health and proactively address technical debt, security concerns, and system stability challenges

• Develop and maintain automation scripts, deployment pipelines, and operational tooling

• Work closely with development and support teams to ensure customer needs and business objectives are met

• Leverage AI-assisted development tools and practices to improve delivery speed, code quality, testing, and troubleshooting

• Participate in Agile ceremonies and contribute to continuous improvement initiatives

• Serve as a technical steward for applications, ensuring long-term maintainability and operational excellence


You will be a good fit for this role if you have:

• 7 years of software development experience supporting both new and legacy applications

• Bachelor's degree in Computer Science or equivalent experience

• Strong experience with Java, Kotlin, or similar object-oriented programming languages

• Experience with Python and other modern development languages

• Deep understanding of object-oriented design principles and Domain-Driven Design (DDD)

• Experience developing and consuming RESTful APIs

• Strong experience with AWS cloud services, including serverless technologies

• Hands-on experience with services such as AWS Lambda, S3, SQS, SNS, and API Gateway

• Experience working with relational databases including PostgreSQL, MySQL, or similar platforms

• Experience with NoSQL database technologies

• Experience with GitHub, GitHub Actions, Jenkins, Maven, or similar CI/CD tools

• Strong knowledge of secure coding practices and software design principles

• Experience translating business requirements into scalable technical solutions

• Experience creating and executing unit tests and supporting software quality initiatives

• Proven ability to lead technical modules, projects, or workstreams

• Experience working within Agile Scrum teams

• Excellent troubleshooting, analytical, and problem-solving skills

• Strong communication skills with the ability to explain technical concepts to non-technical audiences

• Demonstrated ability to make data-driven decisions


Nice-to-Haves

• Experience supporting laboratory, healthcare, diagnostic, or highly regulated environments

• Experience building distributed cloud platforms at enterprise scale

• Experience with AI-enabled software development practices and tools such as GitHub Copilot, Claude, AI-assisted testing, or AI-powered code review

• Experience with Site Reliability Engineering (SRE) principles

• Familiarity with cloud-native observability and monitoring tools

• Experience leading initiatives focused on technical debt reduction and process improvement

• Experience with Google Cloud Platform cloud technologies


About Market Street Talent

Market Street Talent is a specialized staffing and consulting firm focused on IT and technology positions. Our deep industry knowledge allows us to match exceptional candidates with organizations where they can thrive and make an immediate impact.

Our Vision: To promote and foster the growth of information technology (IT) in our world—one candidate, one client, one community at a time.

Our Goal: To guide clients and candidates through the placement process and build long-term, successful relationships.

Our Culture: At MST, we value excellence, respect, and empathy in everything we do.


Sound like you?

Ready to architect, build, and support enterprise-scale cloud solutions while helping shape the future of modern software delivery? Click “Apply Now” and let’s start the conversation!

Hourly Wage Estimation for Sr. App Dev in Portland, ME
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