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Senior Software Engineer Jobs in Maine (NOW HIRING)

EnviroLogix

Software Engineer

Portland, ME · On-site

They are seeking a Software Engineer to develop and maintain applications for their QuickScan platform, focusing on software development, integration with cloud systems, and customer support.

Harris

Software Engineer II

Mexico, ME · On-site

Job Summary The Software Engineer II designs, develops, tests, implements, and supports enterprise healthcare applications running on the IBM i platform. This position works with RPG, CL, Db2 for i ...

EnviroLogix

Software Engineer

Portland, ME · On-site

They are seeking a Software Engineer to develop and maintain applications for their QuickScan platform, collaborating with cross-functional teams to enhance product features and support integration ...

NinjaOne

About the role We are looking for a Senior Full Stack Software Engineer to join our Emerging Products team. This role is primarily backend-focused Java/Kotlin, with working proficiency in React ...

New

Idexx

Software Development Manager

Westbrook, ME · On-site

$135 - $165/hr

Software Development Manager,** you will manage all activities for the Zookeepers engineering team ... Report results to peer groups and senior management. Prepare analyses as needed to highlight issues ...

New

HTS Engineering Ltd

Senior Sales Engineer

Portland, ME · On-site

... Senior Sales Engineers. By joining HTS, you will be challenged to adapt quickly as you dive into ... Are proficient with all basic MS software, and have the ability to learn new desktop and web based ...

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Senior Software Engineer information

See Maine salary details

$73.1K

$138.7K

$185.9K

How much do senior software engineer jobs pay per year?

As of Aug 19, 2026, the average yearly pay for senior software engineer in Maine is $138,735.00, according to ZipRecruiter salary data. Most workers in this role earn between $118,600.00 and $156,400.00 per year, depending on experience, location, and employer.

What is a senior software engineer?

A senior software engineer designs, codes, tests, and maintains computer software. While these are your primary responsibilities as a senior software engineer, you may also have supervisory duties. These include overseeing a team of junior software engineers or developers. The senior software engineer title is sometimes used interchangeably with senior developer, and positions for both may share similar job duties and responsibilities. In general, software engineers are distinguished from developers in that software engineers apply engineering principles to software development.

What are the key skills and qualifications needed to thrive as a senior software engineer, and why are they important?

To thrive as a Senior Software Engineer, you need advanced programming skills, deep understanding of software architecture, and several years of experience in software development, often supported by a relevant degree. Familiarity with tools like Git, CI/CD pipelines, cloud platforms, and expertise in technologies such as Java, Python, or JavaScript are typically required. Leadership, problem-solving, and effective communication are crucial soft skills for mentoring teams and collaborating across departments. These skills ensure the delivery of robust, scalable solutions and drive successful project outcomes in complex technical environments.

What are some common challenges senior software engineers face when mentoring junior team members?

Senior Software Engineers often mentor junior colleagues, which can be incredibly rewarding but also presents challenges. Balancing mentorship with project deadlines can be demanding, as it requires strong time management and communication skills. Additionally, adapting explanations to different learning styles and levels of experience can be tricky. However, effective mentorship helps build a stronger team and can lead to enhanced leadership opportunities for the senior engineer.

What is the difference between Senior Software Engineer vs Software Developer?

AspectSenior Software EngineerSoftware Developer
CredentialsBachelor's or higher in CS or related field; experience often 5+ yearsBachelor's in CS or related field; entry to mid-level experience
Work EnvironmentDesigning complex systems, leading projects, mentoringWriting code, developing features, debugging
Industry UsageUsed across tech companies, startups, enterpriseCommon in software firms, startups, freelance work
Search & ComparisonOften compared for experience level, responsibilitiesCompared for entry-level to mid-level roles

The main difference between a Senior Software Engineer and a Software Developer lies in experience, responsibilities, and scope. Senior Software Engineers typically have more experience, lead projects, and mentor others, while Software Developers focus on coding and feature development. Both roles are essential in tech companies, but the Senior Software Engineer position involves higher-level planning and leadership.

What does a senior software engineer do?

A senior software engineer designs, develops, and maintains software applications, often leading projects and mentoring junior team members. They analyze requirements, write code, perform testing, and collaborate with cross-functional teams to ensure quality and efficiency. Proficiency in programming languages, problem-solving skills, and experience with development tools are essential for this role.
More about Senior Software Engineer jobs

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For Senior Software Engineer jobs in Maine, the most frequently searched job titles are:

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Senior Software Engineer jobs near you
Infographic showing various Senior Software Engineer job openings in Maine as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 9% Part Time, 3% Temporary, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $138,735 per year, or $66.7 per hour.

Staff Software Development Engineer - Agentic Applications and Experiences

WEX

Portland, ME • On-site

$140K - $173K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 19 days ago

WEX Inc. rating

7.3

Company rating: 7.3 out of 10

Based on 21 frontline employees who took The Breakroom Quiz

13th of 21 rated payment service providers

Job description

The WEX Fleet Services teamwhich owns the Over the Road experiences is transforming the future of fleet payments by building agentic, scalable solutions that power WEX's industry-leading fuel card platform. We design and develop new capabilities that enable delightful experiences for both internal and external customers, creating the foundation for new products, services, and business opportunities.

We are looking for a passionate Senior Software Development Engineer who enjoys solving complex problems, passionate about learning and experimenting, building innovative solutions, and collaborating with a talented engineering team. In this role, you will play a key part in designing, developing, and enhancing agentic solutions in a cloud-native environment using industry-leading AI tools/platforms, Java, AWS, Kafka event streaming, Elasticsearch, containerization, and API-driven architectures.

This is an opportunity to join an agile, collaborative team where engineers have ownership, make meaningful technical contributions, and deliver solutions that directly impact WEX's customers and business growth.

How You'll Make an Impact

  • Design, develop, and deliver delightful product experiences that are powered by Agentic capabilities, scalable, reliable software solutions using modern technologies such as Java, Kafka, Elasticsearch, and cloud-native platforms.

  • Contribute to architecture and design decisions that support highly available, secure, and scalable systems.

  • Build and maintain clean, efficient, well-tested, and maintainable code.

  • Develop and optimize RESTful APIs and backend services.

  • Participate in code reviews, technical discussions, and collaborative problem-solving sessions.

  • Troubleshoot, debug, and resolve complex technical challenges.

  • Work across technology stacks and quickly adapt to new tools and frameworks.

  • Stay current with emerging technologies and industry best practices to continuously improve engineering practices.

  • Ensure operational excellence and best customer experience for all the products and systems owned by the team.

Experience You'll Bring

  • Bachelor's degree in Computer Science, Engineering, or a related technical field.

  • 7+ years of software engineering experience designing, developing, and supporting enterprise-scale applications.

  • Strong experience building cloud-based applications and infrastructure using infrastructure-as-code practices.

  • Proficiency with event streaming platforms such as Kafka.

  • Experience with Elasticsearch, including indexing strategies, query optimization, and data analysis.

  • Experience working with cloud platforms such as AWS.

  • Strong understanding of software engineering principles, including data structures, algorithms, object-oriented design, scalability, availability, and reliability.

  • Strong problem-solving skills with the ability to analyze complex technical challenges.

  • Excellent written and verbal communication skills with a collaborative mindset.

Preferred Qualifications

  • Master's degree in Computer Science, Software Engineering, or a related field.

  • 8+ years of software engineering experience.

  • Experience and knowledge in building Agentic/AI solutions for real world problems.

  • Experience designing and implementing event-driven architectures.

  • Experience working with card payments or financial services platforms.

  • Hands-on experience with cloud-native technologies including Docker and Kubernetes.

  • Knowledge of API security principles and PCI DSS compliance requirements.

  • Experience working within existing codebases and improving legacy systems.

  • Strong backend development expertise with Java or C#, including frameworks such as Spring Boot.

  • Experience designing, building, and optimizing RESTful APIs, OData services, and SQL-based solutions.

  • Proven experience developing internet-scale services with a focus on scalability, security, availability, and reliability.

The base pay range represents the anticipated low and high end of the pay range for this position. Actual pay rates will vary and will be based on various factors, such as your qualifications, skills, competencies, and proficiency for the role. Base pay is one component of WEX's total compensation package. Most sales positions are eligible for commission under the terms of an applicable plan. Non-sales roles are typically eligible for a quarterly or annual bonus based on their role and applicable plan. WEX's comprehensive and market competitive benefits are designed to support your personal and professional well-being. Benefits include health, dental and vision insurances, retirement savings plan, paid time off, health savings account, flexible spending accounts, life insurance, disability insurance, tuition reimbursement, and more. For more information, check out the "About Us" section.Pay Range: $140,600.00 - $173,100.00

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