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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - **Company:** FIDELITY LLC - **Location:** Merrimack, NH, United States - **Experience:** Expert - **Salary:** $130,374.0 - $213,574.0 - **Contract:** Temporary contract - **Skills:** Agile Methodology, Artificial Intelligence, Amazon Web Services, Code Generation, Databases, Continuous Integration, Software Debugging, Junit, Software Engineering, SQL Databases, Software Testing Automation Framework, Software Organization, Spring-boot, Git, Containerization, Integration Tests, Information Technology, Playwright, Data Management, Restful APIs, Amazon Simple Queue Service (SQS), Code Restructuring, Software Version Control, Docker, Microservices - **Published:** July 18, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=175f6adf65929aa8 ## About the Role * Expert in core Java technologies and frameworks like Spring Boot * Proficiency in writing unit and integration tests using JUnit and Spring Boot * Experience building and maintaining integration tests across distributed or microservice-based systems * Proficient in databases, SQL, and data management * Understanding of AWS or other cloud platforms and containerization technologies such as Docker or ECS * Experience working with version control systems like GIT * Solid understanding of Agile development processes and continuous integration/deployment practices * Experience with asynchronous workers and resilient messaging services such as SNS and SQS * An understanding of microservice architectures and twelve-factor app patterns * Provide actionable feedback in pull request reviews * Experience with test automation frameworks such as Rest Assured or PlayWright would be a plus * Experience using AI-assisted coding tools for code generation, refactoring, and debugging is an advantage, * A solid foundation in software engineering, 5+ years' experience * Bachelor's degree in computer science or equivalent curriculum preferred * Possess critical thinking skills to build end-to-end solutions * Passionate and committed to learning new things and developing with the latest technologies and frameworks * Work well in both a small agile team and independently, having a strong user focus * Strong analytical, communication, and organizational skills and the ability to handle multiple tasks at a given time * Participate in engineering practices such as code and design reviews, environment strategy, and build and deployment pipelines ## Description As a Senior Software Engineer, you will be an integral part of the Core Custody engineering team. You'll get the opportunity to develop your skills, collaborate across Fidelity teams, and continue to learn in a fun, collaborative, iterative, and rapidly changing environment. This is a hands-on role where you will write code for product features. You will work closely with the technical lead and architect to build secure, scalable, resilient cloud-based microservices utilizing modern software development practices. You will help design and implement REST API clients and services, exchange asynchronous messages between services, and use SQL databases to manage data. You will also write automated unit and integration tests, package software using containers, coordinate builds using continuous integration pipelines, and prepare your services for deployment on AWS., * Work with product management on requirements, decompose epics into stories, and deliver solutions that meet or exceed customer expectations * Build scalable, resilient, cloud-based systems aligned with our long-term strategy * Partner with engineers and business stakeholders to embed quality into the team's workflow * Analyze requirements and identify potential risks early * Provide outstanding support, including on-call support when necessary * Mentor junior software engineers ## Related Videos - [Building the Next Generation of Software](https://www.wearedevelopers.com/videos/100186-building-the-next-generation-of-software) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Navigating the Future of Junior Developers in Tech](https://www.wearedevelopers.com/videos/1280-navigating-the-future-of-junior-developers-in-tech) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) ## Related Articles - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025) - [The Best X (Twitter) Accounts for Developers](https://www.wearedevelopers.com/magazine/294-the-best-x-twitter-accounts-for-developers) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [What is Software Engineering in the Age of AI?](https://www.wearedevelopers.com/magazine/640-what-is-software-engineering-in-the-age-of-ai) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)