Sr. Engineer, Software

T-Mobile • Frisco, TX

34d • Hybrid

About The Position

At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That’s how we’re UNSTOPPABLE for our employees! Job Overview The FinTech Platform team is seeking a Senior backend development Engineer will collaborate with a team of software engineers to design, implement, and deploy complete, cloud-native systems that meet customer requirements. This role focuses on the creation, enhancement, and maintenance of software solutions, which typically include back-end services, microservices, databases, and the cloud infrastructure required to support deployment and operations. The engineer is responsible for owning the end-to-end software lifecycle — from development to deployment and support. As a generalist, the Senior Engineer is expected to have broad knowledge across the full technology stack. We take pride in fostering a culture of innovation, embracing agile methodologies, and promoting transparency in all aspects of our work. Join us in embodying the spirit of the Un-carrier and make a tangible impact! Our team is dynamic, diverse, and no two days are ever the same. This position will sit in Frisco, TX; Bellevue, WA; OR Atlanta, GA This is not a remote role - this is a hybrid environment requiring 3 days a week in office.

Requirements

• Bachelor's Degree Computer Science or Engineering, or related technical field (Required)
• 4-7 years Technical engineering experience.
• 4+ years of backend development experience, with strong proficiency in backend technologies such as Java and RESTful Web Services — Frontend experience is a plus
• 4+ years of software engineering experience delivering robust, scalable, and secure applications — Required
• 3+ years of hands-on experience designing and developing ETL pipelines for data ingestion, transformation, and integration
• 3+ years of working experience with cloud platforms, primarily the AWS ecosystem — including services like EC2, S3, RDS, Lambda, CloudWatch, ECS/EKS, and IAM — Required
• 2+ years in DevOps and Infrastructure as Code (IaC) practices using tools like Terraform, CloudFormation, or AWS CDK
• 3+ years of experience designing and maintaining both SQL and NoSQL database systems, including strong proficiency in PostgreSQL
• Communication (Required)
• Customer Service (Required)
• Analytics (Required)
• Technical Writing (Required)
• At least 18 years of age
• Legally authorized to work in the United States
• Travel Required (Yes/No): Yes

Nice To Haves

• 2+ years of professional experience in the FinTech industry, with a focus on regulated environments, compliance, or financial data platforms — Nice to have

Responsibilities

• Design and develop end-to-end backend development solutions, covering both backend and frontend components.
• Conduct code reviews, provide technical guidance, and mentor junior and mid-level team members.
• Develop and schedule automated jobs and microservices, establishing new patterns and orchestration workflows.
• Design and implement data storage solutions using both relational (e.g., PostgreSQL) and non-relational databases.
• Deploy and manage cloud infrastructure using Infrastructure as Code (IaC) tools such as Terraform or CloudFormation.
• Evaluate and recommend emerging cloud services, tools, and architectural patterns to optimize system performance and scalability.
• Propose and champion innovative solutions to improve existing systems, processes, and services.
• Introduce and apply modern frameworks and technologies to enhance platform capabilities and technical velocity.
• Partner with product owners and engineering teams to break down features into user stories, estimate complexity, and plan sprints.
• Stay current with emerging technologies and continuously invest in skill development and cross-training.
• Effectively communicate technical ideas, constraints, and trade-offs to both technical and non-technical stakeholders.
• Demonstrate strong ability to quickly learn new tools and frameworks in dynamic development environments.
• Maintain awareness of the organization’s technology roadmap and contribute to long-term platform planning.
• Track and analyze industry trends, incorporating best practices and forward-thinking engineering techniques into day-to-day work.

Benefits

• Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches.
• employees in regular, non-temporary roles are eligible for an annual bonus or periodic sales incentive or bonus, based on their role.
• Most Corporate employees are eligible for a year-end bonus based on company and/or individual performance and which is set at a percentage of the employee’s eligible earnings in the prior year.
• medical, dental and vision insurance, a flexible spending account, 401(k), employee stock grants, employee stock purchase plan, paid time off and up to 12 paid holidays - which total about 4 weeks for new full-time employees and about 2.5 weeks for new part-time employees annually - paid parental and family leave, family building benefits, back-up care, enhanced family support, childcare subsidy, tuition assistance, college coaching, short- and long-term disability, voluntary AD&D coverage, voluntary accident coverage, voluntary life insurance, voluntary disability insurance, and voluntary long-term care insurance.
• eligible employees can also receive mobile service & home internet discounts, pet insurance, and access to commuter and transit programs!

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees