Sr. Software Engineer 2-Full Stack

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K1 Group of Companies

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Job Title: Senior Software Engineer 2-Full Stack

Level Label: Software Engineer 4

Reports To: VP Product Services

Location: Fully Remote (any US state)

Base Salary Range: $143,000 - $171,000 (salary ties to geography of candidate)

Bonus Eligible (Y/N): Y

Travel Requirements: None

Company Benefits

The K1 Group of companies offers excellent benefits to its staff. Benefits include:

Medical

• - Choice of PPO or HDHP (with $3K company HSA contribution). Employee, spouse, and family premiums 100% company-paid.
Dental
• - Employee, spouse, and family premiums 100% company-paid
Vision
• - Employee, spouse, and family premiums 100% company-paid
• Employee Long-Term Disability (LTD) coverage - 100% company-paid
• Employee Short-Term Disability (STD) coverage - 100% company-paid
• Employee Life Insurance - 3x salary or $500K - guaranteed issue & 100% company-paid
• 401K company matching (dollar-for-dollar) contribution up to 4% of eligible earnings
• 401K company additional 2% contribution (even if employee does not defer any amounts)
• Optional healthcare FSA (PPO plan) or HSA (HDHP) employee contribution deferrals
• 7-days sick days per calendar year
• 10-days holidays (company paid) per calendar year
• 15-days PTO per calendar year
• Optional discounted mobile phone service for employee and family members

Company Description

The K1 Group (K1) of companies are within the telecommunications industry providing cellular services and devices to industry participants through its KonnectONE Inc. and MVNO Connect LLC companies, and mobile phone services to consumers through Moxee Technologies LLC DBA Panda Mobile. K1 continues to grow and expand through its industry offerings incorporating technology innovation and nimble business flexibility. More information may be found at K1 websites: and

The Opportunity

Join at a pivotal moment—your work will shape a platform built to serve millions as we scale. As Senior Software Engineer 2-Full Stack, you'll own end-to-end design and delivery on our modern TypeScript + AWS platform—crafting backend services, wireless infrastructure integrations, payment and financial reporting integrations, infrastructure as code, and a resilient React front end. You'll lay the foundation for growth by building scalable architectures, CI/CD pipelines, and automated tests while collaborating daily through pair programming and vertical feature slicing to ship production-quality code. If you thrive on building world-class products from top to bottom, challenging assumptions, and seeing your work enable the next phase of growth, you belong with us.

Role Description

As our Senior Software Engineer 2-Full Stack, you will design, build, and operate end-to-end product capabilities across a React front end and AWS-native backend. You will architect high-scale APIs, craft resilient infrastructure-as-code, embed automated tests and observability from day one, and collaborate daily with product, design, and domain experts to deliver business-critical outcomes at startup speed.

Role Responsibilities

Architect and implement frontend and backend solutions that can serve millions of subscribers Lead daily collaboration with product managers, fellow engineers, designers, and stakeholders to ship high-quality, maintainable code

Facilitate technical discussions, pair program weekly, and slice work vertically so that user-visible value ships every day Own critical system components from API design through IaC deployments Champion continuous delivery, automated testing, and deep observability Build frontend features with TypeScript, React, and Next.js Design and deploy backend services with TypeScript, DynamoDB, ECS, SST, and other AWS offerings Develop and maintain test suites across unit, integration, and E2E layers Define and evolve internal APIs, data models, and abstractions to tame complexity at scale Engineer backend systems for resilience, performance, and graceful failure under load Author AWS CDK stacks and configure CI/CD pipelines for safe, rapid delivery Iterate quickly, question requirements ruthlessly, and make cost-benefit trade-offs explicit

Minimum Qualification Requirements

7 + years building production backend systems 5 + years building production frontend applications

Excels at integrating complex systems and dependencies

Skilled at architecting systems for scale and reliability

Facilities business critical decisions and workshops with technical team members and stake holders

Expert in one programming language and proficient with multiple Deep experience designing and consuming RESTful APIs Hands-on expertise with infrastructure-as-code tools (SST or similar) Fluency in automated testing, observability, and fault handling Proven ownership of features from architecture through iteration Bachelor's degree in Computer Science or equivalent experience

Preferred But Not Required

Background in fintech, telecom, or other highly regulated domains Exposure to credit data, billing systems, or similar services Advanced TypeScript skills

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Candidates must be authorized to work in the U.S. Roles that include access to financial systems are required to undergo a financial and criminal background check as a condition of employment.