Sr. Software Engineer

7Seventy; United States; Hybrid; USD 120,000 - 160,000; Full time

Benefits offered by this job

401(k) with match

Medical, dental, and vision coverage

Job summary

7Seventy is seeking a senior individual-contributor to design, build, and maintain reliable backend software within a defined problem space. You will focus on strong execution, sound technical decisions, and delivering high-quality systems that support product and business goals.

You’ll help modernize services, improve quality through hands-on development, and provide practical guidance to elevate the broader team.

Qualifications

• 4+ years of designing scalable, distributed backend systems.
• Experience with C#, .NET, SQL Server in AWS.
• Strong technical judgment and mentoring ability.
• Ability to own complex technical work end-to-end.

Responsibilities

• Design and implement features and services using established architectural patterns.
• Write high-quality, maintainable code and take ownership of systems within your domain.
• Improve reliability, performance, and security through disciplined engineering practices.
• Participate in design discussions and provide recommendations within a defined scope.
• Review code, share best practices, and support the growth of less experienced engineers.
• Collaborate with product partners, designers, and engineers to deliver agreed outcomes.

Skills

C#

.NET

SQL Server

AWS

Distributed systems

Cloud-based architectures

Job description

This senior individual-contributor role focuses on designing, building, and maintaining reliable backend software within a defined problem space.The role emphasizes strong execution, sound technical decision-making, and consistent delivery of high-quality systems that support product and business goals.

You’ll help modernize services and improve quality through hands-on development and day-to-day technical leadership. This includes elevating code quality,supporting predictable delivery, and providing practical guidance that helps the broader team ship maintainable software.

What Success Looks Like

• Features and services are well designed, implemented correctly, and operate reliably in production
• Technical decisions balance delivery speed with maintainability and performance within owned areas
• Code quality improves through disciplined implementation practices and thoughtful code reviews
• Engineers benefit from informal mentorship and practical guidance on design and implementation
• Work is delivered predictably and aligns with agreed product requirements and timelines

What You’ll Do

• Design and implement features and services using established architectural patterns
• Write high-quality, maintainable code and take ownership of systems within your domain
• Improve reliability, performance, and security through disciplined engineering practices
• Participate in design discussions and provide recommendations within a defined scope
• Review code, share best practices, and support the growth of less experienced engineers
• Collaborate with product partners, designers, and engineers to deliver agreed outcomes

Qualifications

• Strong experience building and evolving backend systems using C#, .NET, and SQL Server in AWS
• 4+ years of experience designing scalable, distributed systems and cloud-based architectures
• Proven ability to own complex technical work from concept through deployment
• Strong technical judgment and the ability to influence engineering decisions without formal authority
• Demonstrated ability to mentor engineers and elevate quality through clear standards and practical coaching
• A bias for action paired with a high bar for reliability, security, and long-term maintainability

Benefits may include medical, dental, and vision coverage, a 401(k) with match, and a generous paid time off plan.