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Senior Backend Python Jobs in Delaware (NOW HIRING)

Athena LLC

Role Overview The Senior Backend Engineer will be responsible for designing, developing, and ... Proficiency in languages such as Python or Node.js. Experience building AI-powered products ...

M&T Bank

Software Engineer II

Wilmington, DE · On-site

$154.68K - $164.68K/yr

... a Sr. Software Engineer/Developer, ETL/Big Data Developer, Software Programmer, or related ... Designing and developing applications in Python; * Using Snowflake as the backend for Data ...

M&T Bank

Software Engineer II

Wilmington, DE

$154.68K - $164.68K/yr

... a Sr. Software Engineer/Developer, ETL/Big Data Developer, Software Programmer, or related ... Designing and developing applications in Python; * Using Snowflake as the backend for Data ...

Best Egg

Lead Software Engineer I

Wilmington, DE

You will work closely with senior engineers and architects to implement scalable, secure, and ... Strong backend development experience with Java and Python. * Solid understanding of SQL, data ...

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Senior Backend Python information

What are the key skills and qualifications needed to thrive as a Senior Backend Python Developer, and why are they important?

To thrive as a Senior Backend Python Developer, you need expertise in Python programming, strong knowledge of backend frameworks (such as Django or Flask), and experience with database management, often backed by a degree in computer science or equivalent experience. Familiarity with version control systems like Git, containerization tools like Docker, cloud platforms (e.g., AWS), and possibly certifications in cloud or Python technologies are common requirements. Outstanding problem-solving skills, effective communication, and the ability to mentor junior developers help set top performers apart. These competencies ensure the development of robust, scalable, and maintainable backend systems that support business objectives.

What are some common challenges Senior Backend Python developers face when working on large-scale systems?

Senior Backend Python developers working on large-scale systems often encounter challenges such as ensuring application scalability, maintaining code quality across distributed teams, and optimizing performance for high traffic. Balancing the integration of new features with legacy system constraints can also be demanding. Effective communication and collaboration with frontend teams, DevOps, and product managers are crucial for delivering reliable and maintainable backend solutions.

What does a Senior Backend Python Developer do?

A Senior Backend Python Developer designs, builds, and maintains the server-side logic of web applications using Python. They are responsible for creating robust APIs, optimizing databases, ensuring application security, and integrating third-party services. In addition, they often mentor junior developers, contribute to architectural decisions, and collaborate closely with frontend and DevOps teams. Their work ensures that applications are scalable, reliable, and efficient. Senior developers typically have several years of experience and deep knowledge of Python frameworks like Django or Flask.

What is the difference between Senior Backend Python vs Backend Developer?

AspectSenior Backend PythonBackend Developer
Required CredentialsBachelor's in CS or related, 5+ years experience, Python expertiseBachelor's in CS or related, 2-4 years experience, Python knowledge
Work EnvironmentTech companies, startups, enterprise systemsTech firms, startups, software agencies
Employer & Industry UsageUsed across industries requiring scalable backend solutionsCommon in web development and software services
Search & Comparison IntentUnderstanding senior roles, responsibilities, salaryEntry to mid-level backend roles, skill requirements

Senior Backend Python professionals typically have more experience, advanced skills, and leadership responsibilities compared to Backend Developers. They often work on complex systems, mentor junior staff, and have a broader understanding of architecture. Backend Developers focus on building and maintaining backend services with less emphasis on leadership or strategic planning.

What are popular job titles related to Senior Backend Python jobs in Delaware? For Senior Backend Python jobs in Delaware, the most frequently searched job titles are:
What job categories do people searching Senior Backend Python jobs in Delaware look for? The top searched job categories for Senior Backend Python jobs in Delaware are:
What cities in Delaware are hiring for Senior Backend Python jobs? Cities in Delaware with the most Senior Backend Python job openings:
Senior Backend Python jobs near you
Infographic showing various Senior Backend Python job openings in Delaware as of May 2026, with employment types broken down into 85% Full Time, 13% Part Time, and 2% Contract. Highlights an 91% Physical, and 9% Remote job distribution.
Lead Engineer II - Backend (Python)

Lead Engineer II - Backend (Python)

Best Egg

Wilmington, DE • On-site

$100K - $135K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 24 days ago

Job description

Best Egg, now part of Barclays, is a market-leading, tech-enabled financial platform helping people build financial confidence through innovative lending solutions and financial health tools. As a Barclays company, we combine the agility and customer focus of a fintech with the global reach, stability, and purpose of a leading financial institution-working together to create a better financial future for our customers and communities.
At Best Egg, you'll find a culture grounded in our core values-putting people first, creating clarity, delivering with excellence -enhanced by Barclays' commitment to integrity, inclusion, and long-term impact. Together, we empower our colleagues to challenge, innovate, and take ownership while making a meaningful difference in people's financial lives.
With the strength of Barclays behind us, we offer expanded opportunities for growth, development, and career mobility across a global organization-while continuing to build the products and experiences that make Best Egg unique.
We're looking for collaborative, curious problem-solvers who are excited to make an impact and grow with us.
We're proud to be an equal opportunity employer committed to building a diverse and inclusive team.
The Lead Software Engineer II - Backend plays an important role in building and enhancing backend engineering solutions across the organization. This role focuses on designing and delivering reliable, high-quality Python services on AWS while contributing to technical discussions, improving engineering practices, and supporting team execution. You will work closely with senior engineers, Product, and other backend and frontend teams to build performant, maintainable, and scalable APIs, serverless functions, and containerized services.
What You Will Do
Technical Leadership & Delivery
  • Design, develop, and deliver high-quality backend Python services iteratively and incrementally.
  • Take ownership of key services and APIs-from hands-on coding through CI/CD, deployment to AWS, monitoring, and on-call support.
  • Contribute to backend observability using tools like Datadog for logging, metrics, distributed tracing, and alerting.
  • Participate in technical design discussions and contribute architectural insights, working with senior leaders to shape solutions.
  • Ensure software follows modern engineering practices, including clean code, testing, automation, and modern backend architecture patterns.
  • Support continuous improvement in code quality, reliability, performance, and developer experience.
  • Translate business requirements into clear technical tasks and help validate assumptions and approaches.

Qualifications & Experience
Technical Expertise
  • 3-7 years of professional backend software engineering experience.
  • Proficiency in Python at scale, including modern Python (3.13+), type hints, async/await, packaging, and a strong grasp of the standard library and the broader ecosystem.
  • Expertise with at least one major Python web framework (FastAPI preferred; Django or Flask also strong) and the patterns that make Python services reliable in production.
  • Strong hands-on experience with AWS, including building and operating production workloads on Lambda (serverless functions, event-driven architectures) and EKS (containerized services on Kubernetes).
  • Working knowledge of supporting AWS services such as API Gateway, SQS/SNS, S3, IAM, CloudWatch, and Secrets Manager.
  • Experience designing and building RESTful APIs
  • Working knowledge of PostgreSQL
  • Experience with Redis for caching, rate limiting
  • Experience with containerization (Docker) and Kubernetes fundamentals (deployments, services, scaling, troubleshooting).
  • Experience with CI/CD pipelines and modern release tooling; familiarity with GitHub Actions and Octopus Deploy is a plus.
  • Experience with unit, integration, and contract testing (pytest or similar).
  • Experience working within mature, legacy codebases and contributing to incremental modernization efforts.

What Success Looks Like
In the first 90 days
  • Own core services or features.
  • Deliver high-quality, production-ready code and contribute meaningfully to team goals.
  • Build strong working relationships within Engineering, Product, and partner teams.

In 6-12 months
  • Lead development of one or more services or features with increasing autonomy.
  • Help improve service performance, reliability, and scalability.
  • Support and elevate engineering practices through mentorship, code reviews, and process improvements.

$100,000 - $135,000 a year
Employee Benefits
Best Egg offers many additional benefits for our employees, including (but not limited to):
• Pre-tax and post-tax retirement savings plans with a competitive company matching
program
• Generous paid time-off plans including vacation, personal/sick time, paid short--
term and long-term disability leaves, paid parental leave, and paid company
holidays
• Multiple health care plans to choose from, including dental and vision options
• Flexible Spending Plans for Health Care, Dependent Care, and Health
Reimbursement Accounts
• Company-paid benefits such as life insurance, wellness platforms, employee
assistance programs, and Health Advocate programs
• Other great discounted benefits include identity theft protection, pet insurance,
fitness center reimbursements, and many more!
In compliance with the CCPA, Best Egg is fully committed to handling the personal information and data of employees and job applications responsibly with respect and due care. Review our CCPA Employee Policy here

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