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Senior Python Flask Developer Jobs in New Hampshire

BAE Systems

Eng Sr - SW

Nashua, NH · On-site

$97K - $164K/yr

We are seeking a Senior Python Backend Engineer to join our Digital Architecture Team (DAT). In ... Proficiency with modern Python frameworks (e.g., FastAPI, Flask, or Django). * Database Interaction:

PNC Bank

R Shiny, Dash, Flask) Programming: oStrong programming experience in Python or R. oStrong SQL skills and experience working with large datasets. oExperience working with Apache Spark using one or ...

ATR International

Senior Cloud Engineer

Merrimack, NH

$125K - $165K/yr

Position Description We are looking for a Senior Software Engineer to join our Market Data team ... Python, Cassandra database and knowledge of cloud platform, although we're open to strong ...

ATR International

Senior Cloud Engineer

Merrimack, NH · On-site

$125K - $165K/yr

Position Description We are looking for a Senior Software Engineer to join our Market Data team ... Python, Cassandra database and knowledge of cloud platform, although we're open to strong ...

Broadcom

Senior Mainframe DevOps Architect

Portsmouth, NH · On-site

$132K - $179K/yr

About the Role We are seeking a Senior Mainframe DevOps Architect to lead solution design and own ... Python, Groovy, Gulp). * Tooling, Languages & Subsystems: Proficient with REXX scripting and JCL ...

FedPoint

Senior Systems Engineer

Portsmouth, NH · Hybrid

$106K - $145K/yr

Senior System Engineer Department: Infrastructure & IT Management Reports To: Manager, IT ... Proficiency with scripting and automation tools such as PowerShell, Bash, or Python. Preferred ...

FedPoint

Senior Systems Engineer

Portsmouth, NH · On-site

$106K - $145K/yr

Senior System Engineer Department: Infrastructure & IT Management Reports To: Manager, IT ... Proficiency with scripting and automation tools such as PowerShell, Bash, or Python. Preferred ...

FedPoint

Senior Systems Engineer

Portsmouth, NH · Hybrid

$106K - $145K/yr

Senior System Engineer Department: Infrastructure & IT Management Reports To: Manager, IT ... Proficiency with scripting and automation tools such as PowerShell, Bash, or Python. Preferred ...

Lockheed Martin - US

DevOps Engineer Senior

Hanover, NH · Hybrid

$129K - $166K/yr

Design, implement, and maintain DevOps pipelines for C++ or Python applications. System Integration and Testing * Develop and oversee the integration strategy for combining hardware, software, and ...

DEKA

Senior Electrical Engineer

Manchester, NH · On-site

$107K - $139K/yr

We are seeking a Senior Electrical Engineer for a state-of-the-art medical device product ... Knowledge of analytical computing software (MATLAB, Python, Labview, etc.) for measurement ...

GBG

Senior Machine Learning Engineer (3968)

Manchester, NH · On-site

$104K - $142K/yr

Senior Machine Learning Engineer The Senior Machine Learning Engineer is a senior individual ... Strong proficiency in Python (C++ is a plus) and PyTorch (TensorFlow is a plus) * Hands-on ...

GBG

Senior Machine Learning Engineer (3968)

Manchester, NH · On-site

$104K - $142K/yr

Senior Machine Learning Engineer The Senior Machine Learning Engineer is a senior individual ... Strong proficiency in Python (C++ is a plus) and PyTorch (TensorFlow is a plus) * Hands-on ...

Simbex

Senior Embedded Systems Engineer (EE/FW)

Lebanon, NH · On-site

$133K - $177K/yr

Simbex is seeking a Senior Embedded Systems Engineer to own the full hardware-firmware stack for a ... Port impact detection algorithms from MATLAB or Python into constrained C/C++ firmware * Apply ...

Altaeros

Senior Controls Engineer

Fremont, NH · On-site

$140K/yr

As the Senior Controls Engineer you will have experience developing control software for robots ... Familiarity with Python programming language is a plus * Exceptional interpersonal and ...

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Senior Python Flask Developer information

What is a senior Python Flask developer?

Senior Python Flask Developers are experienced software engineers who specialize in building web applications using the Python programming language and the Flask web framework. They are responsible for designing, developing, and maintaining scalable backend systems, APIs, and web services. In addition to strong coding skills, they often lead projects, mentor junior developers, and ensure best practices in code quality, security, and performance. Their expertise allows them to solve complex technical challenges and contribute to the overall architecture and success of software projects.

What are the key skills and qualifications needed to thrive as a senior Python Flask developer, and why are they important?

To thrive as a Senior Python Flask Developer, you need advanced proficiency in Python, deep understanding of the Flask framework, and experience designing scalable backend architectures, typically supported by a degree in computer science or related field. Familiarity with RESTful API development, database management systems like PostgreSQL or MySQL, and version control tools such as Git is essential, and certifications in cloud platforms or web development can be beneficial. Strong problem-solving skills, clear communication, and the ability to mentor junior developers are standout soft skills for this role. These abilities ensure efficient delivery of robust, maintainable web applications and foster productive collaboration within development teams.

What are some common challenges faced by senior Python Flask developers when working on large-scale applications?

Senior Python Flask Developers often encounter challenges such as managing complex codebases, ensuring scalability, and maintaining performance as applications grow. Integrating Flask with other technologies (like databases, caching systems, or third-party APIs) can introduce architectural complexities. Additionally, balancing rapid development with writing maintainable, well-tested code is crucial. Collaboration with frontend developers, DevOps, and QA teams is frequent, requiring strong communication and problem-solving skills.

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

AspectSenior Python Flask DeveloperPython Developer
Required CredentialsBachelor's in CS or related, experience with Flask, REST APIsBachelor's in CS or related, basic Python knowledge
Work EnvironmentWeb development teams, startups, tech companiesSoftware development teams, startups, tech companies
Employer & Industry UsageTech firms, SaaS companies, startupsVariety of industries including finance, healthcare, tech
Search & Comparison IntentAdvanced roles, leadership, project scopeEntry to mid-level development, learning

The main difference between a Senior Python Flask Developer and a Python Developer lies in experience and responsibilities. Senior developers typically have more expertise in Flask, lead projects, and mentor junior staff, whereas Python Developers may focus on coding and basic application development. Both roles are essential in web development teams, but senior roles require deeper knowledge and leadership skills.

What are popular job titles related to Senior Python Flask Developer jobs in New Hampshire?

For Senior Python Flask Developer jobs in New Hampshire, the most frequently searched job titles are:

What job categories do people searching Senior Python Flask Developer jobs in New Hampshire look for?

The top searched job categories for Senior Python Flask Developer jobs in New Hampshire are:

What cities in New Hampshire are hiring for Senior Python Flask Developer jobs?

Cities in New Hampshire with the most Senior Python Flask Developer job openings:

Senior Python Flask Developer jobs near you
Infographic showing various Senior Python Flask Developer job openings in New Hampshire as of August 2026, with employment types broken down into 1% Internship, 89% Full Time, 6% Part Time, and 4% Contract. Highlights an 76% Physical, 6% Hybrid, and 18% Remote job distribution.

Eng Sr - SW

BAE Systems

Nashua, NH • On-site

$97K - $164K/yr

Full-time

Re-posted 19 days ago

BAE Systems rating

8.4

Company rating: 8.4 out of 10

Based on 151 frontline employees who took The Breakroom Quiz

10th of 49 rated military and defense

Job description


At BAE Systems, we help protect those who protect us. We are seeking a Senior Python Backend Engineer to join our Digital Architecture Team (DAT). In this role, you will be the driving force behind the services that power our digital transformation, building the high-performance backend systems that turn raw engineering data into mission-critical capabilities.
You will be responsible for designing and implementing scalable, secure, and maintainable microservices that sit at the heart of our autonomous mission management and data analytics platforms. You will work at the intersection of high-performance computing and cloud-native architecture, ensuring our backend is robust enough to handle the rigors of defense-industry requirements.
Key Responsibilities
Microservice Development: Design and develop high-performance backend services using Python, focusing on scalability, maintainability, and low-latency response times.
API Design & Implementation: Lead the development of gRPC and RESTful APIs, utilizing Protobuf to ensure efficient, type-safe communication between distributed services.
System Integration: Build the "glue" that connects our containerized microservices platform to both modern cloud databases and legacy Windows-based infrastructure.
Backend Optimization: Optimize application performance through efficient concurrency models (AsyncIO), caching strategies, and database query optimization.
DevOps & Deployment: Own the containerization of your services using Docker and Kubernetes, integrating them into robust CI/CD pipelines for automated deployment.
Technical Leadership: Lead code reviews, establish Python coding standards (PEP 8), and mentor mid-level and junior engineers to ensure a high bar for software quality.
About BAE Systems Electronic Systems
BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Improving the future and protecting lives is an ambitious mission, but it's what we do at BAE Systems. Working here means using your passion and ingenuity where it counts - defending national security with breakthrough technology, superior products, and intelligence solutions. As you develop the latest technology and defend national security, you will continually hone your skills on a team-making a big impact on a global scale. At BAE Systems, you'll find a rewarding career that truly makes a difference. Electronic Systems (ES) is the global innovator behind BAE Systems' game-changing defense and commercial electronics. Exploiting every electron, we push the limits of what is possible, giving our customers the edge and our employees opportunities to change the world. Our products and capabilities can be found everywhere - from the depths of the ocean to the far reaches of space. At our core are more than 14,000 highly talented Electronic Systems employees with the brightest minds in the industry, we make an impact - for our customers and the communities we serve.
This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.
Required Skills and Education
Required Education & Experience Education:
  • Bachelor's Degree in Computer Science, Software Engineering, or a related technical field.
  • 6+ years of professional experience in backend software engineering, with a heavy emphasis on the Python ecosystem.
  • Core Technical Stack: Advanced Python: Mastery of Python 3.x, including asynchronous programming (AsyncIO), decorators, and type hinting.
  • High-Performance Comms: Professional experience with gRPC and Protocol Buffers (Protobuf).
  • Frameworks: Proficiency with modern Python frameworks (e.g., FastAPI, Flask, or Django).
  • Database Interaction: Strong experience with PostgreSQL and ORMs like SQLAlchemy.
  • Infrastructure: Hands-on experience with Docker and Kubernetes in a production environment.
  • Must be a US Citizen, eligible for a US Secret security clearance.

Preferred Skills and Education
Preferred Skills & Qualifications:
  • Experience with message brokers or event-driven architectures (e.g., Kafka, RabbitMQ, or Redis).
  • Familiarity with C# or other statically typed languages to support integration with legacy systems.
  • Experience implementing OAuth2, JWT, or other secure authentication/authorization patterns.
  • Knowledge of distributed system patterns (Circuit Breaker, Saga, etc.).
  • Clearance: Ability to obtain and maintain a U.S. Secret Clearance.
  • Culture Fit
  • Clean Code Advocate: A passion for writing readable, testable, and maintainable code with a strong emphasis on unit and integration testing.
  • Architectural Thinker: Ability to look beyond the immediate ticket to understand how a service affects the entire system's reliability.
  • Collaborative Problem Solver: A willingness to partner with Data Engineers and Frontend developers to create a seamless end-to-end user experience.
  • Mission-Driven: A commitment to the reliability and security required for national security applications.

What BAE Systems employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

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About BAE Systems

Sourced by ZipRecruiter

At BAE Systems, we provide some of the world's most advanced, technology-led defence, aerospace and security solutions. We employ a skilled workforce of more than 93,000 in around 40 countries. Working with customers and local partners, we develop, engineer, manufacture, and support products and systems to deliver military capability, protect national security and people, and keep critical information and infrastructure secure.

Industry

National security and international affairs and it services

Company size

10,000+ Employees

Headquarters location

Falls Church, VA, US

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