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Senior Python Flask Developer Jobs in Weston, MA

... Python/Django/Flask, etc), building APIs services and scaling systems * UX & Prototyping ... Figma) * DevOps & Cloud: Experience with cloud platforms (e.g., AWS, GCP, Azure) and CI/CD ...

Senior Software Engineer - Rust and Python

Boston, MA · On-site

$133.10K - $175.50K/yr

We're looking for a Senior Software Engineer with strong Rust and Python expertise and a product-focused mindset to help build a new class of AI-powered transpilation and code generation tools. These ...

Senior Software Engineer - Rust and Python

Boston, MA · On-site

$133.10K - $175.50K/yr

We're looking for a Senior Software Engineer with strong Rust and Python expertise and a product-focused mindset to help build a new class of AI-powered transpilation and code generation tools. These ...

Senior Software Engineer - Rust and Python

Boston, MA · Hybrid

$133.10K - $175.50K/yr

We're looking for a Senior Software Engineer with strong Rust and Python expertise and a product-focused mindset to help build a new class of AI-powered transpilation and code generation tools. These ...

Senior AI Engineer, ARIA Team

Boston, MA · On-site

$113.50K - $155.90K/yr

... Python (FastAPI, Flask, or Django) and TypeScript or JavaScript, with experience in modern frontend frameworks. • Proven experience designing and building CI/CD pipelines for software or ML systems ...

We are looking for a Senior IT App Engineer to design, build, and scale production-grade LLM ... Strong full-stack engineering skills across Python (FastAPI, Flask, or Django) and TypeScript or ...

Senior Software Engineer

Waltham, MA · On-site

$146.61K - $198.35K/yr

... Python/Django/Flask, etc), building APIs services and scaling systems * UX & Prototyping ... Figma) * DevOps & Cloud: Experience with cloud platforms (e.g., AWS, GCP, Azure) and CI/CD ...

We are looking for a Senior AI Engineer to design, build, and scale production-grade LLM ... Strong full-stack engineering skills across Python (FastAPI, Flask, or Django) and TypeScript or ...

Senior DevOps Engineer

Cambridge, MA · Remote

$143.20K - $184K/yr

SENIOR DEVOPS ENGINEER We are seeking a Senior DevOps Engineer to implement and manage our cloud ... Python, bash, other scripting language experience is required. Ansible, Terraform, or equivalent ...

Senior Platform Developer

Boston, MA

$59.50 - $78.50/hr

Description Senior Platform Software Developer We are currently seeking self-motivated Senior ... Excellent foundation leading designs of large Object Oriented Software Systems in PHP, Python, Ruby ...

Experience with object-oriented programming using languages such as Java, Python, or JavaScript ... Experience with at least one backend technology stack: Node.js, Python (Django or Flask), or Java ...

Python skills for instrumenting tests and creating feature test page * Java knowledge for ... Apache/mod_wsgi, Flask, Postgres * Experience in a cross platform environment * iOS / Android ...

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Showing results 1-20

Senior Python Flask Developer information

See Weston, MA salary details

$59.3K

$153.2K

$210.4K

How much do senior python flask developer jobs pay per year?

As of May 30, 2026, the average yearly pay for senior python flask developer in Weston, MA is $153,163.00, according to ZipRecruiter salary data. Most workers in this role earn between $131,100.00 and $176,400.00 per year, depending on experience, location, and employer.

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 are Senior Python Flask Developers?

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 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 cities near Weston, MA are hiring for Senior Python Flask Developer jobs? Cities near Weston, MA with the most Senior Python Flask Developer job openings:
Infographic showing various Senior Python Flask Developer job openings in Weston, MA as of May 2026, with employment types broken down into 86% Full Time, and 14% Contract. Highlights an 53% Physical, 27% Hybrid, and 20% Remote job distribution, with an average salary of $153,163 per year, or $73.6 per hour.

Principal Quant Developer (MLOps)

Fidelity Investments

Boston, MA

Full-time

Medical, Retirement, PTO

Posted 25 days ago


Fidelity Investments rating

8.7

Company rating: 8.7 out of 10

Based on 264 frontline employees who took The Breakroom Quiz

14th of 138 rated financial services


Job description

Job Description:

Principal Quant Developer

The Role

The Quantitative Research & Investing Technology (QRIT) team within Fidelity's Asset Management Technology group is seeking a highly motivated and curious Principal Quantitative Developer. In this role you will contribute to a dynamic and fast-paced development team supporting researchers in prototyping and delivering new systematic investment strategies. You will provide high impact solutions on various projects including alpha research, portfolio construction, and risk management. Your technology knowledge covers a broad spectrum of technologies, including R, Python, and PL/SQL databases, positioning you as a full-stack software engineer who capitalizes on enterprise technology. You are committed to constructing high-quality, scalable, robust, resilient and efficient analytical and software solutions that propel investment processes forward.

You will possess:

  • A Bachelor's degree in Computer Science, Financial Engineering, Information Technology, Information Systems, Mathematics, Physics, Statistics, Engineering, or a closely related field and six (6) years of experience as a Senior Quant Developer or similar role.
  • Alternatively, a Master's degree (or equivalent foreign education) in the same fields, accompanied by four (4) years of experience as a Lead Quantitative Development or similar role.
  • This experience should include building high-quality, robust, and efficient systems and solutions for financial investment decisions, utilizing R, Python, PL/SQL databases, and quantitative techniques.

The Expertise and Skills You Bring

Core Engineering

  • Expert in Python with experience across the development stack (full stack)
  • Exposure to object-oriented programming (OOP) and design patterns
  • Experience in at least one unit testing framework and understanding of test-driven development (TDD) concepts and methodologies
  • A commitment to writing clean, maintainable, and efficient code, with best practices for long-term maintainability

Data & Infrastructure

  • Skilled in a range of database technologies: SQL (Oracle & Snowflake), NoSQL, Graph
  • Skilled in batch and API technologies: such as batch scheduling (using Autosys and Airflow) and creating REST APIs (using FAST API and Flask)
  • Proven ability to construct and manage robust data pipelines and event-driven workflows
  • Proven expertise in system design and cloud architecture on AWS, leveraging resources including Lambda, S3, EKS, and EC2


DevOps & CI/CD

  • Experience in containerization with Docker and orchestration with Kubernetes
  • Implement CI/CD pipelines (using Linux and Jenkins), code versioning using GitHub
  • Experience in Infrastructure as Code methodologies for consistent and scalable infrastructure management


MLOps & AI Infrastructure

  • Experience operationalizing machine learning models on AWS, including services such as SageMaker (training, deployment, model registry, monitoring) and Bedrock (foundation model access and fine-tuning)
  • Operationalizing AI/ML pipelines using modern MLOps principles, including production lifecycle management of AI models
  • Familiarity with experiment tracking and model versioning tools (e.g., MLflow)
  • Identifying and deploying applied ML solutions relevant to quantitative investing: time series forecasting, anomaly detection, NLP, and predictive analytics
  • Awareness of responsible AI governance practices
  • Demonstrated enthusiasm for contributing to all facets of our AI ecosystem, from application development to MLOps/LLMOps infrastructure, with a versatile, full-stack engineering mindset


Quantitative & Domain Knowledge

  • Demonstrated knowledge of mathematics, statistics, and quantitative finance
  • Deep understanding of quantitative techniques and methods, statistics and econometrics including probability, linear regression and time series data analysis
  • Analyze and design systems to implement quantitative models for systematic financial investments using R and Python, including time series forecasting models, multi-asset class portfolio construction strategies, risk management tools, alpha research, and simulation-based algorithms
  • Domain knowledge in either equities, fixed income or alternative asset classes
  • Progress towards CFA (or equivalent) a plus

Collaboration & Communication

  • Strong presentation and communication skills, with a knack for engaging with quant researchers and investment professionals
  • Strong problem-solving skills, with a proven ability to work effectively in cross-functional teams
  • A creative problem solver and a curiosity fueled by keeping up with advanced methodologies and industry trends, especially in the finance community
  • Lead the implementation of a research project through the entire software development lifecycle using a full-stack implementation
  • Assist Research teams in developing new models and products that will provide an advantage to the organization in the marketplace
  • Demonstrates eagerness and aptitude for rapidly adopting new frameworks, technologies, and best practices

The Team

The Quant Development team is part of Asset Management's Quantitative Research & Investment Technology group. We partner with Asset Management's Advance Strategies and Research team on cutting edge projects including systematic investment strategies, portfolio construction, risk management, alpha research, and GenAI. We build high quality, robust, and highly-scalable solutions that are used to improve Asset Management's efficiency and decision-making processes.

The base salary range for this position is $107,000-216,000 USD per year.

Placement in the range will vary based on job responsibilities and scope, geographic location, candidate's relevant experience, and other factors.

Base salary is only part of the total compensation package. Depending on the position and eligibility requirements, the offer package may also include bonus or other variable compensation.

We offer a wide range of benefits to meet your evolving needs and help you live your best life at work and at home. These benefits include comprehensive health care coverage and emotional well-being support, market-leading retirement, generous paid time off and parental leave, charitable giving employee match program, and educational assistance including student loan repayment, tuition reimbursement, and learning resources to develop your career. Note, the application window closes when the position is filled or unposted.

Please be advised that Fidelity's business is governed by the provisions of the Securities Exchange Act of 1934, the Investment Advisers Act of 1940, the Investment Company Act of 1940, ERISA, numerous state laws governing securities, investment and retirement-related financial activities and the rules and regulations of numerous self-regulatory organizations, including FINRA, among others. Those laws and regulations may restrict Fidelity from hiring and/or associating with individuals with certain Criminal Histories.

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