Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Backend Python Developer

$60 - $90 per hour

Alignerr

Backend Python Developer

$60-90/hr Remote Freelance CODING

About the Role

What if your Python expertise could directly influence how the next generation of AI understands, writes, and reasons about code? We're looking for experienced Backend Python Developers to work alongside the world's leading AI research labs — evaluating AI-generated code, building complex algorithmic challenges, and helping push the boundaries of what AI can do.

This is a fully remote, flexible contract role designed for seasoned Python engineers who want to put their skills to work on something genuinely cutting-edge.

  • Organization: Alignerr
  • Type: Hourly Contract
  • Location: Remote
  • Commitment: 10–40 hours/week
What You'll Do
  • Review and evaluate AI-generated Python code for correctness, efficiency, and adherence to PEP 8 and production-quality standards
  • Design and develop complex backend algorithmic solutions and data processing scripts that challenge AI reasoning at its limits
  • Write clear, human-readable explanations for backend logic, architectural decisions, and code behaviour
  • Identify edge cases, security vulnerabilities, and logical flaws in AI-generated API and backend logic
  • Provide structured, detailed feedback that directly shapes how AI models learn to write better code
Who You Are
  • Deep Python expertise — you've written production-level Python and it shows
  • 3–5+ years of professional backend development experience
  • Solid command of modern Python frameworks including Django, Flask, or FastAPI
  • Strong grasp of advanced language features, design patterns, and software architecture principles
  • Exceptional written communication skills — you can explain complex technical concepts clearly and concisely
  • Degree in Computer Science or a related technical field, or equivalent professional experience
Nice to Have
  • Prior experience with data annotation, RLHF, or AI evaluation workflows
  • Familiarity with API security best practices and vulnerability identification
  • Background in algorithm design, competitive programming, or systems-level development
  • Experience writing technical documentation or code reviews at scale
Why Join Us
  • Work on genuinely cutting-edge AI projects alongside leading research labs and teams
  • Fully remote and flexible — work when and where it suits you, on your own schedule
  • Freelance autonomy with the substance of meaningful, high-impact technical work
  • Make a direct, tangible impact on how AI understands and generates code used by millions
  • Training and onboarding support provided — hit the ground running from day one
  • Potential for ongoing work and contract extension as new AI projects launch

Apply now

Vacancy posted 2 days ago
Similar jobs that could be interesting for youBased on the Backend Python Developer in United States vacancy
  •  ...Computer SoftwareClient: WiproContact: Meghana GorusuCompany: SRI Tech SolutionsPython Rest API Backend DeveloperLocation: Austin, TXOnly FTE/W2 contractingBackend Python Developer with Rest APIMinimum of 4-5 years of experience in building solutions in Python.Experience... 
    Suggested
    Hourly pay
    Full time

    SRI Tech

    Austin, TX
    4 days ago
  • $72 per hour

     ...Rutherford, NJWork Model: HybridEmployment Type: CONTRACTOROur client, a leading financial services company, is hiring a Python Backend Developer on a contract to hire basis. Job ID# 85349Work Location: Rutherford, NJWork Model: HybridResponsibilities:Architect, Design... 
    Suggested
    Contract work

    TSR Consulting

    Rutherford, NJ
    8 days ago
  • $87.12k - $181.5k

     ...If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.We are currently seeking a Python Backend Developer - Hybrid/Onsite to join our team in Charlotte, North Carolina (US-NC), United States (US).Python Backend DeveloperAbout... 
    Suggested
    Full time
    Temporary work
    Work at office
    Remote work
    Flexible hours

    NTT

    Charlotte, NC
    5 days ago
  •  ...Backend Python Developer Location: Charlotte, NC - Hybrid (3 days onsite) Summary: 10+ years US experience. This is core back end python development. Candidate will be required to give an example of each of the four on this list: Candidate must: Have... 
    Suggested

    Software Technology Inc

    Charlotte, NC
    3 days ago
  •  ...Python AWS Team Lead Apex Systems is looking for a Technical Team Lead that has hands on experience with Python and AWS! Job Title...  ...skills are required Must be able to mentor other developers Must Have: Strong logic, algorithm, and analytical skills... 
    Suggested
    Remote work

    Software Technology Inc

    United States
    3 days ago
  •  ...Job Title Must Have • 10 to 15 years experience • Hands-on experience in Python programming • Good analytical and problem-solving abilities • Experience in Agile/Scrum based project executions Nice to Have • Knowledge on Cloud App services, Load Balancer, Application... 

    Omni Inclusive

    San Ramon, CA
    2 days ago
  •  ...Python Backend Developer Location: Hybrid onsite (3 days onsite in Mclean, VA) Duration: 9-12+ months Contract Job Description: Experience with AWS Cloud - EC2/S3/Lambda etc.. Experience with Data Lake Experience with DBs- Oracle/DB2/Mongo/SQL Server... 
    Contract work

    Samprasoft

    McLean, VA
    4 days ago
  •  ...fixes to uphold the software quality standards Develop user training programs, documentation, and...  ...Skill and Experience Experience in Java Backend with proficiency in Java, springboot and microservices. Experience in Python, Gitlab, Terraform.Preferred Skill and Experience... 
    Full time
    Temporary work
    Relocation

    Infosys Technologies

    Reston, VA
    7 days ago
  •  ...Role: Senior Backend Python Developer Location: NYC, NY - onsite Type: Contract Mode of Interview: In person Client Interview (F2F) Mandatory Skills : Python, Aws Step Functions , SNS Step Function Role Description: The role... 
    Contract work

    VBeyond

    New York, NY
    3 days ago
  •  ...Backend Python Developer Job Title Backend Python Developer (GIS & Data Integration) Job Description We are seeking a Backend Python Developer to build APIs, data processing pipelines, GIS integrations, and environmental model automation... 

    TriOptus LLC

    Montpelier, VT
    4 days ago
  •  ...Python Developer Responsibilities Need 10+ consultant only. • Python Developer, you will be responsible for developing software using Object-Oriented Design patterns. • Backend Python Developers with N-Tier architecture & OOP experience in Jersey City • Lead the... 

    RIT Solutions

    Alpharetta, GA
    1 day ago
  •  ...Role: Python Developer Location: Remote Duration: 12+ Months Contract We are seeking a Backend Python Developer with 4+ years of experience building and supporting scalable backend applications. Key Skills: # Bachelor's degree in Computer... 
    Contract work
    Remote work

    Apex Informatics

    San Jose, CA
    1 day ago
  • Product Owner for Conga Contract Lifecycle Management We are seeking a skilled Product Owner to support ongoing enhancements and integration of Conga Contract Lifecycle Management (CLM) and Opportunity and Pipeline Management (with SFDC). This individual will play a...
    Full time
    Contract work

    Epsilon Solutions Ltd

    United States
    5 days ago
  •  ...Python Backend Developer At Pearster, we're connecting with experienced Python Backend Developers for upcoming opportunities with international clients. We're looking for backend engineers with strong Python experience who enjoy building reliable, scalable solutions... 
    Remote work
    Worldwide

    Pearster

    United States
    2 days ago
  •  ...Python Backend Developer Location: USA/Remote Duration: 6+ Months Job Description: Microservices Development Python API, NodeJS backend development and Unit testing framework Authentication/Autization API, Secure Coding practices, OpenAPI, Swaggar (OAS... 
    Work experience placement
    Remote work
    Flexible hours

    Zortech Solutions

    United States
    3 days ago
  •  ...for designing, building, and implementing scalable backend applications and microservices within the Technology...  ...Qualifications/Skills/Experience 5–7 years of experience developing backend systems and services using Python. Strong proficiency in Python and related libraries... 

    Rose International

    Rutherford, NJ
    2 days ago
  •  ...Backend Python Developer We're growing rapidly and are looking for a Senior Backend Developer with Python Application Developer experience. At CGI, you'll make an impact for some of the largest organizations and brands in the world while enjoying unparalleled career... 
    Work at office
    Local area

    CGI

    Dallas, TX
    5 days ago
  •  ...Backend Python Developer Day 1 relocation-All 5 days onsite at Bridgeton, MO Responsibilities Lead the Design and Develop Backend Systems: Create and maintain server-side logic, ensuring high performance and scalability. API Development... 
    Relocation

    United IT Solutions

    Bridgeton, MO
    2 days ago
  •  ...Title: Backend Python Developer *Local to Plano, TX Description: Responsibilities: - Design and implement scalable backend systems using Python and Java - Develop and maintain RESTful APIs - Work with SQL and NoSQL databases, including PostgreSQL... 
    Local area
    Flexible hours

    3B Staffing LLC

    Murphy, TX
    2 days ago
  •  ...Description: Application Developer - Data Protection Services The mission of the Data Protection (DP) group is to implement...  ...usage of the Firm's data to incident responders. This Python Backend Developer position is with the Data Protection Dev Squad.... 

    3B Staffing LLC

    Alpharetta, GA
    3 days ago
  •  ...A Python Backend Developer Job Title: Python Backend Developer Experience: 2-5 Years (or customize as needed) Location: [City/Remote/Hybrid] Employment Type: Full-time Job Summary We are looking for a skilled Python Backend Developer to design... 
    Full time
    Remote work

    Ova Technologies

    Alpharetta, GA
    3 days ago
  •  ...Python/SQL/Backend DeveloperFirst IT SolutionsJob DescriptionA successful candidate must be comfortable in UNIX shell and in scripting languages...  ...he will be expected to review code, provide consulting to developers on other projects and mentor more junior staff.The candidate... 

    Tech Tammina

    New York, NY
    5 days ago
  •  ...message the job poster from ACL Digital This role involves developing robust backend services and integrating them into a scalable system architecture...  .... Key Responsibilities Design, develop, and maintain Python-based backend services. Build and integrate scalable APIs and... 
    Contract work

    ACL Digital

    San Jose, CA
    4 days ago
  • Role Description We're looking for a proactive, technically strong Senior Backend Python Developer to join our team. You'll work on a strategic project for one of our banking clients, designing and maintaining the microservices that power our AI platform — including model... 
    Full time
    Remote work

    Muttdata

    Remote
    a month ago
  •  ...reliable data integrations, and well-designed backend services support critical business...  ...How You Will Make An Impact Design, develop, test, and maintain scalable server-side applications and services using Python. Build and enhance RESTful APIs that connect... 
    Long term contract

    Axiom Path

    Charlotte, NC
    25 days ago
  •  ...Computer Science or a related field. ~Strong Python coding skills - 7+ years. ~2+ years of...  ...LLM systems. ~Experience building backend APIs with FastAPI, async patterns, rate...  ...(prompts, tokens, cost, latency); ~Develop prompt management with versioning, fallbacks... 
    Flexible hours

    Intellectsoft

    Remote
    a month ago
  •  ...At Workana, we are looking for a Senior Backend Developer (Golang/Python) to support our client in the creation and maintenance of the technology stack of their products. These products allow access to and integration of information from institutions such as social security... 
    Temporary work

    Workana

    Remote
    a month ago
  •  ...Job Description Job Description Overview CTG is seeking to fill a Backend Developer - SQL, .NET, Python opening for our client in Philadelphia, PA. Location: Philadelphia, PA Duration: 12 months Overview: The Backend Developer will provide design... 
    Work experience placement

    Computer Task Group, Inc

    Philadelphia, PA
    12 days ago
  •  ...Full job description Key skills are given below: ~ Python – Strong proficiency with at least one web framework (Django, Flask, FAST) • SQL & Database Management – PostgreSQL, MySQL • NoSQL Databases – Cassandra • Message Brokers – Apache Kafka • Linux OS... 
    Flexible hours

    Cloud Analytics Technologies LLC

    Plano, TX
    6 days ago
  • Citi seeks an intermediate Programmer Analyst to contribute to backend SQL, Java, Unix/Python application development in a hybrid role based in Mississauga, Canada. The role focuses on building, testing, and optimizing data-driven applications that support trading and... 

    Citi

    New York, NY
    2 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Backend Python Developer. Be the first to apply!