Senior Python Developer (Freelance/Contract)

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About Client:

An organisation based in San Francisco, California, is the world’s leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems.

It helps customers in two ways: Accelerating AI research with elite engineering, data, and infrastructure talent. Enabling enterprises to transform proofs of concept into production-grade AI systems that drive measurable business results.

Role Overview:

We’re looking for a world-class Python Developer — someone who lives and breathes code, optimizes for performance, and has proven mastery on competitive programming or data challenge platforms like LeetCode, Codeforces, HackerRank, or Kaggle. This is a pure coding role — where you’ll tackle challenging engineering problems, design scalable systems, and collaborate with leading AI research teams.

What You’ll Do:

• Build, test, and optimize high-performance Python systems used in large-scale AI and data pipelines.
• Design and maintain modular, clean, and production-ready Python codebases.
• Collaborate with cross-functional teams (data, infra, and research engineers) to deliver reliable backend components.
• Write efficient, maintainable, and testable code with strong focus on algorithms and data structures.
• Stay current with modern Python tools, frameworks, and best practices.

Required Qualifications

• Bachelor’s or Master’s in Computer Science, Software Engineering, or a related field.
• 4+ years of professional experience writing Python in production environments.
• Expert-level proficiency in Python and core libraries (Pandas, NumPy, AsyncIO, FastAPI, or similar).
• Proven track record on coding platforms — e.g., top percentile or strong rating on LeetCode, Codeforces, HackerRank, or Kaggle competitions.
• Deep understanding of data structures, algorithms, and problem-solving at scale.
• Experience with system design, clean architecture, and performance optimization.
• Working level Proficiency in ML/DS

Preferred Qualifications

• Strong experience with distributed systems, APIs, or data processing pipelines.
• Familiarity with cloud environments (AWS, GCP, or Azure) and CI/CD workflows.
• Experience in open-source contributions or building developer tools.
• Comfort working in fast-paced, research-driven environments.

Bonus

• Recognized performance in Kaggle, Codeforces, or ICPC/TopCoder contests.
• Deep curiosity for performance tuning, scalability, and elegant code design.
• Perks of Freelancing.
• Work fully remotely, from anywhere.
• Collaborate with world-class AI labs and frontier research companies.
• Tackle real engineering challenges with high autonomy and ownership.

Offer Details

Commitment: 40 hours/week with 4-hour PST overlap with PST zone.

Type: Contractor (no medical/paid leave).

Duration: 2 months (start date: immediately).

How to Apply:

Equal Opportunity Employer:

Unlock Rewards:

If you're not available or interested in this opportunity, please pass this along to anyone in your network who might be a good fit and interested in our open positions. VARITE offers a Candidate Referral program, where you'll receive a one-time referral bonus based on the following scale if the referred candidate completes a three-month assignment with VARITE.

Exp Req - Referral Bonu

0 - 2 Yrs. - INR 5,000

2 - 6 Yrs. - INR 7,500

6 + Yrs. - INR 10,000

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