Senior Python Developer – API & Data Connectivity (Freelance)

KeyrusKulim, Kedah, Malaysia

1 day ago

Job description

Keyrus is an international consulting firm, specializing in the integration of data intelligence and digital solutions. With over 3,500 employees spread across 27 countries, Keyrus continues to deliver projects to a wide range of clients from various industries including banking, healthcare, FMCG, oil & gas and more.

As part of Keyrus’ solution delivery, we recruit technical consultants to complement existing client projects and support ambitious technological challenges.

About the Role

We are looking for a Senior Python Engineer specialised in building API and streaming data connectors for data‑intensive environments. You will be responsible for integrating market and alternative data sources, normalising the data, and storing it efficiently for downstream analytics and backtesting.

Key Responsibilities

Develop and maintain Python‑based API / WebSocket connectors
Integrate both market data and alternative datasets
Handle historical backfill + real‑time / streaming ingestion
Persist data to S3 / Parquet / ArcticDB (or similar columnar stores)
Ensure data quality, availability, schema consistency and metadata tracking
Work with internal quant / data consumers to align on requirements

Required Experience

6+ years experience in Python backend / API development

Strong experience with REST / WebSocket streaming integrations

Exposure to AWS (S3, IAM, Lambda / EC2) or similar cloud

Knowledge of columnar storage (Parquet, ArcticDB, Delta Lake, etc.)

Experience in data‑intensive systems (finance / trading is a plus)

Comfortable working autonomously in a remote delivery model

Nice‑to‑Have

Prefect / Airflow / orchestration tools

Experience with financial or alt‑data vendors (bonus)

Soft Skills

Able to work with evolving requirements

Strong communication in English (async collaboration)

Seniority level : Mid‑Senior level

Employment type : Contract

Job function : Information Technology

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Senior Python Developer • Kulim, Kedah, Malaysia