endorsedCompleted

Backend Optimization and Automated QA for Mobile Fintech Platform

Services Covered:

Custom Software Development • Software QA and Testing

Industry

Software Development

Duration

5 months

Budget

200K - 999K

Start Date

1 July 2025

Team Size

1-5 Employees

Engagement Model

Nearshore

Project Capability Score (PCS)

82/100

Strong

Project Capability Score (PCS) estimates how capable Pynest is of successfully delivering a project like this, based on its past experience, track record, and ability to handle similar work. Learn more about PCS

Client

Lambda Factor

Wrocław, Poland

Project Summary

Pynest provided software development and QA support for a mobile fintech platform by optimizing Python-based backend services and implementing automated QA for iOS and Android apps. Their work produced backend performance improvements, an expanded test automation suite, and a steady decline in production defects. The team delivered project visibility without micromanagement and handled scope changes quickly and professionally.

Key Challenges

Scale development capabilities to meet a strict launch deadline without compromising on quality or features

Project Deliverables

Backend performance optimization and deep code refactoring
Asynchronous programming optimizations and architectural improvements
Implementation of an automated testing framework for iOS and Android
Expansion of test automation and QA documentation

Project Solution

Pynest reinforced and optimized Python-based backend services through deep code refactoring, asynchronous programming optimizations, and architectural improvements to improve processing efficiency and reliability under load. They also designed and implemented a robust automated testing framework for the cross-platform mobile application (iOS and Android), expanding test automation coverage and supporting QA documentation and processes. The team provided transparent project management and rapid formalization of scope changes.

Project Outcome

Robust expansion of test automation
Significant backend performance improvements during peak traffic
Steady decline in production defects
Flawless launch that met all adoption targets

Platforms

Mobile

Tech Stack

Python
iOS
Android

Client Endorsement

Overall Review Rating

Timeliness

Cost Rating

Willing to Refer

Quality of Deliverables

“Pynest's work resulted in backend performance improvements and a steady decline in production defects. The team provided project visibility without micromanaging, consistently updated the client on progress, and handled scope changes agilely. Pynest's ability to build custom solutions stood out.”
Agnessa Tomashowa
BDM
Date: 02/16/2026