Soyombo Bat-Erdene — Senior Software Engineer / iOS Developer

Expertise in iOS (8.5 yr.), Mobile Apps (8.5 yr.).

Last verified on September, 2026

Core Skills

Bio Summary

- Over 8 years of experience in iOS development and software engineering across IT and trading sectors.
- Senior Software Engineer at erxes Inc, specializing in PostgreSQL, Apollo GraphQL, and TypeScript.
- Proven track record in delivering custom software solutions for financial services and transportation industries.
- Skilled in enterprise management software, web-based solutions, and database design.
- Strong commitment to timely, budget-conscious project delivery with a focus on customer value.

Technical Skills

Programming Languages	Swift, TypeScript
JavaScript Frameworks	Next.js
JavaScript Libraries and Tools	Vite
Databases & Management Systems / ORM	MongoDB, PostgreSQL, Redis
SDK / API and Integrations	GraphQL
Operating Systems	iOS
Message/Queue/Task Brokers	RabbitMQ
iOS Libraries and Tools	SwiftUI
Other Technical Skills	ReactNative.js

Work Experience

Senior Software Engineer - erxes Inc (erxes Inc Software Solutions Development)

Duration: November 2019 - September 2025

Summary:

Development of software solutions for various business models including financial services and transportation
The company provides custom and off-the-shelf application development, enterprise management software, web-based solutions, and database design and implementation

Responsibilities:

Developing and maintaining software applications.
Contributing to enterprise management and web-based solution projects.
Ensuring timely delivery and value to customers.

Technologies: PostgreSQL, Apollo GraphQL, TypeScript, MongoDB, Redis, Docker, Node.js, React, Swift, React-Native, Vite, Next.js

iOS Developer - erxes Inc (erxes Inc iOS Application Development)

Duration: October 2017 - September 2019

Summary: Development of iOS applications as part of erxes Inc's software solutions for various business sectors, focusing on improving customer experience and delivering value on time and within budget.

Responsibilities:

Designing and developing iOS applications.
Collaborating with cross-functional teams to integrate iOS apps with backend services.

Technologies: iOS

Senior Software Engineer - Argun Trade LLC (Software Development Projects)

Duration: January 2016 - October 2017

Summary:

Software development projects at Argun Trade LLC, a company based in Ulaanbaatar, Mongolia
Specific project details are not provided

Responsibilities:

Developing software solutions as per company requirements.
Participating in software design and implementation.

Chief Operating Officer - Kaizen Mongolia LLC (Operations Management)

Duration: September 2014 - March 2015

Summary: Oversaw operations at Kaizen Mongolia LLC, contributing to the company's management and strategic planning.

Responsibilities:

Managing daily operations.
Implementing strategic initiatives.

iOS Developer - Kaizen Mongolia LLC (iOS Application Development)

Duration: November 2010 - September 2014

Summary: Development of iOS applications at Kaizen Mongolia LLC over nearly four years.

Responsibilities:

Designing and developing iOS applications.
Maintaining and updating existing iOS apps.

Technologies: iOS

Web Developer - Digital Eyes LLC (Web Development Projects)

Duration: April 2010 - November 2010

Summary: Web development projects at Digital Eyes LLC, focusing on creating and maintaining web applications.

Responsibilities:

Developing and maintaining websites and web applications.
Collaborating with design and development teams.

Education

Computer Science and Management School

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