QP

Open to opportunities

Qohat Pretel Polo

@qohatpretelpolo

Senior functional-programming backend engineer focused on scalable, reliable systems.

What I'm looking for

I seek backend or platform roles where I can apply functional programming, design scalable systems, work with cloud-native teams, and mentor others while solving performance and reliability challenges.

I am a Senior Software Engineer with 9+ years of professional experience specializing in functional programming and backend systems. I build scalable, maintainable solutions using languages like Scala, F#, Haskell and Kotlin, and have delivered production-grade work for clients including SiriusXM, LuloBank, S4N (Starbucks project) and Xebia (formerly 47 Degrees).

I have designed real-time transaction monitoring platforms, modernized distributed systems for performance and maintainability, and consulted on cloud-native architectures across GCP and AWS. I value clean design, composable architectures, fast learning, teamwork and practical leadership.

Experience

Work history, roles, and key accomplishments

XE

Current

Sr. Scala Backend Developer

Current

Xebia

Oct 2021 - Present (4 years)

Consulted for global clients applying functional programming principles and delivered production-grade Scala backend solutions focused on scalability, performance, and reliability.

Scala Functional Programming GCP)AWS Docker Kubernetes CI CD PostgreSQL

SN

Scala Backend Developer

S4N

Jan 2021 - Oct 2021 (9 months)

Contributed to modernization of distributed systems for a Starbucks project, delivering performant and maintainable Scala services to improve system reliability.

Scala Distributed Systems Functional Programming Docker Kubernetes PostgreSQL Performance Optimization

LU

Senior Backend Developer

LuloBank

Jul 2020 - Jan 2021 (6 months)

Designed and developed a real-time transaction monitoring platform to ensure compliance and operational integrity across banking systems.

Scala Java Kafka PostgreSQL Monitoring & Compliance Distributed Systems

SC

Software Engineer

Scotiabank/Colfondos

Jun 2019 - Jul 2020 (1 year 1 month)

Developed backend solutions for financial services, contributing to system stability and feature delivery in a regulated banking environment.

Java Kotlin Databases SQL Server PostgreSQL Backend Development CI CD

CR

Freelance Mobile Developer

Creativivo

Jan 2019 - Aug 2019 (7 months)

Delivered mobile development projects as a freelancer, implementing client requirements and maintaining code quality across apps.

Mobile Development Kotlin Java Firebase REST APIs Agile Client Communication

Education

Degrees, certifications, and relevant coursework

LA

Lightbend Academy

Certification, Reactive Systems Architecture

2021 - 2021

Completed the Certified Reactive Architect certification through Lightbend Academy in December 2021.

UM

Universidad del Magdalena

Electronic Engineer, Electronic Engineering

2011 - 2016

Completed an Electronic Engineering program at Universidad del Magdalena from January 2011 to May 2016.

Tech stack

Software and tools used professionally

Jenkins

DB

MySQL

Cassandra

Gmail

Redis

Java

Kotlin

F#

Firebase

SQL

Haskell

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Qohat Pretel Polo - Sr. Scala Backend Developer - Xebia | Himalayas