Upstaff’s Guide to Hire Scala Developer in 2025

Scala

Need a vetted Scala expert for big data or distributed systems? Upstaff connects you with top Akka, Spark, or Cats Effect talent in 72 hours. Beat the 2025 hiring scala programmers chaos with our proven process.

Explore Upstaff’s Data Engineer and Back-end Developer Hiring Guide

Scala

What You’re Searching For

Hiring a Scala developer can be challenging due to the language’s specialized nature. You’re likely searching for answers to find trusted talent, understand costs, or avoid project delays. This guide is built for you.

Why Hire Scala Developers with Upstaff?

Scala’s specialized skills power big data and fintech in 2025. Upstaff’s manual vetting (92% retention rate) cuts through AI resume noise to deliver elite talent. Learn about 2025 trends.

How to Hire a Scala Developer: Step-by-Step

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Follow this expert guide to hire a reliable Scala developer for your big data or distributed systems project. Read more tips in our blog.

2025 Scala Trend

Scala demand in big data grew 35% due to Spark integration—perfect for AI and fintech (LinkedIn, 2025).

1. Define Your Project Needs

Determine if you need a Scala developer for functional programming (Cats Effect), big data (Spark), or distributed systems (Akka). Specify scope, timeline, and budget. Example: Need a Spark developer for a 4-month data analytics project, $10,000 budget.

2. Write a Clear Job Description

A strong job post attracts top Scala talent. Example:

  • Title: Senior Scala Developer (Spark)
  • Role: Build scalable data pipelines for analytics platform.
  • Skills: Scala, Spark, Akka, SBT, Git; Kafka a plus.
  • Rate: $80-120/hour, remote.

Download our free job description template.

3. Interview Effectively

Ask targeted questions to assess Scala expertise:

  • Question: “How do you use Scala’s type system to prevent errors?”
    Good Answer: Mentions type safety, pattern matching, or algebraic data types for robust code.
  • Question: “Explain how you’d optimize a Spark job.”
    Good Answer: Discusses partitioning, caching, or broadcast variables to reduce shuffle costs.
  • Question: “How do you handle concurrency in Akka?”
    Good Answer: Explains actors, message passing, and supervision strategies.

Use coding tests to verify skills, like writing a small Akka actor system. See 15+ Scala interview questions.

4. Avoid Common Pitfalls

Steer clear of these mistakes:

  • Overlooking Functional Skills: Ensure expertise in Scala’s functional paradigms.
  • Unclear Scope: Define deliverables to avoid delays (e.g., “Build a Spark pipeline”).
  • Cost-Only Focus: Low rates may lead to inexperienced hires.
  • Ignoring Team Fit: Verify communication and Agile experience.

Expert Insight

“Scala developers excel in complex systems, but you need to test their functional programming skills and framework knowledge to ensure they can deliver scalable solutions.” – Elena V., Senior Recruiter at HireJS Guide

Post Hiring Support (Extra offer):

  • Technical Oversight: Optional supervision to ensure your Scala developer aligns with project goals, such as maintaining type safety or optimizing Spark jobs.

  • Tooling and Integration Support: Guidance on integrating Scala with your existing stack, like setting up Kafka streams or deploying with Docker.

  • Ongoing Assistance: Our team is available to resolve issues, from debugging complex monadic chains to coordinating with your in-house engineers.

Hire Scala developer with Upstaff.com

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Manager
Maria Lapko
Global Partnership Manager

Upstaff Success Story: Scala in Action

How Upstaff helped a fintech startup, inspired by our work with Accenture, hire a Scala expert in 4 days.

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Meet Upstaff’s Vetted Scala Developers

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Grid Layout Row Layout
Haskell 3yr.
Scala 2yr.
Plutus 2yr.
Akka
Cardano
Objective-C
OCaml
Python
Ruby
Swift
NumPy
Akka Actors
Akka Streams
Clojure
Scala Cats
Scala SBT
Matplotlib
Pandas
SciPy
Seaborn
Ruby on Rails
RVM
AWS ElasticSearch
PostgreSQL
Apache Mesos
Apache Subversion
Gitflow
Bash
Regexp
BugZilla
Docker
GraphQL
RESTful API
Jenkins
Jira
Kafka
ZeroMQ
Waterfall
Akka HTTP
Akka Stream
Coq
Emacs Lisp
Marathon
monocle
Plutarch
Plutus Core
portage
pyenv
Skikit-learn
Skipy
...

- 3 years of experience in Plutus / Cardano smart contracts developer role (Plutus Core, Plutarch) - Cardano ecosystem knowledge - Haskell, Scala, Cabal/Stack, GADTs/Type families, Generics, Servant, lenses, mtl, free monads - senior-level professional - Functional programming with FRP, Redux, Event sourcing, Category theory - OOP, OOD, UML, Design patterns, SOLID, DI. TDD, BDD, Unit, functional, and integration testing - 14 years of experience in software engineering

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Seniority Senior (5-10 years)
Location Ukraine
Scala 5yr.
Python
Java
AWS
AI
Akka
Apache Spark
Apache Flink
Scala SBT
Scala Tapir
Scalatest
Hibernate
Spring
Spring Boot
React
Cassandra
Clickhouse
MongoDB
MySQL
Oracle Database
PostGIS
PostgreSQL
Redis
RocksDB
Slick database query
SQL
Azure
GCP
Amazon RDS
AWS S3
AWS SQS
GCE
Agile
microservices
REST
Scrum
Apache ActiveMQ
Kafka
Apache Maven
JUnit
Apache Tomcat
Docker
Kubernetes
Facebook Auth
GitLab CI
Gradle
Helm
Jenkins
Grafana
Prometheus
Splunk
Release Management
Data pipeline design
...

- 12 years of experience in backend development, including leadership roles in cross-functional teams; - Expertise in Scala, Python, and Java (with knowledge of functional programming principles); - Experience in system architecture improvements, leading teams, and developing scalable solutions; - Expertise in PostgreSQL, Oracle DB, MongoDB, and SQL; - Cloud environments such as AWS including performance and scalability optimization; - Docker and Kubernetes for container orchestration; - Apache Kafka for building event-driven architectures; - Led AI-driven projects in areas such as resume parsing, payroll automation, and learning management;

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Seniority Expert (10+ years)
Location Malaga, Spain
Scala
Java
AWS
Akka
Apache Spark
Lagom
Monix
Play Framework
Scala Slick
Spring
Scala Cats
Scala Pureconfig
Scala SBT
Scala Tapir
Apache Hive
Flyway
HDFS
MongoDB
PostgreSQL
Slick database query
Atlassian Trello
Jira
GitHub
GitLab
...
Seniority Middle (3-5 years)
Location Ternopil, Ukraine
Scala
NLP
Akka
Apache Spark
Akka Actors
Akka Streams
Cluster
Scala SBT
Scalatest
Apache Airflow
Apache Hadoop
AWS ElasticSearch
PostgreSQL
Slick database query
AWS
GCP
Haddop
Microsoft Azure API
ArgoCD
CI/CD
GitLab CI
Helm
Travis CI
GitLab
HTTP
Kerberos
Kafka
RabbitMQ
Keycloak
Swagger
Kubernetes
Terraform
Observer
Responsive Design
Unreal Engine
...

Software Engineer with proficiency in data engineering, specializing in backend development and data processing. Accrued expertise in building and maintaining scalable data systems using technologies such as Scala, Akka, SBT, ScalaTest, Elasticsearch, RabbitMQ, Kubernetes, and cloud platforms like AWS and Google Cloud. Holds a solid foundation in computer science with a Master's degree in Software Engineering, ongoing Ph.D. studies, and advanced certifications. Demonstrates strong proficiency in English, underpinned by international experience. Adept at incorporating CI/CD practices, contributing to all stages of the software development lifecycle. Track record of enhancing querying capabilities through native language text processing and executing complex CI/CD pipelines. Distinguished by technical agility, consistently delivering improvements in processing flows and back-end systems.

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Seniority Senior (5-10 years)
Location Ukraine
Scala
Java
C#
Groovy
JavaScript
Lua
Akka
Play Framework
Angular
jQuery
React
EJB
Freemarker
Jackson
Java EE
Java Reflection
Java Servlets
Java StAX API
JAX-RS
JDBC
JMS
JPA
JSON Patch
JSON Schema
MBeans
RESTeasy
SAX
Entity Framework
Gson
Hibernate
Spring
XPATH
XSLT
Scala SBT
GeoJSON
AWS ElasticSearch
MongoDB
ORM
PostgreSQL
Redis
Slick database query
AWS EC2
AWS Kinesis
AWS Lambda
AWS RDS (Amazon Relational Database Service)
AWS S3
AWS SES (Amazon Simple Email Service)
Apache ActiveMQ
Kafka
Apache HTTP Server
WildFly
Apache Maven
Mockito
Apache NetBeans
IntelliJ IDEA
Web Services
Apache Subversion
BitBucket
Git
GitLab
Docker
FTP
HTTP
WebSockets
Gradle
Keycloak
OpenAPI
Winforms
Linux
Windows
SOAP
CDI
Deadbolt
ebMS
Groovy type checking extensions
Java EE 7
Java IO
Java Scripting Engine
JMS etc
JParsec
JPQL
MTOM
OpenEJB
QpidJMS
Qpid Proton
Redis Lua scripting
Twirl
Undertow
...

- 5+ years of experience in IT - Upper-intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Belarus
Scala
SQL
AWS
C
C++
JavaScript
Akka
Apache Spark
Play Framework
Akka Actors
Akka Framework
Akka Streams
Alpakka
Scala Cats
Scala Guice
Scala Specs2
Scalatest
JVM
PHPUnit
AWS Athena
Apache Hadoop
AWS DynamoDB
Cassandra
Hadoop ecosystem
MongoDB
MySQL
NoSQL
PostgreSQL
Slick database query
AWS Cloudformation
AWS CodePipeline
AWS EC2
AWS Glue
AWS Quicksight
AWS S3
CasperJS
Jasmine
Karma
Mock
QUnit
Selenium Webdriver
DevPartner
DevPartner Studio
Eclipse
IntelliJ IDEA
Visual Studio
Docker
Kubernetes
Terraform
FreeBSD
Linux
macOS
Windows
Git
MS SourceSafe
SVN
Grafana
Kafka
MetaTrader
OOD
OOP
Protobuf
...

- Professional engineer with proven ability to develop efficient solutions for complex problems, including cloud and Data projects; - Microservice architecture expertise Lightbend Reactive Architecture, Infrastructure as Code expertise in AWS CloudFormation, CI/CD (Gitlab, AWS CodePipeline), Cloud expertise - AWS; -Engineer with the ability to develop efficient solutions for complex problems, including cloud projects, AWS Services (Amazon Quicksight, EC2, S3, Glue), Databricks, Kinesis; - API development RESTful, Swagger, GraphQL, API Gateway, Microservice architecture expertise - Commercial experience in IT since 2013; - Lightbend Reactive Architecture, Infrastructure as Code expertise in AWS CloudFormation, CI/CD (Gitlab, AWS CodePipeline); - System level programming, OOP and OOD, functional programming; Stress on profiling and optimizing code, writing reliable code; - System-level programming, OOP and OOD, functional programming; - Profiling and optimizing JVM code; - Experience with product documentation and supporting products; - Upper-intermediate English; - Available ASAP.

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Seniority Senior (5-10 years)
Location Ternopil, Ukraine
AWS big data services 5yr.
Microsoft Azure 3yr.
Python
ETL
AWS ML (Amazon Machine learning services)
Keras
Machine Learning
OpenCV
TensorFlow
Theano
C#
C++
Scala
Apache Spark
Apache Spark 2
Big Data Fundamentals via PySpark
Deep Learning in Python
Linear Classifiers in Python
Pandas
PySpark
.NET
.NET Core
.NET Framework
Apache Airflow
Apache Hive
Apache Oozie 4
Data Analysis
Superset
Apache Hadoop
AWS Database
dbt
HDP
Microsoft SQL Server
pgSQL
PostgreSQL
Snowflake
SQL
AWS
GCP
AWS Quicksight
AWS Storage
GCP AI
GCP Big Data services
Kafka
Kubernetes
OpenZeppelin
Qt Framework
YARN 3
SPLL
...

- Data Engineer with a Ph.D. degree in Measurement methods, Master of industrial automation - 16+ years experience with data-driven projects - Strong background in statistics, machine learning, AI, and predictive modeling of big data sets. - AWS Certified Data Analytics. AWS Certified Cloud Practitioner. Microsoft Azure services. - Experience in ETL operations and data curation - PostgreSQL, SQL, Microsoft SQL, MySQL, Snowflake - Big Data Fundamentals via PySpark, Google Cloud, AWS. - Python, Scala, C#, C++ - Skills and knowledge to design and build analytics reports, from data preparation to visualization in BI systems.

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Seniority Expert (10+ years)
Location Ukraine
C++
Rust
C
C#
Haskell
Java
Objective-C
Python
Ruby
Scala
Swift
Scala Cats
relational databases
SQLite
Docker
RabbitMQ
Unix
...

- Experienced C++/Rust/Mobile/Scala Developer with a demonstrated history of working in the financial/media services industries. - Skilled in C/C++. rust, Java, Mobile Applications, Python/Ruby, Haskell. Strong engineering professional graduated from Dnipropetrovs'kij Nacional'nij University. - Intermediate English

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Seniority Senior (5-10 years)
Location Binz, Switzerland

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Average Scala Tech Radar

Talk to Our Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager

Scala Developer Costs with Upstaff in 2025

Upstaff’s global talent saves up to 50% vs. US rates (BLS, Statista, 2025).

Trusted by Businesses
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Infopulse
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Valtech
Unisoft
Diceus
Ciklum
Infopulse
Adidas
What Upstaff Clients and Scala Developers Say. Hear from clients who hired Scala talent with Upstaff’s vetted process.

What Scala Developers Say

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Scala diagram

Insights from the Scala community to guide your hiring.

“Scala’s type safety and Akka actors make concurrent systems a breeze—perfect for fintech.” – u/ScalaPro, Reddit

Upstaff’s Scala Hiring Resources

Download Upstaff’s Scala Developer Hiring Checklist to streamline your process.

Table of Contents

Talk to Our Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager

FAQs on Scala Development

How long does it take to hire a Scala developer with Upstaff? Arrow

Upstaff matches you with vetted Scala talent in 72 hours, with 5-10 vetting calls per candidate.

Why choose Upstaff over other platforms? Arrow

Upstaff’s manual vetting outperforms AI platforms by 35% in client satisfaction. Compare platforms.

Why choose Scala over Java? Arrow

Scala excels in concurrency and big data but is rarer. Compare in our blog.

What’s the demand for Scala in 2025? Arrow

Up 35% in big data and fintech (LinkedIn, 2025).

How does Upstaff ensure quality? Arrow

Our 92% retention rate comes from rigorous vetting (Upstaff data).

What’s Upstaff’s Scala Skill Score? Arrow

Scala scores 92/100 for big data projects, based on demand and vetting rigor.

Our Scala programmers have built systems for industries like finance, e-commerce, and telecom, working on projects such as:

  • Real-time trading platforms using Akka for low-latency concurrency.

  • Data pipelines with Spark and Scala for processing terabytes of data.

  • RESTful APIs and microservices with Play Framework or Http4s.

  • Event-driven architectures with Kafka and ZIO for fault-tolerant systems.

Can I hire part-time Scala developers? Arrow

Yes, Upstaff offers flexible freelance or part-time options.

How does Upstaff vet Scala developers? Arrow

We test expertise in Akka, Spark, or Cats Effect with coding challenges. See Akka vetting.

At Upstaff, we start by analyzing your project’s technical needs (if that’s optimize a Spark-based ETL pipeline, build a reactive API with Cats Effect, or integrate Scala with Kubernetes for cloud-native deployment). Our team will identifiy developers with the exact skills and domain experience you need, such as:

  • Akka for actor-based concurrency or ZIO for effectful programming.

  • Spark and Scala for big data analytics or machine learning pipelines.

  • Frameworks like Play, Finagle, or Http4s for backend development.

This matching process is free. We will provide  candidate profiles, including their experience with specific Scala libraries and tools, so you can make an informed choice.

What is the paradigm of the Scala programming language? Arrow

Scala supports both functional and object-oriented programming paradigms, making it a hybrid language.

Scala Paradigms

In its functional paradigm, developers use immutable data, higher-order functions, and concepts like monads, functors, and applicatives to write concise, predictable code. For example, libraries like Cats and Scalaz enable functional programming patterns for handling side effects or composing computations. In its object-oriented paradigm, Scala uses traits, classes, and objects to support encapsulation and inheritance, with features like mixins for flexible code reuse. This dual nature allows Scala engineers to choose the best approach for the task—functional for data pipelines with Spark, or object-oriented for modular backend systems with Play. This flexibility makes Scala ideal for projects requiring both scalability and maintainability, such as real-time analytics or distributed APIs.