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Scala

Upstaff connects you with Scala engineers who know the language inside out. Our developers are adept at navigating Scala’s advanced type system, including higher-kinded types and implicits, and integrating with tools like ZIO, Play Framework, or Kafka.

For challenges in distributed systems, big data, or functional programming, Upstaff delivers the Scala expertise you need to get it done right, from concurrent applications with Akka Streams, large-scale data pipelines with Apache Spark to reactive microservices using Cats Effect and Http4s.

Scala

Meet Our Devs

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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

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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

Hire a Scala Developer with the Right Skills

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Table of Contents

Scala diagram

Scala Developers with Specialized Experience

Our Scala developers 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.

Get Matched with the Right Scala Engineer

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.

Hiring Process

Hire a Scala developer through Upstaff is straightforward:

  1. Define Your Needs: Share your project details, including the technical stack (e.g., Scala with Spark, Akka, or Cats) and domain requirements (e.g., finance or healthcare).

  2. Receive Candidate Shortlist: We select developers whose skills match your project, with no upfront cost.

  3. Interview and Assess: Review candidate profiles and conduct interviews. We can provide tailored Scala interview questions, such as those covering type inference, implicits, or Spark optimization.

  4. Onboard with Support: Once you choose a developer, we handle onboarding logistics and provide ongoing support, including technical guidance or project supervision if needed.

  5. Adjust as Needed: Scale your team or adjust engagement terms (remote, part-time, or full-time) as your project evolves.

Our developers have experience in remote work, using tools like Git, Jira, and Slack to integrate with your team, regardless of time zone.

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.

TOP 14 Tech facts and history of creation and versions about Scala Development

  • Scala was created in 2003 by Martin Odersky, a professor at École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland.
  • Scala stands for “Scalable Language” and was designed to address the limitations of Java, combining object-oriented and functional programming concepts.
  • The language is statically typed, which means that type checking is done at compile-time, resulting in safer and more efficient code.
  • Scala runs on the Java Virtual Machine (JVM) and seamlessly interoperates with existing Java code, allowing developers to leverage their Java knowledge and libraries.
  • One of Scala’s key features is its support for functional programming, including higher-order functions, immutability, and pattern matching.
  • Scala introduced the concept of traits, which are similar to interfaces but can also contain concrete method implementations, promoting code reuse and modularity.
  • With the release of Scala 2.8 in 2010, the language introduced parallel collections, enabling developers to easily write parallel and concurrent code.
  • Scala has a powerful type inference system, which allows developers to write concise code without sacrificing type safety.
  • The Play Framework, a popular web application framework, is written in Scala and leverages its features to provide a highly productive and scalable development experience.
  • Scala has a vibrant and active community, with numerous open-source libraries and frameworks available for various domains, such as Akka for concurrent and distributed systems.
  • Spark, a widely used big data processing framework, was originally developed in Scala and still provides a Scala API, showcasing the language’s suitability for data-intensive applications.
  • The Scala ecosystem includes build tools like sbt and build automation tools like ScalaTest and ScalaCheck for testing and property-based testing.
  • Scala’s expressive syntax and concise code make it a favorite among developers, leading to increased productivity and reduced code verbosity.
  • Scala has a strong presence in the industry, with companies like Twitter, LinkedIn, and Airbnb using it for their backend systems.

TOP 10 Scala Related Technologies

  • Scala

    Scala is a general-purpose programming language that combines object-oriented and functional programming features. It is designed to be concise, expressive, and scalable, making it an ideal choice for building robust and scalable software applications.

  • Akka

    Akka is a toolkit and runtime for building highly concurrent, distributed, and fault-tolerant applications on the JVM. It provides actors as a high-level abstraction for building concurrent and scalable applications, making it a popular choice for Scala software development.

  • Play Framework

    Play Framework is a web application framework built on top of Scala, providing a lightweight and reactive programming model. It offers a powerful set of features for building web applications, including built-in support for asynchronous programming, REST APIs, and real-time communication.

  • Slick

    Slick is a modern database query and access library for Scala. It provides a type-safe and reactive way to interact with databases, allowing developers to write concise and composable database queries. Slick integrates seamlessly with various database backends, making it a popular choice for Scala software development.

  • Spark

    Apache Spark is a fast and distributed computing system that provides in-memory data processing capabilities. It offers a high-level API in Scala for building big data processing applications, making it a popular choice for data-intensive Scala software development.

  • Cats

    Cats is a lightweight and modular functional programming library for Scala. It provides abstractions for working with functional programming concepts such as functors, monads, and applicative functors. Cats is widely used in Scala software development to write expressive and composable code.

  • Scalaz

    Scalaz is another popular functional programming library for Scala. It offers a rich set of abstractions and type classes for functional programming, allowing developers to write concise and expressive code. Scalaz is often used in Scala software development for its powerful functional programming features.

How and where is Scala used?

Case NameCase Description
Big Data ProcessingScala is widely used in big data processing frameworks such as Apache Spark. Its functional programming capabilities and ability to handle large-scale data sets make it a popular choice for processing and analyzing vast amounts of data efficiently. Scala’s ability to seamlessly integrate with Java libraries further enhances its usefulness in big data applications.
Web DevelopmentScala’s versatility and scalability make it well-suited for web development. Its functional programming features and expressive syntax allow developers to write concise and maintainable code. Scala frameworks like Play and Lift provide robust tools for building high-performance web applications. Scala’s compatibility with Java also enables easy integration with existing Java-based web systems.
Machine LearningScala is increasingly being used in machine learning applications. Its functional programming paradigm and support for distributed computing make it a natural fit for machine learning algorithms that require parallel processing. Popular machine learning libraries such as Apache Mahout and Deeplearning4j have Scala APIs, enabling developers to leverage Scala’s capabilities in this field.
Concurrency and ParallelismScala’s actor model, inspired by Erlang, provides a powerful concurrency model that simplifies the development of concurrent and parallel applications. Actors in Scala allow for lightweight, thread-like entities that communicate through message passing, making it easier to reason about and manage concurrent code. This feature makes Scala a compelling choice for building highly concurrent systems.
Data Analysis and VisualizationScala’s integration with popular data processing and visualization libraries, such as Apache Spark and Apache Zeppelin, makes it a valuable tool for data analysis and visualization tasks. Scala’s functional programming capabilities and support for distributed computing allow developers to efficiently process and analyze large datasets and generate meaningful visualizations.
Financial SystemsScala’s strong type system, functional programming features, and compatibility with Java make it well-suited for developing financial systems. The ability to express complex business logic in a concise and type-safe manner reduces the likelihood of errors and enhances code maintainability. Scala frameworks like Akka provide additional support for building highly scalable and fault-tolerant financial applications.
Real-time StreamingScala, along with frameworks like Apache Kafka and Apache Flink, is commonly used for real-time streaming applications. Scala’s functional programming paradigm and support for distributed computing enable developers to process and analyze streaming data in real-time with ease. Its compatibility with Java libraries and seamless integration with existing systems make it an ideal choice for building robust and scalable streaming applications.
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FAQs on Scala Development

What skills should Scala Programmers have? Arrow

Scala Programmers are proficient in functional programming (monads, functors), concurrency with Akka or ZIO, and frameworks like Play or Cats. For data roles, expertise in Spark is essential. Knowledge of Kafka, Docker, or Kubernetes is a plus for cloud-native projects. Our developers are vetted for these skills.

Can I hire a remote Scala developer? Arrow

Yes, our Scala developers are experienced in remote work, collaborating via tools like Slack, Jira, and Git to align with your team across time zones.

What is a Scala engineer, and how do they differ from other developers? Arrow

Unlike general-purpose developers, Scala engineers focus on leveraging Scala’s unique features, such as its strong static typing, pattern matching, and support for concurrent programming with Akka or ZIO. They often work on complex systems like distributed microservices, real-time data processing pipelines with Spark, or reactive applications using Cats Effect. For example, a Scala engineer might design a fault-tolerant payment system for e-commerce using Akka actors, while a Python developer might focus on scripting or simpler web apps. 

What is Scala, and what is it used for? Arrow

Scala is a general-purpose programming language combining functional and object-oriented paradigms. It’s used for scalable backend systems, data processing pipelines (especially with Apache Spark), and microservices. Companies like Twitter, LinkedIn, and Netflix use Scala for its strong type system and concurrency capabilities.

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.