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Coralogix
ZF
Riskified
Hypervolt
Paidy
Tiko
Writer
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Ledger
CNH
SiriusXM
Leonteq
Arteris
ITV
Linklaters
ClearScore
Guardian
VakantieDiscounter
IOHK
Coralogix
ZF
Riskified
Hypervolt
Paidy
Tiko
Writer
Commercetools
Ledger
CNH
SiriusXM
Leonteq
Arteris
ITV
Linklaters
ClearScore
Guardian
VakantieDiscounter
IOHK
283+
Verified Candidates
13+
Avg. Years Experience
Top Skills
Scala Kafka Java Kubernetes
Deep Scala Network

Built through years working with teams and engineers in the Scala ecosystem.

Deep Technical Focus

We specialize in functional backend systems, data platforms, and distributed infrastructure.

Signal Over Volume

Focused, relevant introductions from a curated network.

Available Developers

JF-4303 Senior Recently added

Application Developer - Scala

United Kingdom
10 years
Flexible
Employee / Freelancer

Developed distributed systems for financial trading platforms, optimizing real-time data processing with Scala. Spearheaded the integration of functional programming paradigms into legacy systems, enhancing performance and reliability. Designed and implemented RESTful APIs for high-traffic web services, ensuring seamless data exchange.

  • Architected microservices for a large-scale e-commerce application
  • Optimized SQL Server queries to improve database performance by 40%
  • Led a migration project from ASP.NET to Scala-based architecture
  • Implemented machine learning models using Python for predictive analytics
Scala Functional Programming Java Python ASP.NET SQL Server
Interviewing now £50k-90k/yr
Enquire
AH-8221 Lead Recently added

Senior Scala Developer

Poland
8 years
Remote
Employee

Architected a distributed ledger system using Akka and ZIO, ensuring high availability and fault tolerance. Led a team in developing a scalable API gateway leveraging Tapir and Cats Effect for a fintech application.

  • Optimized database interactions with Doobie
  • Designed a reactive event-driven system
  • Integrated third-party services using Scala
Scala ZIO Akka Cats Effect Tapir Doobie
Interviewing now €72k-85k/yr
Enquire
#HIRED Lead Recently hired

Lead Scala Engineer

Spain
6 years
Hybrid
Employee
Experienced software engineer with strong background in distributed systems and cloud-native architecture. Proven track record delivering production systems at scale. Skilled in designing fault-tolerant services, optimising CI/CD pipelines, and mentoring junior developers across cross-functional teams.
  • Led migration of monolithic system to microservices architecture
  • Built high-throughput data pipeline processing 1M+ events per second
  • Designed and implemented real-time monitoring and alerting platform
Scala Spark Flink Airflow GCP Python Delta Lake Docker
Hired Salary: $XXX,XXX
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CB-2510 Lead

Senior Scala engineer

Czech Republic
13 years
Remote
Employee

Architected a robust event-driven architecture for large-scale IoT data ingestion. Enhanced a supply chain management platform with Scala and Kafka for real-time analytics. Developed a high-throughput messaging system using Typelevel libraries.

  • Implemented PostgreSQL optimizations for high-volume data storage
  • Utilized Go for microservices orchestration
  • Contributed to open-source Scala libraries
  • Configured Linux servers for enhanced application performance
Scala Typelevel PostgreSQL Kafka Linux Go
Available in 2 weeks €70k-85k/yr
Enquire
AL-9947 Principal

Senior Scala Developer / Team Leader

Poland
12 years
Remote
Employee / Freelancer

Led the development of a distributed event-driven microservices architecture using Akka and Play. Specialized in high-performance, non-blocking I/O operations and asynchronous data processing. Designed scalable RESTful APIs for large-scale enterprise applications, optimizing database interactions with Slick.

  • Implemented custom streaming solutions using Akka Streams
  • Optimized performance of real-time data pipelines
  • Architected distributed systems for fintech applications
Scala Akka Play Http4s Cats Slick
Available in 1 month Salary on request
Enquire
LG-3784 Mid-level

Scala Software Engineer

Portugal
4 years
Remote
Employee / Freelancer

Specialized in building microservices architectures for e-commerce platforms, focusing on scalability and fault tolerance. Developed RESTful APIs with Akka, ensuring high availability and responsiveness. Engineered seamless data integration processes with PostgreSQL for real-time analytics.

  • Migrated monolithic applications to microservices for improved performance.
  • Enhanced API security using OAuth2 and JWT standards.
  • Automated deployment pipelines with Docker and Kubernetes.
Scala Akka ZIO Microservices Architecture REST APIs PostgreSQL
Interviewing now €52k-60k/yr
Enquire
JT-3345 Lead

Staff Engineer

United Kingdom
17 years
Hybrid
Employee

Architected large-scale distributed systems for financial analytics, leveraging Scala and Java for high-performance computation. Designed machine learning pipelines in Python and R to optimize risk assessment models. Led the migration of legacy systems to cloud-native infrastructure, improving scalability and resilience.

  • Implemented Go-based microservices for cloud-native deployments
  • Developed data visualization tools with JavaScript
  • Enhanced fault tolerance in distributed systems
Scala Java Python R JavaScript Go
Interviewing now £160k-190k/yr
Enquire
WK-9239 Principal

Senior Kotlin backend developer

Sweden
25 years
Hybrid
Employee / Freelancer

Designed and implemented large-scale microservices architectures using Scala for financial transaction systems, ensuring high availability and fault tolerance. Developed real-time data processing pipelines for a cloud-based analytics platform, optimizing for low latency and high throughput. Contributed to the development of reactive systems, enhancing system responsiveness and scalability in distributed environments.

  • Led migration of legacy Java systems to Kotlin microservices
  • Implemented event-driven architecture for a retail analytics platform
  • Optimized cloud resource allocation, reducing operational costs by 30%
  • Developed secure API gateways for fintech applications
Java Scala Kotlin Microservices Reactive architecture Cloud
Available in 1 month €100k-140k/yr
Enquire
EJ-8987 Lead

Sr. Software Engineer

Spain
10 years
Flexible
Employee / Freelancer

Built scalable microservices architectures deployed on Kubernetes, optimizing for high availability and fault tolerance. Developed distributed systems for real-time data processing in the IoT domain, leveraging Go and Scala. Spearheaded efforts in implementing CI/CD pipelines for seamless deployment and integration.

  • Implemented event-driven architecture using Kafka and RabbitMQ
  • Enhanced application performance through advanced caching strategies
  • Designed RESTful APIs with comprehensive testing frameworks
Go Scala Java JavaScript Elm Kubernetes
Available in 1 month Salary on request
Enquire
SS-9357 Mid-level

Développeuse Backend Scala

France
4 years
Flexible
Employee

Specializes in building scalable backend services with Scala and Kafka. Developed fault-tolerant systems using Play Framework and http4s.

  • Integrated Cats Effect for functional programming paradigms
  • Optimized message processing with Kafka Streams
  • Designed microservices architecture for high availability
Scala Play Framework Spring Boot Kafka Cats http4s
Interviewing now $60k-60k/yr
Enquire
EH-3800 Principal

Senior Scala Developer

Netherlands
19 years
Flexible
Employee / Freelancer

Built distributed microservices architecture handling millions of requests per second. Architected real-time data processing pipelines using Akka and Kafka for high-throughput applications. Designed and deployed scalable cloud infrastructure on AWS for global reach applications.

  • Implemented event-driven systems with Akka Streams
  • Optimized JVM performance for large-scale enterprise applications
  • Developed multi-region failover strategies on AWS
Scala Java Python Akka Kafka AWS
Interviewing now €50k-80k/yr
Enquire
AH-5398 Senior

Software Engineer

Portugal
5 years
Flexible
Employee

Engineered cloud-native applications on AWS with infrastructure as code using Terraform. Developed microservices in Scala and Java, focusing on high concurrency and robust fault tolerance. Automated CI/CD pipelines for seamless deployments across multiple environments.

  • Designed scalable backend systems with AWS Lambda
  • Implemented RESTful APIs in Kotlin for seamless integrations
  • Managed container orchestration with Kubernetes on AWS
Scala Java Kotlin Python AWS Terraform
Interviewing now €50k-60k/yr
Enquire
LJ-6969 Principal

Senior Software Engineer & Solution Architect

Germany
20 years
Remote
Employee / Freelancer

Architected distributed systems for real-time financial data processing, achieving sub-millisecond latency. Designed scalable microservices architecture for cloud-native applications, integrating Rust and Scala for high-performance computing. Spearheaded development of a domain-specific language for automated financial reporting, leveraging F# for functional programming paradigms.

  • Implemented event-driven architecture for IoT data ingestion.
  • Optimized .NET Core applications for cloud environments.
  • Developed consensus algorithms for blockchain-based systems.
C# F# Scala Rust .NET .NET Core
€100k-120k/yr
Enquire
SA-7506 Lead

Server Software Engineer

Ireland
14 years
Remote
Employee / Freelancer

Architected and led the development of a distributed microservices platform using Scala and Spring Boot, handling millions of transactions daily. Specialized in designing high-performance server-side applications for financial services, ensuring low-latency data processing. Built a custom RPC framework using Thrift to enhance cross-service communication.

  • Implemented a robust CI/CD pipeline with Jenkins
  • Pioneered a cross-language service integration with Ruby
  • Enhanced system scalability to support 5x user growth
Scala Java Spring Spring Boot Thrift Ruby
Available in 2 weeks Salary on request
Enquire
KK-5038 Lead

Senior Backend Engineer

Netherlands
18 years
Flexible
Employee / Freelancer

Led the development of a distributed event-driven architecture using Akka for a high-frequency trading platform, optimizing latency to sub-millisecond levels. Developed and deployed a real-time analytics pipeline with Kafka, processing millions of events per second for a large-scale e-commerce platform. Spearheaded the migration of legacy systems to functional programming paradigms, significantly improving code maintainability and performance.

  • Architected microservices for scalable financial transaction systems
  • Implemented machine learning models for fraud detection in Scala
  • Designed RESTful APIs supporting thousands of concurrent users
  • Optimized JVM performance for large-scale data processing tasks
Scala Java Python Functional Programming Akka Kafka
Available in 2 weeks €70k-85k/yr
Enquire

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