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Coralogix
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Riskified
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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
249+
Verified Candidates
12+
Avg. Years Experience
Top Skills
Scala PostgreSQL Kafka Docker
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

CB-2510 Lead Recently added

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 Recently added

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
#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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WF-4947 Principal

Senior Scala Developer

Poland
13 years
Remote
Employee / Freelancer

Built scalable microservices with Play Framework and Slick for data-intensive applications. Designed robust messaging solutions using RabbitMQ for asynchronous processing. Engineered efficient database schemas and optimized queries in PostgreSQL.

  • Developed real-time analytics using Kafka and Scala
  • Implemented caching strategies to improve system responsiveness
  • Conducted load testing to ensure system scalability
Scala Java Play Framework Slick PostgreSQL RabbitMQ
Interviewing now €80k-90k/yr
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
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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
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
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
NV-9828 Senior

Senior Software Engineer

France
9 years
Remote
Freelancer

Designed and implemented a real-time data ingestion pipeline using Apache Pulsar for a healthcare analytics platform. Leveraged ZIO in Scala for building highly concurrent, fault-tolerant backend services. Developed a serverless architecture on S3 for scalable storage solutions.

  • Built a reactive web application using Elm and JavaScript
  • Integrated third-party APIs for enhanced data processing capabilities
  • Optimized data serialization formats to reduce network latency
Scala ZIO Apache Pulsar S3 Elm JavaScript
Available in 1 month €90-100/hr
Enquire
AH-3623 Senior

Software Engineer

Germany
6 years
Flexible
Employee

Engineered a scalable event-driven architecture for an e-commerce application using Akka and ZIO, enhancing system resilience and fault tolerance. Developed backend services in Scala to support high-volume transaction processing, ensuring data consistency and reliability. Contributed to the design of a domain-specific language for internal tools, improving developer productivity.

  • Integrated NoSQL databases with existing Java applications
  • Built reactive systems using Play Framework and WebSockets
  • Enhanced performance of JVM-based applications with Kotlin
  • Conducted load testing, achieving 99.9% uptime during peak
Scala Java ZIO Akka Akka HTTP Akka Streams
Interviewing now $60k-80k/yr
Enquire
BA-3670 Principal

Associate Director Software Engineer

United Kingdom
24 years
Remote
Employee / Freelancer

Led the development of a cloud-native platform for enterprise resource planning. Pioneered the use of NoSQL databases to handle unstructured data in distributed systems. Designed a multi-tenancy architecture that supports thousands of concurrent users.

  • Migrated legacy systems to a microservices architecture
  • Optimized Oracle database queries for large datasets
  • Implemented data replication strategies in MongoDB
  • Authored technical whitepapers on NoSQL database use cases
Scala Java NoSQL MongoDB SQL Oracle
Available in 2 weeks £90k-120k/yr
Enquire
GD-3884 Principal

Senior Software Engineer

Canada
12 years
Remote
Employee / Freelancer

Designed and implemented distributed systems for high-frequency trading platforms, focusing on low-latency data processing. Spearheaded the integration of domain-driven design principles into microservices architecture, enhancing scalability and maintainability. Developed a real-time analytics engine processing millions of events per second using functional programming techniques.

  • Optimized JVM performance for large-scale financial applications
  • Led migration from monolithic to microservices architecture
  • Implemented event sourcing for complex transaction processing
Scala Java Functional Programming OOP DDD TDD
Available in 2 weeks Salary on request
Enquire
UV-9501 Lead

Lead Software Engineer

Spain
13 years
Remote
Employee / Freelancer

Designed and implemented a large-scale event-driven architecture for IoT data ingestion using Scala and Akka. Specialized in building concurrency models with Rust to support multi-threaded processing in high-load environments. Spearheaded the development of a real-time monitoring system for SQL databases, enhancing query performance by 30%.

  • Developed a distributed logging system using Actix and Rust.
  • Integrated TypeScript-based UI with backend services for seamless data flow.
  • Led migration of legacy systems to cloud infrastructure, improving resilience.
Rust Scala SQL TypeScript Tokio Actix
Available in 1 month Salary on request
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SA-6380 Senior

Backend Software Engineer

Netherlands
10 years
Flexible
Employee

Developed scalable messaging systems using Kafka and ActiveMQ, optimizing data flow for real-time analytics. Architected microservices with ZIO to enhance fault tolerance and concurrency control in distributed environments.

  • Designed high-throughput data pipelines with Protobuf serialization.
  • Optimized PostgreSQL queries for complex reporting applications.
  • Implemented event-driven architectures for financial transaction processing.
Scala ZIO PostgreSQL ActiveMQ Kafka Protobuf
Available in 2 weeks Salary on request
Enquire
WR-6236 Lead

Senior Scala Lead Developer

United Kingdom
12 years
Remote
Employee / Freelancer

Pioneered cloud migration strategies leveraging Amazon Cloud services and Apache Kafka. Developed streaming solutions with Akka HTTP and Akka Streams for IoT data.

  • Optimized Spark workloads for cost-effective cloud usage
  • Led agile teams through complex project lifecycles
  • Standardized API development for cross-platform compatibility
Agile Methodologies Akka HTTP Akka Streams Amazon Cloud Apache Kafka Apache Spark
Interviewing now £85k-100k/yr
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