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Coralogix
ZF
Riskified
Hypervolt
Paidy
Tiko
Writer
Commercetools
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
228+
Verified Candidates
12+
Avg. Years Experience
Top Skills
Scala PostgreSQL AWS Kafka
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
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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
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EX-6886 Mid-level

Scala/C# Developer

France
3 years
Flexible
Employee / Freelancer

Built real-time data processing pipelines using Akka and Kafka, integrating with Protocol Buffers for efficient data serialization. Developed backend systems supporting high-frequency trading platforms.

  • Implemented event-driven architectures with Scala and Akka
  • Enhanced system reliability with robust error-handling in C#
  • Optimized cross-platform integration with Java and Scala
Scala Akka Protocol Buffers Kafka C# Java
Available in 3+ months 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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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
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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
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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
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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
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AQ-6124 Lead

Product Engineer

Germany
18 years
Flexible
Employee / Freelancer

Led development of cross-platform applications, leveraging Scala and Java for backend services. Spearheaded the migration of legacy systems to modern microservices architectures.

  • Integrated Node.js services with existing Java infrastructures
  • Automated deployment pipelines using TypeScript and Python
  • Enhanced scalability with Kotlin-based microservices
Scala Java Node.js TypeScript Kotlin Python
Available in 1 month Salary on request
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EE-6982 Lead

Solution Architect

United States
15 years
Remote
Employee / Freelancer

Architected enterprise-level solutions utilizing REST and SOAP services for seamless integration across legacy and modern systems. Designed and implemented cloud-native applications with an emphasis on scalability and maintainability. Pioneered the adoption of microservices in large-scale e-commerce platforms, enhancing modularity and system resilience.

  • Migrated monolithic applications to microservices architecture
  • Integrated cross-platform APIs for heterogeneous environments
  • Developed custom middleware solutions for data synchronization
Java Scala JavaScript Python REST SOAP
Interviewing now Salary on request
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