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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
375+
Verified Candidates
14+
Avg. Years Experience
Top Skills
Scala Java Kubernetes PostgreSQL
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

AF-2531 Lead Recently added

Senior Scala Engineer

Italy
15 years
Remote
Employee / Freelancer

Led the development of a high-performance trading platform using Scala and ZIO, optimizing execution speed and reliability. Spearheaded the migration of legacy systems to modern, functional programming paradigms to enhance maintainability and scalability.

  • Integrated Java and Scala codebases for seamless interoperability
  • Developed custom concurrency models in ZIO for reactive systems
  • Enhanced C++ systems for real-time data processing
  • Built complex data transformation pipelines in financial domain
Scala Java C++ C# JavaScript ZIO
Available in 1 month Salary on request
Enquire
NZ-3031 Principal Recently added

Senior Scala Developer

Netherlands
20 years
Remote
Freelancer

Architected distributed systems with Scala and Kafka, achieving high throughput and fault tolerance. Built containerized applications orchestrated with Kubernetes, enhancing deployment efficiency across cloud environments. Designed infrastructure as code using Terraform, streamlining resource provisioning and management.

  • Implemented event-driven architectures with ZIO.
  • Migrated legacy systems to cloud-native microservices.
  • Developed custom middleware solutions for data streaming pipelines.
Scala ZIO Kafka Kubernetes Terraform Java
Available in 2 months $100-125/hr
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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NZ-2211 Lead

Scala Engineer

United Kingdom
15 years
Flexible
Employee

Designed and implemented a high-frequency trading platform handling millions of transactions daily, optimizing for low-latency execution. Developed a distributed data processing system using Scala Cats for functional programming paradigms to streamline financial data analysis. Led the architecture of a real-time recommendation engine, integrating machine learning models for personalized user experiences.

  • Built a microservices architecture with Spring Boot and Spring Batch
  • Integrated Angular-based front-end with Scala back-end systems
  • Optimized JVM performance for large-scale data processing applications
  • Enhanced concurrency management in multi-threaded environments
Scala Scala Cats Java Spring Boot Spring Batch Angular
Interviewing now Salary on request
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AB-6248 Principal

Senior Software Engineer

United States
22 years
Remote
Employee

Developed high-performance distributed systems focusing on real-time data processing and analytics, leveraging Apache DataFusion for optimized query execution. Architected scalable microservices for financial transaction processing, handling millions of operations per second with low latency. Contributed to the design of a cross-platform compiler infrastructure, enhancing multi-language interoperability and performance.

  • Implemented consensus protocols for distributed databases.
  • Optimized machine learning pipelines using Python and Rust.
  • Led the migration of monolithic applications to cloud-native architectures.
  • Enhanced JVM performance for large-scale enterprise applications.
Rust Scala Python Java C Apache DataFusion
Available in 2 weeks Salary on request
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JA-5752 Senior

Senior Software Engineer

Poland
6 years
Flexible
Employee / Freelancer

Developed high-throughput microservices for financial transaction processing, leveraging Akka for distributed systems. Built a real-time analytics platform using Scala and functional programming paradigms, optimizing data pipelines for low-latency performance. Contributed to the design of a domain-specific language for data transformation tasks, enhancing data manipulation capabilities.

  • Implemented reactive systems with Akka and Cats for scalability.
  • Optimized microservices architecture for concurrent data processing.
  • Designed fault-tolerant systems handling millions of requests daily.
  • Integrated functional programming concepts to improve code maintainability.
Scala Akka Cats Microservices OOP FP
Available in 1 month $85k-100k/yr
Enquire
NF-1357 Lead

Senior Software Engineer

Poland
14 years
Remote
Employee / Freelancer

Designed and implemented distributed systems for processing high-frequency financial transactions, optimizing both throughput and fault tolerance. Developed a real-time data ingestion pipeline using Kafka and Scala, handling millions of events per second with minimal latency. Led the migration of a monolithic architecture to a microservices-based ecosystem, enhancing system scalability and maintainability.

  • Integrated Cats Effect for asynchronous programming in distributed applications.
  • Optimized database interactions with Doobie, improving query performance by 40%.
  • Built custom sbt plugins to streamline build processes in CI/CD pipelines.
  • Architected event-driven systems with Kafka for large-scale data processing.
Scala Cats Cats Effect sbt Kafka Doobie
Interviewing now Salary on request
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AJ-7856 Senior

Independent Software Engineer

France
7 years
Remote
Employee

Developed a distributed event-driven microservices architecture for a high-traffic e-commerce platform using Scala and functional programming paradigms. Designed and optimized complex data pipelines for real-time analytics in the retail sector, leveraging Scala's concurrency features. Built a custom ETL framework for processing large datasets in a cloud-based environment, integrating seamlessly with Redshift and Postgres.

  • Implemented a custom authentication module using Scala and Java.
  • Optimized query performance for multi-terabyte Redshift databases.
  • Built real-time dashboards using Angular for live data visualization.
  • Designed a fault-tolerant messaging system for financial transactions.
Scala Functional programming Java Angular Postgres Redshift
Interviewing now €60k-80k/yr
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AE-4003 Lead

Senior Staff Application Engineer

United Kingdom
13 years
Flexible
Employee / Freelancer

Specialized in building high-availability distributed systems for financial transaction processing, handling millions of transactions per second. Developed a microservices architecture for a real-time analytics platform, optimizing data throughput and latency. Implemented consensus protocols to ensure data integrity across a multi-region cloud infrastructure.

  • Architected a scalable event-driven messaging system using Kafka
  • Designed RESTful APIs for a global e-commerce platform
  • Integrated Rust for performance-critical components in data pipelines
  • Optimized SQL queries for a 10TB data warehouse
Scala SQL Typescript Java Rust Backend
Available in 1 month Salary on request
Enquire
AP-1643 Lead

Lead Software Engineer

Switzerland
10 years
Hybrid
Employee

Designed and implemented distributed systems for high-frequency trading platforms, focusing on low-latency data processing using Akka and Scala. Architected microservices for a large-scale e-commerce application, leveraging Vert.x to handle millions of concurrent transactions efficiently. Developed a real-time analytics engine for IoT data streams, optimizing performance on JVM environments.

  • Optimized JVM performance for large-scale data processing applications
  • Integrated Node.js with Scala for hybrid application architectures
  • Implemented complex event processing with Akka Streams
  • Built RESTful APIs using TypeScript for scalable web services
Scala Java Backend Architecture Distributed Systems Blockchain Infrastructure REST APIs
Interviewing now $150k-180k/yr
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EL-6427 Principal

Senior Scala Engineer

Switzerland
15 years
Remote
Employee / Freelancer

Architected event-driven systems leveraging Event Sourcing and CQRS to ensure data consistency. Pioneered the use of Scala for building scalable, fault-tolerant distributed applications. Designed and implemented microservices to support large-scale fintech platforms.

  • Integrated TypeScript for enhanced front-end type safety
  • Developed domain-driven design models for enterprise applications
  • Implemented Dart-based solutions for cross-platform mobile applications
Scala Java TypeScript Dart Event Sourcing CQRS
Interviewing now £140k-150k/yr
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NL-1941 Principal

Senior Scala Developer

Netherlands
25 years
Flexible
Freelancer

Specialized in designing distributed systems with a focus on real-time data processing pipelines. Led the development of a high-performance, event-driven architecture leveraging Scala and ZIO for fault tolerance and scalability. Optimized cross-service communication using gRPC for microservices in a large-scale enterprise environment.

  • Implemented custom Tapir-based API gateway solutions
  • Architected SQL-driven data analytics platforms
  • Developed concurrent processing frameworks with Java
  • Enhanced system resilience with advanced ZIO constructs
Scala ZIO Java SQL gRPC Tapir
Interviewing now €95-105/hr
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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
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JF-3412 Senior

Founding Scala Software Engineer

France
7 years
Employee / Freelancer

Co-founded a startup focusing on distributed systems and microservices with Scala. Designed APIs for scalable data-driven applications. Integrated complex SQL queries for data-intensive backend processes.

  • Co-founded startup in distributed systems
  • Designed scalable APIs
  • Integrated complex SQL queries
Python Scala SQL API Design Microservices Distributed Systems
Salary on request
Enquire
JT-4782 Senior

Senior Scala Developer

Iran
10 years
Remote
Employee / Freelancer

Developed a high-throughput real-time data processing pipeline using Scala and ZIO 2, optimizing performance for financial analytics. Architected a microservices-based e-commerce platform leveraging Play Framework, ensuring scalability and fault tolerance. Implemented client-side interactions with Scala.js, enhancing responsiveness in a complex web application.

  • Integrated Slick for seamless database interactions
  • Optimized legacy systems for concurrency and low latency
  • Crafted domain-specific languages for internal tools
Scala Scala 2.13 ZIO 2 Play Framework Scala.js Slick
Available in 1 month $80k-120k/yr
Enquire

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