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Scala Developers

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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
373+
Verified Candidates
15+
Avg. Years Experience
Top Skills
Scala Docker Kubernetes Java
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 $150-188/hr
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#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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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
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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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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
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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
Enquire
EE-6829 Lead

Scala Contractor

United Kingdom
19 years
Flexible
Employee / Freelancer

Led the development of large-scale distributed systems handling billions of transactions daily. Specialized in building high-performance backend systems for financial analytics platforms. Developed containerized microservices architectures using Docker to enhance scalability and reliability.

  • Optimized data processing pipelines for real-time analytics
  • Implemented custom Unix-based tools for system monitoring
  • Developed complex scripting solutions in Perl for data migration
Scala Python Perl Linux Unix Docker
Available in 2 weeks £120k-140k/yr
Enquire
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 €143-158/hr
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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
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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
KW-3297 Principal

Senior Backend Engineer

United States
22 years
Remote
Freelancer

Designed and implemented a distributed ledger system for financial transactions, optimizing consensus protocols for latency and throughput. Spearheaded the development of a real-time event processing pipeline, handling billions of messages per day with sub-second latency. Architected a microservices platform for a large-scale e-commerce application, focusing on scalability and fault tolerance.

  • Developed a custom RPC framework in Rust for microservices
  • Optimized JVM performance for high-frequency trading applications
  • Implemented a distributed caching system, reducing data retrieval time by 70%
  • Led migration of monolithic architecture to microservices, improving deployment speed
Rust Java Scala Apache Kafka gRPC TIBCO
Interviewing now $150-150/hr
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SF-4260 Lead

Open Source Maintainer

Portugal
8 years
Flexible
Employee / Freelancer

Led the development and maintenance of a widely-used open-source Scala library, focusing on concurrency and performance improvements. Contributed to the DIDComm protocol implementation, enhancing secure communication for decentralized applications.

  • Developed containerized applications using Docker and Scala.js
  • Implemented advanced error handling with ZIO
  • Optimized Linux-based environments for high-performance computing
Scala Scala.js Linux ZIO Docker DIDComm
Interviewing now €90k-120k/yr
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GH-2486 Principal

Founding Member & Systems Architect

United States
27 years
Remote
Employee / Freelancer

Architected large-scale, high-performance systems for financial transaction processing. Led the development of a fault-tolerant distributed ledger system. Designed and optimized complex database schemas for massive datasets.

  • Pioneered a real-time fraud detection system using machine learning
  • Integrated blockchain technology into existing financial platforms
  • Developed a custom consensus protocol for distributed databases
Scala Rust Java Python SQL Linux
Interviewing now $250k-265k/yr
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AN-6869 Senior

Fullstack developer

France
9 years
Remote
Employee / Freelancer

Developed a distributed event-driven microservices platform for financial transactions processing. Designed a high-performance, fault-tolerant data pipeline handling over 10 million events per day. Implemented a real-time analytics dashboard using Scala and Go for monitoring system metrics and user activity.

  • Optimized SQL queries for sub-second response times
  • Built RESTful APIs in Scala for e-commerce platforms
  • Integrated third-party authentication services using OAuth2
  • Implemented CI/CD pipelines with Bash and Python scripting
Scala Go Python Java SQL Bash
Available in 3+ months €65k-70k/yr
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