Hire Freelance
Scala Developers





Built through years working with teams and engineers in the Scala ecosystem.
We specialize in functional backend systems, data platforms, and distributed infrastructure.
Focused, relevant introductions from a curated network.
Available Developers
Senior Scala Developer
Engineered distributed live-streaming systems for casino games using event sourcing with Kafka and Cassandra. Maintains multi-node production platforms with asynchronous Scala services, Kubernetes deployment, and Prometheus/Grafana-based operational monitoring.
- Implemented Akka Cluster Sharding and Akka Persistence
- Built streaming workflows with FS2 and Cats-Effect
- Developed WebSocket and gRPC service integrations
- Maintained GitLab CI/CD pipelines and Helm charts
Scala Backend Developer
Decomposed a high-traffic monolith into five standalone services using purely functional Scala, improving deployment frequency while maintaining resilience and test coverage. Delivers backend systems through production operations, including releases, on-call ownership, and postmortem-driven reliability work.
- Reduced incident recovery time from 1.4 hours to 15 minutes
- HTTP APIs built with http4s, Tapir, Circe, and protobuf
- Database access using doobie across PostgreSQL and Cassandra
- Kafka-based event-driven integrations with Redis caching
Lead Scala Engineer
- 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
Senior Scala Data Engineer
Built Scala data infrastructure for blockchain compliance and analytics, using domain modeling to structure complex transaction data. Developed Kafka-backed microservices for operational workflows, including onboarding, retention, and electric-vehicle services.
- Automated payment reconciliation workflows
- Implemented third-party data exchange service
- Extended self-exclusion across multiple jurisdictions
- Applied ZIO, Cats, and Kafka Streams
Founding Scala Software Engineer
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
Senior Scala Developer
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 Contractor
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
Senior Scala Developer
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
Application Developer - Scala
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 Developer
Specializes in building resilient real-time data pipelines using Scala and Spark, deployed on AWS infrastructure. Developed distributed systems leveraging ZIO for fault tolerance and concurrency management in cloud environments.
- Architected real-time data pipelines on AWS
- Implemented distributed systems with ZIO
- Optimized Spark jobs for large-scale data processing
Senior Scala Developer / Team Leader
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
Senior Scala Engineer
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
Senior Scala Engineer
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
Senior Scala Developer
Builds functional, event-driven services in Scala using Cats Effect, fs2, and Kafka for high-throughput distributed pipelines. Designs cloud-native systems on AWS with type-safe abstractions, event sourcing, and persistence across Cassandra, MongoDB, and relational databases.
- Scala 3 derivation macros and newtypes
- Tagless-final and Kleisli architecture
- Kafka event-sourced persistence
- Kubernetes deployment and CI/CD automation
Scala Backend Engineer, Consultant
Designed and implemented distributed backend systems for cloud platforms using Scala and Java. Specialized in optimizing real-time data processing pipelines on AWS and GCP.
- Built scalable cloud services on AWS and GCP
- Optimized real-time data processing pipelines
- Designed distributed backend systems