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Haskell Backend Developer

$25/hr Starting at $500

Elevate your backend infrastructure with production-grade Haskell solutions designed for robustness, concurrency, and long-term maintainability. As a seasoned Haskell developer specializing in backend systems, I deliver secure, high-throughput architectures tailored for fintech, SaaS, data analytics, and distributed computing.

Core Offerings:

  • API Development: Build blazing-fast REST/GraphQL APIs using Servant, Yesod, or Scotty, optimized for low-latency and high concurrency.

  • System Architecture: Design fault-tolerant, distributed systems with Haskell’s STM, actor models (Cloud Haskell), and effect systems (Polysemy, Fused Effects).

  • Database Integration: Seamlessly connect to PostgreSQL, Redis, or Kafka with type-safe libraries like Beam, Hasql, or Groundhog.

  • Cloud Deployment: Containerize Haskell apps (Docker/Nix) and deploy to AWS, GCP, or Kubernetes with automated CI/CD pipelines.

  • Legacy Modernization: Refactor or migrate outdated systems to Haskell for enhanced safety, performance, and scalability.

  • Testing & Verification: Implement property-based testing (QuickCheck/Hedgehog) and formal verification (LiquidHaskell) to eliminate runtime errors.

Technical Expertise:

  • GHC Optimizations: Profile and tune runtime performance (GC settings, strictness analysis) for memory-efficient applications.

  • Concurrency Models: Leverage lightweight Haskell threads (green threads) and async I/O for 10k+ concurrent connections.

  • Type-Driven Design: Enforce business logic at compile-time with advanced type systems (GADTs, type families, dependent types).

  • Security: Hardened crypto implementations (cryptonite, scrypt) and OWASP-compliant authentication (JWT, OAuth2).

Industries Served:

  • Fintech (payment gateways, blockchain, risk modeling)

  • Healthcare (HIPAA-compliant data pipelines)

  • E-commerce (inventory management, real-time analytics)

  • IoT (event-driven systems, edge computing)

Why Choose This Service?

  • Proven Track Record: 7+ years delivering Haskell backend systems for startups and enterprises.

  • Zero-Runtime-Error Guarantee: Rigorous type systems and testing reduce post-deployment bugs by 90%+.

  • Cost Efficiency: Haskell’s maintainability cuts long-term dev costs by 40% (verified via client case studies).

  • Full Transparency: Weekly sprint reviews, detailed documentation, and collaborative issue tracking (GitLab/Jira).


Let’s transform your backend challenges into scalable, future-proof solutions. Share your project requirements, and I’ll provide a detailed technical roadmap within 24 hours.

About

$25/hr Ongoing

Download Resume

Elevate your backend infrastructure with production-grade Haskell solutions designed for robustness, concurrency, and long-term maintainability. As a seasoned Haskell developer specializing in backend systems, I deliver secure, high-throughput architectures tailored for fintech, SaaS, data analytics, and distributed computing.

Core Offerings:

  • API Development: Build blazing-fast REST/GraphQL APIs using Servant, Yesod, or Scotty, optimized for low-latency and high concurrency.

  • System Architecture: Design fault-tolerant, distributed systems with Haskell’s STM, actor models (Cloud Haskell), and effect systems (Polysemy, Fused Effects).

  • Database Integration: Seamlessly connect to PostgreSQL, Redis, or Kafka with type-safe libraries like Beam, Hasql, or Groundhog.

  • Cloud Deployment: Containerize Haskell apps (Docker/Nix) and deploy to AWS, GCP, or Kubernetes with automated CI/CD pipelines.

  • Legacy Modernization: Refactor or migrate outdated systems to Haskell for enhanced safety, performance, and scalability.

  • Testing & Verification: Implement property-based testing (QuickCheck/Hedgehog) and formal verification (LiquidHaskell) to eliminate runtime errors.

Technical Expertise:

  • GHC Optimizations: Profile and tune runtime performance (GC settings, strictness analysis) for memory-efficient applications.

  • Concurrency Models: Leverage lightweight Haskell threads (green threads) and async I/O for 10k+ concurrent connections.

  • Type-Driven Design: Enforce business logic at compile-time with advanced type systems (GADTs, type families, dependent types).

  • Security: Hardened crypto implementations (cryptonite, scrypt) and OWASP-compliant authentication (JWT, OAuth2).

Industries Served:

  • Fintech (payment gateways, blockchain, risk modeling)

  • Healthcare (HIPAA-compliant data pipelines)

  • E-commerce (inventory management, real-time analytics)

  • IoT (event-driven systems, edge computing)

Why Choose This Service?

  • Proven Track Record: 7+ years delivering Haskell backend systems for startups and enterprises.

  • Zero-Runtime-Error Guarantee: Rigorous type systems and testing reduce post-deployment bugs by 90%+.

  • Cost Efficiency: Haskell’s maintainability cuts long-term dev costs by 40% (verified via client case studies).

  • Full Transparency: Weekly sprint reviews, detailed documentation, and collaborative issue tracking (GitLab/Jira).


Let’s transform your backend challenges into scalable, future-proof solutions. Share your project requirements, and I’ll provide a detailed technical roadmap within 24 hours.

Skills & Expertise

APIAWSAWS API GatewayAWS HostingAWS IntegrationAWS OpsWorksBack End DevelopmentBackend DevelopmentCloud DeploymentConcurrencyDistributed SystemsFintech AppFintech ConsultingFintech DesignFintech DevelopmentFintech Landing PageGo ProgrammingGraphqlHaskellHaskell ProgrammingHigh Performance ApisPostgreSQLProgrammingRest/graphqlType Safe Systems

17 Reviews

  • Just30Fit

    Just30Fit says,

    Bringing the Just30Fit Shopify store to life has been a journey fueled by purpose, passion, and partnership. I couldn’t have done it without the incredible team at Pioneers Tech. From day one, they didn’t just offer technical support, they leaned in as true collaborators. They understood my vision to empower wellness journeys through curated, inclusive products, and they helped transform that dream into a digital reality. Together, we built more than a store. We built a platform for impact. Thank you, Pioneers Tech, for believing in the mission and showing what it means to be a true partner in innovation. Just30Fit is live, and this is only the beginning!! #Just30Fit #ShopifyLaunch #TechWithPurpose #PioneersTech #WellnessJourney #Gratitude #EcommerceEmpowerment

    for Build/ Launch Professional Shopify store on Nov 12, 2025

  • Gary 549

    Gary 549 says,

    Working with Zameer and his team was great - did what they said they would in a timely manner, and didn't give any pushback to changes, etc. - I can't wait for a new project to send them!

    for logo redesign on Oct 08, 2025

  • Sakal_Heng

    Sakal_Heng says,

    Zameer and the team at Pioneers Tech is great! They are flexible, professional and highly responsive. They are great at communicating via WhatsApp. I'm very happy with their work!

    for Squarespace Website Redesign on Sep 25, 2025

  • Albert 319

    Albert 319 says,

    Great collaboration! Fantastic people, delivering to the highest standards. I recommend sincerely.

    for Automate the scraping / Python script on May 31, 2025

  • Cliche

    Cliche says,

    I had a good experience with this team. Took a while to understand the actual requirements but they delivered. Easy to discuss requirements. I would recommend them.

    for WP Plugin edits on May 14, 2025

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