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Senior Software Engineer

STX Group
Posted June 6, 2025

Amsterdam, North Holland

Full Time

Job Description

A Senior Software Engineer responsible for developing and scaling core systems that support environmental commodities trading, focusing on building resilient, scalable, and efficient digital infrastructure to enable global decarbonization efforts.

Responsibilities

  • Build and scale core systems for pricing, execution, reconciliation, and operational workflows across various asset classes.
  • Develop resilient, high-performing, fault-tolerant, and compliant systems supporting real-time workflows with strong auditability.
  • Contribute across full technology stack, including backend services, infrastructure, and front-end applications.
  • Collaborate with trading, legal, risk, and operations teams to create well-architected solutions for real-world challenges.
  • Mentor team members, influence architectural decisions, and promote a culture of technical excellence and delivery.
  • Explore and implement emerging technologies such as LLMs and real-time analytics to enhance system capabilities.

Requirements

  • Six (6) years of software development experience, ideally in fintech, market infrastructure, or B2B SaaS at scale.
  • Strong proficiency in TypeScript, React, AWS, and serverless architectures, with hands-on experience with Kinesis, Kafka, and Kubernetes.
  • Skilled in backend development using Python or Node.js.
  • Familiarity with infrastructure-as-code tools such as CDK or Terraform.
  • Solid understanding of distributed systems, event-driven architecture, and modern CI/CD practices.
  • Ability to design and implement scalable services for pricing, execution, reconciliation, and operational workflows across carbon, renewables, and other asset classes.
  • Experience developing systems that are high-performing, fault-tolerant, and compliant supporting real-time workflows and strong auditability.
  • Ability to work across backend services, infrastructure, and front-end applications, bringing a product mindset to every layer of the stack.
  • Experience collaborating with Trading, Legal, Risk, and Operations teams to solve real-world challenges through well-architected solutions.
  • Ability to mentor others, shape architectural decisions, and contribute to a culture of technical excellence, pragmatism, and delivery.

Benefits

  • Compensation/salary range not specified
  • Work schedule: Hybrid work model
  • Work environment perks: Collaborative culture, mentorship opportunities, exposure to emerging technologies like LLMs and real-time analytics
  • Additional benefits: Opportunities to work on high-impact projects in environmental commodities and decarbonization strategies, cross-functional collaboration with trading, legal, risk, and operations teams, professional development in technical excellence and innovation

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