Senior Software Engineer – Foundation
Design the core Rust systems that let our trading teams scale. This role is about low-level problem-solving, building robust frameworks from scratch, and enabling others to move faster.
About BlockTech
BlockTech is a fast-paced algorithmic trading firm facilitating global cryptocurrency derivatives and spot trading while expanding into new markets. As we continue to grow rapidly, we are looking for a Software Engineer to join our Foundation team amid our exciting scale-up phase!
You will
Build & optimize: Design, develop, and maintain high-reliability, low-latency, and high-throughput foundational systems that enable our trading and technology teams to scale efficiently.
Ingest & aggregate: Collect trading business data with minimal latency impact and ingest both public and private exchange information into our trading system.
Store & stream: Develop and maintain infrastructure for real-time data aggregation and long-term storage, as well as our Kafka-based messaging systems.
Collaborate & support: Work closely with multiple teams, assisting them in integrating with and making the most of our foundational systems.
Innovate: Drive projects from concept to deployment with full ownership, and explore new tools, frameworks, and approaches to keep our infrastructure best-in-class.
The Foundation team develops core software infrastructure (libraries, frameworks, and systems) for BlockTech, solving common problems and lending its expertise to enable other teams to stay focused on their respective domains. They own, develop, and configure a wide variety of critical, high-reliability software, ranging from low-level ultra-low-latency shared memory IPC libraries to high-throughput data buses and data aggregation systems including Kafka, NATS, PostgreSQL, and Iceberg. They work primarily in Rust, but also use Python and SQL.
If you thrive on low-level problem-solving, building robust frameworks from scratch, and enabling others to move faster, this role is for you.
What We're Looking For
Essential:
5+ years of experience as a Software Engineer, with a strong focus on systems-level optimisation and awareness of hardware constraints
Proficiency in Rust (or C/C++ with the willingness to work primarily in Rust)
Relevant domain experience: a background in trading and/or hands-on experience with the data infrastructure we rely on, such as Postgres, ClickHouse, Kafka, Redpanda, Iceberg, and/or NATS, ideally self-hosted rather than via managed or cloud services
Solid understanding of distributed systems
Strong problem-solving skills and a very strong sense of end-to-end ownership
Bonus points for:
Familiarity with observability tooling such as Grafana
Understanding of WebSockets, compiler engineering, embedded programming, and/or systems security
How we work
This is an on-site role in our Amsterdam office, built around a high degree of autonomy and end-to-end ownership. You will have hard problems to own from concept through to production, and the freedom to solve them your way. It is a strong fit for people who are energised by deep technical challenges, working with a wide variety of technologies, and a high level of responsibility.
What is in it for you?
A full-time position in a relaxed and modern office in Amsterdam
Competitive compensation consisting of a base salary combined with a very attractive bonus plan based on individual and company performance
Outstanding performance is rewarded with the opportunity to buy into the trading fund
Pension plan, company laptop, and reimbursement of your internet costs at home
An extensive in-house training program and an annual learning & development budget
The opportunity to work at the forefront of automated trading using state-of-the-art technology, in an environment that embraces AI to both accelerate productivity and advance our systems and models
Gym membership reimbursement and the opportunity to engage in various sports during working hours, including kickboxing, CrossFit, fitness, and soccer
Regular social events, including weekly Friday drinks, monthly outings, quarterly sports competitions and bi-annual trips abroad
Daily breakfast and warm lunch. Additionally, snacks and drinks are provided throughout the day
For internationals: All-in relocation package and Dutch classes
Our culture
At our core, we are a team of passionate trading and tech enthusiasts committed to revolutionizing trading through automation. Our collaborative approach ensures that everyone contributes to achieving our ambitious goals.
In this role, you will be both challenged and stretched, with ample opportunities for growth and development, both within and beyond your main responsibilities.
We invest in our people by offering competitive compensation and benefits, fostering innovation, and celebrating success. Our commitment to personal development transcends traditional norms; we provide an equal playing field, promote reverse leadership, and offer boundless growth opportunities for all our employees.
Join us to unlock your potential and drive innovation in the exciting world of algorithmic trading.

Job requirements
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Your journey to joining BlockTech.
We believe in a clear and efficient application process that lets you showcase your skills, experience our culture, and discover if BlockTech is the right fit for you. Here’s what to expect:
Apply & connect
Start with an introductory conversation to get to know each other, discuss your application and determine your role.
Showcase your skills
Complete role-specific assessments (quantitative, cognitive, or technical) to demonstrate your strengths.
Evaluation rounds
Take part in behavioral and technical interviews on-site to evaluate your problem-solving skills and critical thinking.
Seal the deal
After completing our assessments, you’ve earned your place on the team. Congratulations and welcome aboard!
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