Tech Lead, TM Algorithms — On-Chain & Offchain

Solidus Labs; Polska; On-site; PLN 320,000 - 540,000; Full time

Job summary

Solidus Labs is seeking an Algos Tech Lead for Transaction Monitoring. Own TM detection algorithms and end-to-end product engineering, leading a global team to deliver high-throughput, low-latency solutions across on-chain and off-chain components.

You will define architecture, data models, and tuning thresholds while partnering with Product and compliance to meet regulatory requirements.

Qualifications

• 8+ years backend engineering experience with at least 2 years in a tech lead role.
• Strong knowledge of financial ecosystem and compliance concepts.
• Hands-on with data structures, high-performance concurrent code, and code review.

Responsibilities

• Lead, mentor, and grow TM engineering team—sprint delivery and on-call health.
• Own offchain TM detection suite implementation.
• Drive on-chain TM development at wallet and protocol levels.
• Defend system architecture, data models, detection logic, and tuning frameworks.
• Collaborate with Global Product to translate regulatory needs into plans.
• Shape architecture for resource sharing across TM and TS.
• Coordinate with compliance and customer success on alert quality and tuning.

Skills

Backend engineering

Team leadership

Financial domain

Data structures

Architecture

Streaming systems

Communication

AI coding

Tools

Kafka

ClickHouse

Snowflake

Distributed processing

Job description

Algos Tech Lead, Transaction Monitoring

• Engineering
• EU

Description

About the role

At Solidus Labs, we are shaping the financial markets of tomorrow by providing cutting-edge, real-time trade surveillance and transaction monitoring technology for regulated and crypto-native financial institutions. We protect investors, enhance transparency, and ensure regulatory compliance across traditional assets, prediction markets, and crypto.

We're hiring a Tech Lead to join our Algorithms team and own the Transaction Monitoring (TM) detection algorithms, product engineering effort end to end.

What you'll own :

• Lead, mentor, and grow the existing TM global engineering team - sprint delivery, code quality, on-call health.
• Own implementation of our offchain TM detection suite.
• Drive the build-out of on-chain TM - wallet-level and protocol-level monitoring, and the data pipelines behind it.
• Produce and defend both high-level and low-level design: system architecture, data models, detection logic, and threshold/tuning frameworks.
• Partner with Global Product on the on-chain roadmap, translating regulatory and customer requirements into deliverable engineering plans.
• Merging various patterns to re-use: You'll help shape that architecture and, over time, how engineering resources are shared across TM and TS.
• Work with compliance, customer success, and solutions teams on alert quality, false-positive reduction, and client tuning requests.

Requirements

What we're looking for

• 8+ years backend engineering experience, including 2+ years leading or tech-leading a team.
• Strong domain knowledge of the financial ecosystem - fintech, payments, banking or crypto - and a solid understanding of financial crime or compliance concepts.
• Genuinely hands-on: Strong data structures and algorithms fundamentals, a track record of high-performance concurrent code, and still reviewing PRs and debugging production.
• Proven design ownership at both levels - architecture decisions and detailed implementation design.
• Experience with high-throughput, low latency data systems: streaming (Kafka or similar), analytical stores (ClickHouse, Snowflake, or similar),and distributed batch processing.
• Clear written and verbal communication with non-engineering stakeholders.
• Experience with AI coding and using coding harnesses

Nice to have

• On-chain/blockchain data experience - chain indexing, wallet clustering, DeFi protocol mechanics.
• Exposure to trade surveillance or market abuse detection.
• Experience at a RegTech vendor or in a bank/exchange compliance technology function.

Benefits

Why join us?

You'll own a product line, not a component - with a team already in place, a clear regulatory driver, and a roadmap that expands into on-chain and market surveillance convergence.