Matador.ai | Senior Data Engineer | Canada/US (Remote) | Full-time

We're rebuilding our real-time analytics pipeline from the ground up and looking for a senior data engineer to architect and own the implementation. Technical challenge: Computing metrics from complex event sequences across long-lived entities (spanning days/weeks). Currently running MongoDB → Kafka → ClickHouse but hitting some limitations with the current setup.

You'd be designing a stateful stream processing architecture to handle: - Event succession patterns and sequence analysis

- Out-of-order and late-arriving data

- Retroactive updates and backfilling

- Metric versioning and controlled rollout

- Reliability and accuracy guarantees

Looking for someone who's built production stream processing pipelines and dealt with similar challenges at scale. You'll be working closely with our CTO and Director of Engineering with full ownership of technical decisions and setting up the foundation as we build out our data team.

To apply, email me: ayoub@matador.ai

Founding Engineer (Warsaw, full-time, in-office) Elastics is building an AI-native operating system for trading - deterministic agents, live data, portfolio management and execution across prediction markets, crypto, and beyond. We are Pre-Seed funded, working with our first clients, and need a Founding Engineer to accelerate building core product infrastructure. Responsibilities: Build and own our agent orchestration & runtime engine (async, distributed systems) Deploy and scale services on Azure (Docker, CI/CD, monitoring) Connect to exchanges and data sources (API/websocket integration, streaming) Implement portfolio and risk calculations (PnL, positions, Greeks, risk metrics) Implement market discovery dashboards on our platform Requirements: 5+ years of backend experience (Python, distributed systems, financial data pipelines) Comfort with Docker, Redis/Kafka, PostgreSQL Strong C++ experience Interest in financial markets and trading Startup mindset: you can ship, own, and iterate fast Warsaw-based (in-office) or willing to relocate Fluency in English - our work and clients are international Bachelor's or Master's degree in Computer Science, Mathematics, or a related field Offer: $5,000/month starting salary (B2B) + meaningful equity (true founding role) Work at the forefront of financial and AI innovation Work directly with experienced math, quant and product founders Exposure to top global hedge funds, exchanges and VCs

Send your resume to contact@elastics.ai with HN who’s hiring in the title

Feldera (https://feldera.com | REMOTE (US) | Full-Time

RELIABILITY AND PERFORMANCE ENGINEER: https://jobs.ashbyhq.com/feldera/709c14e4-1fa9-46b4-9ff8-078...

  - Strong background in systems engineering, performance testing, or site reliability engineering.
  - Fluency in Python and Linux fundamentals. Rust experience is a plus.
  - Experience with distributed systems and database concepts (consistency, fault tolerance, transactions).
  - Experience with CI/CD/Infrastructure as Code: GitHub Actions, Docker, Kubernetes.
  - Hands-on experience running large-scale and long-running workloads, preferably in a cloud-native environment.
  - Curiosity, rigor, and the ability to design experiments that simulate messy real-world conditions.

  - 5+ years experience in solution architect, customer engineering or solution engineering roles.
  - Strong background in distributed systems, databases, cloud infrastructure, and modern data platforms.
  - Experience with data-intensive systems in production (e.g., Kafka, Delta Lake, Iceberg, Kubernetes, monitoring/observability stacks).
  - Exceptional debugging and problem-solving skills, especially in customer-facing contexts.
  - Excellent communication skills, both for customer-facing and internal interactions.
  - Ability to write and maintain high-quality technical docs and playbooks.

Feel free to email with your resume gz @ domain, put HN in subject.

Moov | Multiple Roles | Fully Remote

Moov powers infinite payment use cases with full data transparency. However you decide to orchestrate the motion of money: pay by bank, pay by card, disburse to a Moov wallet or linked bank account with same-day ACH or RTP®, or spend with an issued card—we’ve got you covered.

"Moov has become an integral part of our strategy at Jack Henry. Their platform’s developer-first approach allows us to innovate quickly and stay ahead of industry demands. Moov’s world-class engineering and design team has deep experience navigating complex payment infrastructure, which helps us win because we’re able to focus on building exceptional customer experiences." – Ben Metz, CTO, Jack Henry

Our technology stack includes: Go, PostgreSQL, AlloyDB, Spanner, Kubernetes, Docker, GCP, OpenTelemetry, Kafka, and more.

Open Roles:

- Senior Software Engineer ($165k–$185k)

- Senior Software Engineer – Front End ($145k–$160k)

- Director of Risk Operations ($175k–$190k)

- Account Manager (Base $120k–$140k, Commission $60k, OTE $180k–$200k)

- Enterprise Account Executive (Base $155k–$175k, Commission $150k, OTE $305k–$325k)

Don't see your preferred role? Email careers@moov.io with your resume.

Apply: https://moov.io/careers/#open-roles

Website: https://moov.io/

Rectangle | Chicago (US), or US remote in SF and NY | Full-Time | Salary + Equity

We're looking to hire a dedicated full-stack engineer at Rectangle.

If you are (or know!) someone who has thought deeply about distributed coordination, have strong opinions on conflict resolution, or get excited about building systems that are resilient to crazy amounts of chaos, I'd love to talk to you!

Over the last few months we’ve been investing heavily in building our internal infrastructure to power automation, integration, and visibility across the supply chain. We’re rapidly onboarding new customers and are looking for an engineer who’s excited to build alongside them.

You’ll be working directly with customers, solving real-world problems, and scaling the solutions you build. The products you own end-to-end will coordinate billions of dollars of freight, and unlock real revenue and efficiency for leading tech-enabled logistics companies.

This is a great opportunity for someone who loves to operate 0 → 1 while also being directly involved in shaping our platform strategy as we keep stacking investments we’ve made into our infra layer.

Stack: Typescript, Go, Kafka, SQL, AWS

Email hn [@] rectanglehq.com or or submit a POST request to challenge.rectanglehq.com and see what happens :)

https://rectanglehq.com