About Aztec At Aztec, our goal is to add privacy to Ethereum. In the current public blockchain paradigm, users and entities unknowingly broadcast data in the public, compromising privacy and security to get trustlessness. Not only are unencrypted blockchains inherently privacy-exposing, they require significant redundancy to compute and verify the legitimacy of transactions. Implementing scalable encryption in a public blockchain paradigm requires cutting-edge math and engineering. Thankfully, our team of scientists and engineers invented Plonk, the industry-standard zkSNARK, and Noir, the universal language of zero knowledge. Now, we’re building a first of its kind Layer 2 with private smart contracts. This requires new cryptographic primitives, a zero-knowledge DSL for writing contracts, a privacy-friendly execution environment, a carefully designed set of circuits that prove the validity of the chain to L1, a decentralized block-building and proving mechanism, and a top-tier user and developer experience. And it’s now time to bring it to market. We’ve raised $125 million from industry-leading investors including a16z crypto, Paradigm, Variant, Consensys, and a_capital, and we’re growing quickly.The Role We’re looking for a DevOps Engineer with deep Linux expertise and a passion for building developer-centric tooling. You’ll work closely with our CTO and engineering teams to enhance our internal infrastructure, CI systems, and productivity pipelines. This is a hands-on, high-impact role - ideal for someone who thrives on owning the tools that engineers rely on every day. What You’ll Do

Take ownership of Aztec’s custom CI system and internal build tools. Enhance and build CI dashboards to improve observability of engineering workflows. Harden CI infrastructure using least privilege principles and robust sandboxing. Implement productivity enhancements across C++, Rust, Solidity, and TypeScript build systems. Investigate and resolve low-level bugs related to Linux processes, signals, memory, and IPC. Collaborate face-to-face during your ramp-up phase in our London office. Optionally grow into a leadership role as the internal infrastructure team expands.

💡 Explore our CI system in action: http://ci.aztec-labs.com and the code here. About You You might be a great fit if you:

Prefer scripting custom Bash over fighting YAML in legacy CI systems. Experience with cgroups, kernel namespaces, virtual memory, /proc, and tracing syscalls. Extensive experience with terraform and AWS cloud infrastructure. Know Docker intimately, from minimizing image sizes to how it leverages kernel features. Have experience maintaining complex software stacks and CI systems at scale. Are comfortable with debugging process groups, signals, and build failures at the OS layer. Take pride in building secure, reliable, and fast developer infrastructure.

What We Offer:

Flexible, remote-first culture with HQ in London. Competitive salary + equity/token options. 25 days annual leave + bank holidays. Health, dental, and retirement benefits (based on location). Quarterly offsites for team collaboration and bonding. Conference and learning budget for continual professional development.

A chance to work on truly cutting-edge zero-knowledge infrastructure with some of the best minds in the field.Aztec Labs is an equal opportunity employer and we value creativity, diversity, and intellectual curiosity. If you're passionate about leveraging your creative talents to make a real-world impact, and if you want to be part of a team that's shaping the future of digital privacy, then we would love to hear from you.

Apply Now:

Company Name: tastytrade Role: Staff Software Engineer – Web Platform Team Location: Chicago, IL - Hybrid  As a Staff Software Engineer on our web trading platform, you'll be a technical architect and influencer—owning large-scale initiatives that shape the future of our client-facing applications. You'll partner closely with product, design, infrastructure, and risk teams to drive strategic decisions, mentor across squads, and ensure our platform remains performant, resilient, and innovative.   What you'll do:  

Lead the design of end-to-end solutions for our Svelte based trading client and core Java trading logic library, balancing modularity, performance, and maintainability.   Set coding standards, tooling choices, and best practices. Evaluate emerging frameworks, languages, and patterns—owning proof-of-concepts to validate fir for tastytrade.  Perform deep profiling of front end and back-end components; identify bottlenecks and guide major refactors or platform upgrades to support millions of daily trades with sub 100ms latency.  Collaborate with Product, UX, Infrastructure, and other teams to align on roadmaps, define release strategies, and ensure compliance with regulatory and risk requirements.   Provide hands-on technical mentorship to Senior and Principal Engineers. Lead architecture forums, brown-bag sessions, and design reviews that elevate the entire engineering organization.  Champion a "shift-left" mindset; driving test automation, CI/CD pipeline enhancements, and production observability (logging, tracing, metrics) to minimize incidents and accelerate feedback loops.  

Who you are:  

Seasoned Architect: 8+ years of professional experience building and scaling complex web applications, with a track record of designing large scale, low latency systems.   Polyglot Proficiency: Mastery of modern web technologies (JavaScript/TypeScript, Svelte, HTML, CSS) plus strong backend fundamentals in Java, C++, or Ruby.   Strategic Thinker: Able to translate ambiguous business goals into clear technical roadmaps, balancing short term deliverables with long term platform vision.   Influencer & Mentor: Proven ability to drive consensus across teams, lead design discussions, and cultivate technical talent through direct coaching and code reviews.   Performance Obsessed: Deep understanding of front-end performance profiling, critical rendering path, and browser optimization techniques.   Quality Advocate: Committed to test driven development, robust CI/CD practices, and continuous improvement—always looking for ways to raise the bar.   Growth Mindset: Eager to learn new languages and frameworks, comfortable diving into unfamiliar stacks, and quick to ramp up on cutting edge technologies.  

Nice to Have  

Experience in financial technology or trading systems  Contributions to open source projects or public speaking at technical conferences  Previous work with Svelte/Svelte Kit, Tailwind CSS 

Team Perks:

Performance Bonuses Stock Purchase Options Medical/Dental/Vision Benefits Annual educational / conference stipend Sustainable workday with minimal on-call responsibilities 401k Plan 20 Paid Vacation Days (plus an additional paid vacation day the month of your birthday!) 10 Paid Sick Days Gym Membership Reimbursement Commuter Benefits Pet Insurance Wellness & Mental Health Programs Charitable Donation Matching Two Paid Volunteer Days Off Daily catered lunch when in the office Full kitchen with snacks and beverages In-building gym Shuttle to/from Metra Office located in the West Loop - Chicago's growing center of tech, great cuisine, and high-end bars

Salary Range: $200,000 - $225,000The actual salary offered will be based on the candidate's level of experience and qualifications About Us: The tasty house of brands empowers individual traders differently. tastylive, founded in 2011, is an online financial media network, tastytrade (previously known as tastyworks) is a self-directed retail brokerage firm that launched in 2017, tasty Software Solutions and tastyfx, is a registered Forex broker-dealer. In 2021, London-based IG Group acquired tastylive, Inc. (previously known as tastytrade) and assigned it to lead business in North America. tastyfx is the fastest-growing forex broker in the US over the past few years. Changing the IG US name to tastyfx marks the next chapter, in aligning with the tasty brand family and offering a more forex-focused experience. This combined team has years of experience like institutional brokers, but also a passion for disrupting the entire trading industry. Our dream is simple: we want more people to find more success with a better trading experience. That’s why we’re investing heavily in the right people, technology, and media to make that happen in the US and across the globe. Location: Our office is in the West Loop - Chicago's growing center of tech, great cuisine, and high-end bars. tastytrade | tastylive | tastyFX | tastycrypto 1330 W Fulton Market, Chicago, IL 60607 *Don't meet every single requirement? Studies have shown that women and people of color are less likely to apply to jobs unless they have every single qualification. Our team is dedicated to building a diverse, inclusive, and authentic workplace, so if you’re excited about this role but your experience doesn't align perfectly, we encourage you to apply anyway. You may be just the right candidate for this or other roles! 

Apply Now:

About Vac

Vac builds public good protocols for the decentralised web. We do applied research based on which we build protocols, libraries and publications.

The role

We are seeking an experienced Distributed Systems Evaluation Engineer to join the Vac DST team. This role focuses on rigorously assessing the performance and reliability of IFT projects at scale. You’ll be responsible for designing and executing comprehensive evaluation strategies, leveraging both large-scale lab deployments and protocol behaviour modelling scripts. Your expertise will be crucial in analysing these complex distributed systems, automating intricate test scenarios, and providing in-depth insights into system behaviours.

Working closely with cross-functional teams, you’ll troubleshoot complex issues and translate technical data into actionable recommendations. Proficiency in containerisation, cloud technologies, and distributed systems principles is essential.

This position offers the opportunity to make a significant impact on the robustness and scalability of IFT projects, contributing to the development of next-generation decentralised technologies.

Key responsibilities

• Design, implement, and maintain sophisticated tools for analysing distributed systems at scale, ensuring robust and efficient testing processes.
• Orchestrate and automate large-scale deployments to rigorously validate the functionality, performance, and scalability of complex distributed systems.
• Identify, document, reproduce, and troubleshoot intricate issues in distributed environments, collaborating closely with IFT project teams to resolve challenges.
• Develop a comprehensive understanding of IFT project protocols and components to provide insightful analyses that drive improvements and inform decision-making.
• Create and maintain scripts that model protocol behaviour, utilising these models to validate and sanity-check large-scale deployment runs.
• Work with Docker, Kubernetes, and POSIX-like systems
• You ideally will have
• Solid experience with scripting languages like Python.
• Experience with statistical analysis tools, like pandas, seaborn.
• Experience with systems programming languages like Nim, Go, Rust.
• Understanding of network behaviours (libp2p, gossipsub, p2p networks).
• Working knowledge of Docker, Kubernetes, and POSIX-like systems.
• Excellent written and conversational communication skills.
• Alignment with our core values and principles.

Bonus points

• Experience with off-the-shelf networking stacks such as libp2p.
• Experience in blockchain technology.
• Experience working for an open-source organisation.
• Hiring process
• Interview with our POps team
• Interview with team member from the Vac DST team
• Take home assignment & interview with team member from the Vac DST team
• Interview with Vac team lead

Compensation

The expected compensation range for this role is negotiable, dependent on how we assess your skills and experience throughout our interview process. We are happy to pay in any mix of fiat/crypto.

DV Labs is building the next generation of distributed validators to make Ethereum staking more resilient, decentralized, and secure.

Our software allows groups of operators—large and small—to collaboratively run a single validator while minimizing single‑point‑of‑failure risk and maximizing client diversity. We are a venture‑backed, remote‑first team that values open‑source ethos, long‑term thinking, and empirical decision‑making.

We are searching for a dedicated Data Engineer to design, build, and own the data platform that powers product decisions, validator‑performance analytics, on‑chain research, and community transparency.

Responsibilities

• Ingest & model Beacon‑chain data — blocks, attestations, sync‑committee aggregates, deposits, and slashings—into ClickHouse and MongoDB at multi‑TB scale.
• Develop scalable ETL/ELT pipelines in Apache Spark (PySpark/Scala) orchestrated via GitHub Workflows and containerized CI/CD.
• Implement columnar schemas & partition strategies to achieve sub‑second analytical queries and reduce storage footprint.
• Expose clean, version‑controlled datasets & metrics to internal stakeholders through APIs, dashboards, and notebooks.
• Collaborate with Protocol & DevOps teams to surface validator health, slash‑risk events, and protocol‑level anomalies in real time.
• Own data quality, lineage, testing, and documentation across the stack; champion best practices and continuous improvement.
• Contribute to open‑source tooling around consensus‑layer data, distributed‑validator monitoring, and Ethereum research.

Requirements

• 2+ years of professional experience in data engineering or high‑performance backend roles.
• Production expertise with ClickHouse and Apache Spark on multi‑terabyte datasets.
• Hands‑on experience operating MongoDB for semi‑structured/operational workloads.
• Proficiency in Python (pandas/PySpark) and/or Scala; solid Git and CI/CD habits (GitHub Actions/Workflows or similar).
• Deep understanding of the Ethereum consensus layer (Beacon chain architecture, validator lifecycle, slashing conditions, client diversity—Lighthouse, Prysm, Teku, etc.).
• Comfortable working in a remote, asynchronous startup environment with high ownership and autonomy.

Nice to have

• Familiarity with Ethereum execution‑layer JSON‑RPC, MEV‑Boost, and block‑building economics.
• Experience operating distributed systems on Kubernetes, Nomad, or similar orchestrators.
• Fluency in Python.
• Exposure to data‑observability stacks (dbt, Great Expectations, Dagster) and time‑series monitoring (Prometheus/Grafana).
• Prior contributions to web3 or other open‑source projects.

About the team - How we work?

• Async‑first: proposals & design docs precede meetings.
• Small, senior team: high trust & ownership.
• Open‑source by default: most code and discussions are public.

Our Values

• Synergistic
• Secure
• Innovative
• Reliable

Compensation

• Competitive salary in dollars
• Full remote company - Work from wherever you want
• Possibility to attend to relevant Conferences
• 2 Recharge weeks at the end of the year
• Equipment budget

Thanks for submitting your application! We’re excited to connect and hopefully build amazing things together. Best of luck!

Thanks for submitting your application! We’re excited to connect and hopefully build amazing things together.

Best of luck!

DV Labs is building the next generation of distributed validators to make Ethereum staking more resilient, decentralized, and secure.

Our software allows groups of operators—large and small—to collaboratively run a single validator while minimizing single‑point‑of‑failure risk and maximizing client diversity. We are a venture‑backed, remote‑first team that values open‑source ethos, long‑term thinking, and empirical decision‑making.

We’re looking for a product‑minded Full‑Stack Engineer who can take UI/UX ideas, wire them to backend services, and ship features that help operators run distributed validators with confidence.

You’ll work closely with protocol & infra engineers, pulling consensus‑layer telemetry that our analytics team already prepares, and surfacing it through APIs and dashboards that delight end users.

Responsibilities

• Build end‑to‑end features with Next.js (React/TypeScript) on the front‑end and NestJS(Typescript) on the back‑end.
• Query ClickHouse and MongoDB to consume outputs from existing analytics pipelines; transform & expose that data via REST endpoints and typed client SDKs.
• Integrate consensus‑layer insights (beacon duties, attestation stats, slashing alerts) so stakers understand their validator health.
• Interact with deployed Solidity smart contracts using viem/ethers.js/web3.js to read on‑chain state or submit transactions (e.g., validator registration, withdrawal credentials updates).
• Automate testing & deployment with GitHub Actions and serverless hosting on Vercel.
• Contribute to technical road‑mapping, architecture reviews, and RFCs in our open, async‑first culture.

Requirements

• 4+ years building production full‑stack web applications.
• Advanced TypeScript skills across React and Node.js.
• Demonstrated experience designing & consuming REST APIs.
• Ability to query and optimise ClickHouse or another analytic DB, plus familiarity with MongoDB.
• Working knowledge of the Ethereum consensus layer (Beacon Chain duties, attestations, slashing conditions).
• Proven experience interacting with deployed Solidity contracts (reading state, sending signed transactions, gas estimation, event parsing).
• CI/CD mindset; you automate workflows with GitHub Actions (or similar) and treat infrastructure as code.
• Strong testing discipline: unit, integration, and E2E where it matters.
• Excellent written communication; comfortable in an async, globally distributed team.

Nice to have

• Experience with SQL
• Exposure to GraphQL (Apollo Server/Federation) — some internal services use it.
• Contributions to Ethereum client code, staking protocols, or DV research (Lido, DVT).Experience with p2p networking stacks (libp2p, gRPC) or BFT systems.
• Familiarity with container orchestration (Kubernetes) and infrastructure‑as‑code (Terraform).
• Go proficiency (many beacon‑chain tools use them).
• Data‑visualisation skills (D3.js, Recharts) for rich dashboards.

About the team - How we work?

• Async‑first: proposals & design docs precede meetings.
• Small, senior team: high trust & ownership.
• Open‑source by default: most code and discussions are public.

Our Values

• Synergistic
• Secure
• Innovative
• Reliable

Compensation

• Competitive salary in dollars
• Full remote company - Work from wherever you want
• Possibility to attend to relevant Conferences
• 2 Recharge weeks at the end of the year
• Equipment budget

Thanks for submitting your application! We’re excited to connect and hopefully build amazing things together.

Best of luck!