Who we are  We simplify wealth creation. Founded in 2014 in Vienna, Austria by Eric Demuth, Paul Klanschek and Christian Trummer, we’re here to help people trust themselves enough to build their financial freedom — for now and the future. Our user-friendly, trade-everything platform empowers both first-time investors and seasoned experts to invest in the cryptocurrencies, crypto indices, stocks, precious metals and commodities they want — with any sized budget, 24/7. Our global team works across different cultures and time zones, bringing our products to more than 6 million customers, making us one of Europe’s safest and most secure platforms that powers modern investing.   Headquartered in Austria but operating across Europe, our products are built by fast-moving, talented, “roll-up-your-sleeves-and-make-it-happen” kind of people. It’s these diverse perspectives and innovative minds operating as ONE TEAM that keep Bitpanda at the cutting edge of our industry. So if you’re someone who thinks big, moves fast and wants to make an impact right from day one, then get ready to join our industry-changing team. Let’s go!  Your Mission Join Bitpanda’s Crypto Hub, the engine behind our Web3 vision. We're building scalable, secure, and user-focused decentralized infrastructure to support tokenized assets, smart contracts, and next-gen dApps. This is your opportunity to help shape the future of open finance across Europe and beyond. What You’ll Do

Build and scale backend systems that power Bitpanda’s Web3 stack, from tokenized assets to dApps and beyond. Design, develop, and deploy secure smart contracts on Ethereum and EVM-compatible chains. Deliver production-grade Python (or Go/TypeScript) code focused on performance, maintainability, and scalability. Collaborate with product and security teams to ship features rapidly and responsibly. Own key architectural decisions and drive the technical direction of our decentralized systems.

Who You Are

5+ years of backend experience with Python with strong system architecture skills. Hands-on experience writing and deploying Solidity smart contracts in production environments. Familiar with key Web3 tooling and concepts (Hardhat, Foundry, L2s, DeFi, RPC nodes, on-chain indexing). Deep understanding of integrating blockchain services, APIs, and event-driven systems. Passionate about decentralization, self-custody, and building real-world Web3 solutions. What’s in it for you

Hybrid-working model with 25-Work From Anywhere days* Competitive total compensation package including participation in our stock option plan Market-leading benefits programs shaped  by our Time & Flexibility policies* Company-wide and team events — both in-person and virtually! Bitpanda swag to keep you living the brand

  And, above all, the opportunity to learn and grow as part of Bitpanda’s incredible journey towards being Europe’s future #1 investment platform. Bitpanda is committed to fostering a fair and equal environment based on trust and mutual respect. We believe that a diverse and inclusive workplace is paramount to our success and we are committed to building a team that represents a wide variety of backgrounds, perspectives, and skills.   * These benefits may be adjusted at Bitpanda’s discretion and do not apply to our internships and exceptions to our Hybrid Working policy apply to teams with shift schedules or for folks whose roles require them to be in-office (think: Workplaces team or IT).

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About SSV Labs SSV Labs is the core team behind the SSV Network - pioneering decentralized infrastructure for Ethereum staking. We’re building tools, protocols, and standards to make staking more secure, scalable, and trustless. Our flagship upgrade, SSV 2.0, brings that vision to life. It’s a fully modular, next-gen staking layer that enables anyone to run validators with decentralized, non-custodial node operators. With built-in MEV support, advanced slashing protection, and performance at scale, SSV 2.0 is the foundation for Ethereum’s future.   Why join our team?   We are a global team that are looking for people with diverse professional backgrounds to join and contribute their ideas and help in the company's success. You'll get to work in a transparent environment with the most innovative technologies, be constantly challenged and learn from like-minded professionals and leaders in the industry. We offer a platform for you to develop and achieve your career goals. We look forward to hearing from passionate, goal-oriented applicants ready to make their mark in the blockchain space.   If you're a Solidity Developer looking to make an impact at a fast-growing crypto startup, this is the position for you!  You will play a pivotal role in defining the next generation of secure, scalable blockchain infrastructure. Your innovations will directly impact a global network of validators and the integrity of Layer‑2 ecosystems. You will be a crucial member of a small team that is building the future of decentralized staking.   Responsibilities:

Design and develop secure and robust smart contracts following security and efficiency best practices. Research and study existing and upcoming protocols and applications of leading players in the Ethereum Staking ecosystem to evaluate and design means of integrations. Define and execute comprehensive test suites—unit tests, integration tests, fuzz testing, property‑based tests, and scenario simulations. Work as a key member of the contracts team to architect, specify, and implement your research findings. Continuously evaluate and improve the security, scalability, and efficiency of our contracts. Collaborate with product managers, designers, frontenders, and other developers. Report progress in a transparent, accountable manner; escalate risks and failures promptly; share learnings and documentation. Work at a rapid pace with substantial ownership and autonomy.

  Your Experience & Qualifications:

Deep conceptual and technological understanding of Ethereum At least 3 years of experience in Solidity development At least 5 years of development experience Experience with at least one other programming language (Go/ Python/ JavaScript) and Ethereum development framework (Hardhat/ Foundry) Deep familiarity with Optimistic Rollups: challenge periods, fraud‑proof design, sequencing. Deep familiarity with ZK‑Rollups (e.g. zkSync, StarkNet, Polygon zkEVM): validity proof systems, prover/ verifier pipelines, circuit design. Familiarity with trust‑minimized cross‑chain protocols. "Can-do" mentality and team player qualities Experience with picking up existing open-source solutions and working with them - Advantage Strong knowledge of common algorithms and data structures, specifically within the Solidity scope where gas optimization is important Previous experience integrating systems/apps in Ethereum, such as bridges, connecting dApps, or contracts Familiarity with cryptography - Advantage BSc degree in Computer Science or relevant field or equivalent - Advantage Any knowledge of Blockchain/ Digital Currencies / Staking - Advantage *We offer equal opportunities and ensure an inclusive recruitment for our global teams without consideration of race, gender, culture, or sexual orientation.

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Who are we?

We believe Ethereum has the potential to solve some of humanity’s most crucial coordination issues. Since our initial inception as a research group, we have sought to scale both its technology and values.

At present, the most pressing bottleneck to the growth of Ethereum is its performance and scalability. We are building the most elegant solution to this problem. We do this in the open (under an MIT open source license) because we believe in open source innovation and its ability to accelerate growth.

OP Labs contributes to the Optimism protocol, an extension to Ethereum that scales both its technology and values. Optimism enables orders of magnitude of improved performance and scalability to Ethereum while doubling down on its commitment to public goods.

The Optimism Collective leads the blockchain protocol landscape, dedicated to fostering a scalable and sustainable ecosystem. Optimism’s ethos, in sync with Ethereum's vision, tackles pivotal coordination challenges of the digital age. Optimism’s goal is to harmonize private incentives with public good, shaping a resilient future for the Internet. Optimism’s scope spans diverse areas like Gaming, DeFi, NFTs, and Enterprise.

Position Overview:

We’re looking for a tech lead to develop the platform to support the full lifecycle of protocol feature development. This encompasses all protocol developer tooling and frameworks to enable protocol engineers to ship capabilities quickly and confidently on stable foundations.

This is a critical and high-impact role responsible for driving the roadmap and delivery of capabilities that accelerate protocol feature development for both OP Labs engineering teams and the broader Collective.

What are the role responsibilities?

• Architect and implement tools, frameworks, SDKs and APIs to increase protocol development velocity and create an industry-leading protocol developer experience

• Drive the execution of the protocol developer experience roadmap in close partnership with Engineering Management, Product and Engineering stakeholders

• Act as a force multiplier for the team - drive the technical vision and architecture for protocol developer tooling and mentor other engineers

• Be highly customer-centric, partnering closely with other engineering teams and stakeholders to understand protocol developer needs and rapidly deliver impactful solutions

What skills do you bring?

• Hands-on experience with Golang, Ethereum developer tooling ecosystem (e.g., Kurtosis, Hardhat, Foundry), operational experience with Kubernetes (e.g., IaC such as Terraform) and public cloud infrastructure (e.g., GCP, AWS)

• Track-record of working collaboratively with developers to create impactful developer tools that meaningfully improve developer velocity - demonstrates strong developer empathy

• Prior experience working in the Web3 space with exposure to protocol development, either directly or in a supporting capacity

• Exhibits high agency, high ownership and pragmatism - this is someone who likes to and is capable of getting stuff done and drives impactful results

• Able to effectively balance between strategic and execution-focused contributions in a dynamic and fast-paced environment

What will you like about us?

• We take care of our employees. Competitive compensation, fully paid medical, dental, and vision, and a 4% 401K match—learn more about our benefits, culture, and all recruiting FAQ here.

• We take pride in the accomplishments of our teammates and support each other in doing the best work of our careers.

• Our team is a diverse group of people from varied backgrounds. We cherish our eclecticism and consider it a great strength.

• We’re fully remote, deeply engaged, highly skilled, and like to have fun.

• We think long-term. Our founders have been scaling Ethereum since 2015.

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