\nAircall is a place where voices are valued.\n\n\nBacked by over $220 million of investment since 2015, we create technology that fuels accessible, transparent and collaborative communication to empower our base of 20,000+ customers (and growing) to make authentic, human connections.\n\n\nConversation is a cornerstone of our culture. Wherever our people find themselves in the Aircall world – Paris, New York, San Francisco, Sydney, Madrid, London, Berlin, Seattle, Mexico City or at home – everyone has a voice that is valued.\n\n\nWhatever your background, wherever you’re from – we want you to join the conversation. Let’s talk.\n\n\nWe are looking for an engaged and passionateSenior Software Engineer to join our growing Communication Platform department and be part of the Number Management team. \n\n\nYou will be responsible for the design, development, deployment, and operation of business-critical features that add customer value.\n\n\nBest practices, evangelization, and mentoring in your team and across the whole of Engineering will be part of your day to day job.\n\n\nQuality, excellence, and agility drive our delivery processes and you will help us level these up. \n\n\nUsing Typescript and Ruby back-end stacks, appropriate for each requirement, but always hosted on AWS, we build added value and resilient services on top of voice and Al capabilities, and fully integrated with our customers' business critical tools.\n\n\n\nKey Responsibilities:\n* Participate in requirements analysis to help with providing the right technical and business solutions for our customers\n* Have key responsibilities within the design, architecture, and end-to-end delivery of key modules\n* Write clean scalable code and test and deploy applications and systems\n* Review, update, refactor, and debug code\n* Be part of an engineering organization delivering high quality, secure, voice solutions to Aircall clients\n* Involvement in product and platform performance optimization and live site monitoring\n* Participate in an on-call rotation to respond to critical system issues and ensure continuous system reliability\n* Mentor team members\n\n\n\n\nTeam Environment:\n* Join a small, collaborative team with a mindset that values autonomy and proactivity while ensuring you are never alone.\n* The team is spread between France, Spain, India and Portugal, promoting a diverse and inclusive work culture.\n* Sharing and collaboration are key within the team, encouraging open communication and teamwork to achieve the best outcomes.\n\n\n\nRequirements:\n* You have at least 5+ years of experience in backend development with preferably a typed language (Typescript/Node.js, Java, C#) with a focus on delivering for scalability, availability, security and performance\n* You have at least 2+ years of experience working on frontend applications, preferably with React, but experience with Angular is also valued.\n* You have experience with serverless architectures, microservices or distributed systems.\n* You have worked extensively with AWS in a production environment and understand how to design for, deploy on and get the best out of, the environment and services provided by Amazon\n* You can talk easily and spontaneously about most of the offerings on AWS, when to use them, and how, and can explain to junior engineers\n* Security is at the forefront of your mind in everything that you do\n\n\n\n\n\n\nAircall is constantly moving forward. We’re building new roads to complete our journey, and we’re taking people with us who have the same builder mentality.\n\n\nLet’s grow together: Aircall is a place for those who dare to be bold and seek responsibility, excellence, and the opportunity to push themselves to new heights.\n\n\nWe’re creating a place where great people trust one another and thrive together.\n\n\nPeople flourish at Aircall and now is the time to be part of the team and the journey we’re on.\n\n\nWhy join us?\n\n\n🚀 Key moment to join Aircall in terms of growth and opportunities\n💆‍♀️ Our people matter, work-life balance is important at Aircall\n📚 Fast-learning environment, entrepreneurial and strong team spirit\n🌍 45+ Nationalities: cosmopolite & multi-cultural mindset\n💶 Competitive salary package & benefits\n\n\nDE&I Statement: \nAt Aircall, we believe diversity, equity and inclusion – irrespective of origins, identity, background and orientations – are core to our journey. \n\n\nWe pride ourselves on promoting active inclusion within our business to foster a strong sense of belonging for all. We’re working to create a place filled with diverse people who can enrich and learn from one another. We’re committed to ensuring that everyone not only has a seat at the table but is valued and respected at it by providing equal opportunities to develop and thrive.  \n\n\nWe will constantly challenge ourselves to make sure that we live up to our ambitions around diversity, equity and inclusion, and keep this conversation open. Above all else, we understand and acknowledge that we have work to do and much to learn.\n\n\nWant to know more about candidate privacy? Find our Candidate Privacy Notice here. \n\n#Salary and compensation\n No salary data published by company so we estimated salary based on similar jobs related to Design, Angular, Senior, Junior, Engineer and Backend jobs that are similar:\n\n $67,500 — $95,000/year\n
\n\n#Benefits\n 💰 401(k)\n\n🌎 Distributed team\n\n⏰ Async\n\n🤓 Vision insurance\n\n🦷 Dental insurance\n\n🚑 Medical insurance\n\n🏖 Unlimited vacation\n\n🏖 Paid time off\n\n📆 4 day workweek\n\n💰 401k matching\n\n🏔 Company retreats\n\n🏬 Coworking budget\n\n📚 Learning budget\n\n💪 Free gym membership\n\n🧘 Mental wellness budget\n\n🖥 Home office budget\n\n🥧 Pay in crypto\n\n🥸 Pseudonymous\n\n💰 Profit sharing\n\n💰 Equity compensation\n\n⬜️ No whiteboard interview\n\n👀 No monitoring system\n\n🚫 No politics at work\n\n🎅 We hire old (and young)\n\n

\nAt HackerRank, we help over 2,500 of the most prestigious logos across industries find, hire and upskill amazing developer talent using our SaaS-based Developer Skills Platform. We pioneered and continue to lead the developer skills market. At HackerRank, we are passionate about our mission to "Change the world to value skills over pedigree. This position is Full-Time and Remote within India.\nYou will be working on:\n\n\n* As a backend engineer, you will be expected to execute and deliver large and complex projects end-to-end, with or without the involvement of other team members.\n\n* Ensuring timely delivery of all product deliverables.\n\n* Play a key role in technical discussions within the team and be the go-to person for the team for guidance and troubleshooting.\n\n* Understand key Business and Engineering metrics around performance, quality, and availability and regularly work with the team to push the boundaries and improve them periodically.\n\n* Proactively participate in code reviews and architecture and design discussions\n\n* Mentoring junior engineers and setting best practices for coding, code reviews, etc.\n\n* Help the organization build a top-quality team by participating in hiring initiatives and evangelizing about contributions, accomplishments, and victories.\n\n\n\nWe are looking for:\n\n\n* Strong and self-motivated individuals, should be able to drive decisions independently.\n\n* Solid experience in building web-based products.\n\n* Overall of 2+ years of expertise in at least one dynamic programming language and one MVC web framework, preferably Ruby on Rails.\n\n* Expertise in Database modeling, preferably relational DB, spotting DB bottlenecks, and writing optimized DB queries.\n\n* Expertise in all standard Cloud technologies, preferably AWS. Knowledge of CI/CD tools and workflows.\n\n* Proven track record in building highly-available and scalable distributed systems.\n\n* Willingness to play and explore new technologies, be a Subject Matter Expert, and support them.\n\n* Someone who believes in minor incremental improvements and is passionate about refactoring.\n\n* A keen eye for quality about following and establishing good coding practices and improving code coverage.\n\n* Good stakeholder management and ability to build trust and rapport with internal and external stakeholders.\n\n\n\nNice to have:\n\n\n* Experience in at least one Frontend framework, preferably React.js\n\n* It is good to have Knowledge of Kubernetes and Docker and related deployment technologies\n\n* Web application security best practices and knowledge of common application security  vulnerabilities XSS, SQL injection, etc\n\n\n\nBenefits & Perks:\n\nWe have a full package of competitive benefits and perks, which include:\n\n\nOne-time home office set up stipend\n\nMonthly Remote Work Enablement Stipend\n\nProfessional Development Reimbursement\n\nWellbeing Benefits (Headspace, etc)\n\nFlexible paid time off, paid leave for new parents, and flexible work hours\n\nInsurance for all employees (term life, personal accident, medical) along with medical insurance for their dependents\n\nEmployee stock options\n\n\n\nAbout HackerRank:\n\nHackerRank is a Y Combinator alumnus backed by tier-one Silicon Valley VCs with total funding of over $100 million. The HackerRank Developer Skills Platform is the standard for assessing developer skills for 2,500+ companies across industries and 23M+ developers worldwide. Companies like LinkedIn, Stripe, and Peloton rely on HackerRank to objectively evaluate skills against millions of developers at every hiring process, allowing teams to hire the best and reduce engineering time. Developers rely on HackerRank to turn their skills into great jobs. We’re data-driven givers who take full ownership of our work and love delighting our customers!\n\nHackerRank is a proud equal employment opportunity and affirmative action employer. We provide equal opportunity to everyone for employment based on individual performance and qualification. We never discriminate based on race, religion, national origin, gender identity or expression, sexual orientation, age, marital, veteran, or disability status. All your information will be kept confidential according to EEO guidelines.\n\nNotice to prospective HackerRank job applicants:\nWe’ve noticed fake accounts posing as HackerRank Recruiters on Linkedin and through text. These imposters trick you into paying them for jobs/providing credit check information.\nHere’s how to spot the real deal:\n\n\n* Our Recruiters use @hackerrank.com email addresses.\n\n* We never ask for payment or credit check information to apply, interview, or work here. \n\n\n\n\nThanks for your interest in HackerRank! \n\n#Salary and compensation\n No salary data published by company so we estimated salary based on similar jobs related to Design, Docker, Cloud, Ruby, Junior, Engineer and Backend jobs that are similar:\n\n $60,000 — $100,000/year\n
\n\n#Benefits\n 💰 401(k)\n\n🌎 Distributed team\n\n⏰ Async\n\n🤓 Vision insurance\n\n🦷 Dental insurance\n\n🚑 Medical insurance\n\n🏖 Unlimited vacation\n\n🏖 Paid time off\n\n📆 4 day workweek\n\n💰 401k matching\n\n🏔 Company retreats\n\n🏬 Coworking budget\n\n📚 Learning budget\n\n💪 Free gym membership\n\n🧘 Mental wellness budget\n\n🖥 Home office budget\n\n🥧 Pay in crypto\n\n🥸 Pseudonymous\n\n💰 Profit sharing\n\n💰 Equity compensation\n\n⬜️ No whiteboard interview\n\n👀 No monitoring system\n\n🚫 No politics at work\n\n🎅 We hire old (and young)\n\n

\nWho Are We?\n\n\nObol Labs is a remote-first research and software development team focused on Proof of Stake infrastructure for public blockchain networks. Specific topics of focus are Internet Bonds, Distributed Validator Technology, and Multi-Operator Validation. The core team includes 35 members spread across +14 countries.\n\n\nThe core team is building the Obol Network, a protocol to foster trust-minimized staking through multi-operator validation. This will enable low-trust access to Ethereum staking yield, which can be used as a core building block in various Web3 products.\n\n\nThe Network\n\n\nThe network can be best visualized as a work layer that sits directly on top of the base layer consensus. This work layer is designed to provide the base layer with more resiliency and decentralization as it scales. In this chapter of Ethereum, we will move on to the next great scaling challenge, which is stake centralization. Layers like Obol are critical to the long-term viability and resiliency of public networks, especially networks like Ethereum.\n\n\nObol as a layer is focused on scaling main chain staking by providing permissionless access to Distributed Validators. The network utilizes a middleware implementation of Distributed Validator Technology (DVT), to enable the operation of distributed validator clusters that can preserve validators' current client and remote signing configurations.\n\n\nSimilar to how roll-up technology laid the foundation for L2 scaling implementations, we believe DVT will do the same for scaling the consensus layer while preserving decentralization. Staking infrastructure is entering its protocol phase of evolution, which must include trust-minimized staking networks that can be plugged into at scale. We believe DVT will evolve into a widely used primitive and will ensure the security, resiliency, and decentralization of public networks.\n\n\nThe Obol Network develops and maintains three core public goods that will eventually work together through circular economics:\n\n\nThe DV Launchpad, a User Interface for bootstrapping and managing Distributed Validators\n\n\nCharon, a Golang based middleware client that enables validators to run in a fault-tolerant, distributed manner.\n\n\nObol Splits, a set of solidity contracts for the formation of Distributed Validators tailored to different use cases such as DeFi, Liquid Staking, and Fractionalized Deposits \n\n\n\n\nSustainable Public Goods\n\n\nObol is inspired by previous work on Ethereum public goods and experimenting with circular economics. We believe that to unlock innovation in staking use cases, a credibly neutral layer must exist for innovation to flow and evolve vertically. Without this layer, highly available uptime will continue to be a moat.\n\n\nThe Obol Network will become an open, community-governed, self-sustaining project over the coming months and years. Together we will incentivize, build, and maintain distributed validator technology that makes public networks a more secure and resilient foundation to build on top of.\n\n\nThe Role \n\n\nThe focus of this role is on developing and enhancing React-based web applications for interacting with the Ethereum blockchain to create Distributed Validators. This includes creating user-friendly interfaces, integrating with wallets, and ensuring the applications are absolutely secure and reliable.\n\n\nThe goal of this role is to enable the proliferation of Distributed Validators in the Ethereum Staking Ecosystem, by making them easy to create, view, understand, and interact with. This role requires working with agency and autonomy. It requires collaboration with cross-functional internal teams as well as dealing with external stakeholders. Obol’s Distributed Validator Launchpad, Obol’s static website, Obol’s typescript packages, and other applications will be under this role’s remit. \n\n\n\nResponsibilities\n* Develop and implement new features for our web applications using React, showcasing your expertise in creating user-centric solutions.\n* Collaborate with cross-functional teams, including product owners, designers, and QA engineers, to ensure seamless delivery of high-quality products.\n* Contribute to Obol’s coding standards, design patterns, and development methodologies.\n* Drive innovation by researching and adopting the latest trends and technologies in the React ecosystem, ensuring our applications remain secure, competitive, and cutting-edge.\n* Act as a technical mentor for junior developers, providing guidance and support to help them grow and excel in their roles.\n* Collaborate with external partners integrating Obol technology into their dapps using the Obol SDK.\n* Take responsibility for maintaining and enhancing our current products, including our component library (obol-ui) and DApp (dv-launchpad).\n* Improve the accessibility of our interfaces to all types of internet users.\n* Harden the security of our React software and its supply chain.  \n\n\n\nRequirements\n* Professional experience in React-based Ethereum Application Development (examples below).\n* What we use for React Development: Typescript, Next.js, React Hook Form, SWR, Zustand, @headlessui/react, stitches.dev, tailwindCSS and others. \n* What we use for Ethereum Development: Foundry, Hardhat, Ethers.js, web3-react, @obolnetwork/obol-sdk, @metamask/eth-sig-util, @0xsplits/splits-sdk(-react), @gnosis.pm/safe-core-sdk, @synthetixio/synpress, @chainsafe/(bls/discv5/ssz) and others. \n* Previous delivery of react websites that enable non-custodial, wallet-based interaction with mainnet Ethereum or a similar EVM network with more than $100k in value handled. \n* Knowledge of JS/TS security and testing best practices.\n* Knowledge of JS/TS CI/CD best practices.\n* Experience working with Agile Software Development methodologies.\n* Web3 professional experience.\n* Proven ability to maintain and contribute to Open Source repos \n* Timezone between UTC-2 to UTC+3 \n\n\n\nNice to have\n* Ethereum staking experience.\n* Node.js or other backend development experience.\n* Solidity development experience.\n* Familiarity with docker and/or running servers.\n* SQL/NoSQL experience.\n* Experience working in a distributed remote team.\n\n\n\nBenefits\n* Fully Remote Working and flexible hours.\n* Meet the team at our Annual Offsites.\n* Chance to attend crypto and staking conferences.\n* Working with the purpose of decentralising Ethereum.\n* Generous paid time off.\n* Budget for equipment.\n* Budget for training or education.\n\n\n\n\n\nThank you for your interest. Looking forward to building amazing stuff together! \n\n#Salary and compensation\n No salary data published by company so we estimated salary based on similar jobs related to Design, Web3, Solidity, Crypto, Ethereum, React, Docker, Testing, Typescript, Senior, Golang, Engineer and Backend jobs that are similar:\n\n $70,000 — $110,000/year\n
\n\n#Benefits\n 💰 401(k)\n\n🌎 Distributed team\n\n⏰ Async\n\n🤓 Vision insurance\n\n🦷 Dental insurance\n\n🚑 Medical insurance\n\n🏖 Unlimited vacation\n\n🏖 Paid time off\n\n📆 4 day workweek\n\n💰 401k matching\n\n🏔 Company retreats\n\n🏬 Coworking budget\n\n📚 Learning budget\n\n💪 Free gym membership\n\n🧘 Mental wellness budget\n\n🖥 Home office budget\n\n🥧 Pay in crypto\n\n🥸 Pseudonymous\n\n💰 Profit sharing\n\n💰 Equity compensation\n\n⬜️ No whiteboard interview\n\n👀 No monitoring system\n\n🚫 No politics at work\n\n🎅 We hire old (and young)\n\n
\n\n#Location\nLisbon, Portugal