Backend Developer

2 semanas atrás

Lisboa, Lisboa, Portugal Https:Www.Festentech Tempo inteiro
We are hiring Backend Developer - (Blockchain focus ) for our client located in Lisbon, Portugal.

Position:
Backend Developer - (Blockchain focus)

Location:
Lisbon, Portugal

Work model:
Hybrid

Employment type:
Permanent

We seek a highly experienced and talented Full Stack Developer (Backend / Blockchain Focus) to join our team and lead our business development efforts.

Currently, we are focusing our search on professionals based in Lisbon, Portugal.

We offer an opportunity to join a well-funded project early in its lifecycle and apply your skills and knowledge to become a major driving force behind its success.

While this is not a requirement, as we cater to the sophisticated traders' community, we will prioritize professionals with experience in building trading technology.


Your Responsibilities:
Protocol Design & Smart Contract Development Design, develop, test, and deploy smart contracts on EVM Blockchains (Arbitrum, Ethereum, Optimism, Base, Polygon, others)
Ensure all smart contracts are optimised, gas-efficient, and adhere to the highest security standards, incorporating the latest technologies and standards as they evolve
Liaise with external audit firms for periodic reviews

Backend/Frontend Development & Security:
Develop, maintain, and optimize backend services related to the protocol
Ensure data consistency, fault tolerance, scalability
Develop APIs for front-end consumption and third-party integrations
Conduct thorough code reviews, vulnerability assessments, and penetration tests
Stay updated with the latest security threats and ensure our protocol remains resilient against attacks.
Contribute to frontend development and support integrations of web3 frontends with backend and smart contracts

Collaboration & Leadership:
Collaborate with the product and research teams to design novel DeFi products and services
Work closely with other engineers, researchers, designers, and stakeholders to ensure smooth development.
Mentor junior developers and foster a collaborative and innovative development environment
Provide clear documentation and training materials for the team

Requirements Qualifications:
Bachelor's or Master's degree in Computer Science or a related field
Strong experience in backend development (JavaScript/TypeScript/Node, JVM, Go, GraphQL) and infrastructure
Proven experience in developing smart contracts on Ethereum or other major blockchain networks, proficiency in Solidity and a deep understanding of the Ethereum Virtual Machine (EVM)
Experience with frontend development , , etc)
Familiarity with centralized and decentralized oracles, layer 2 solutions, and cross-chain technologies
Passion for blockchain, decentralization, and financial innovation combined with a knowledge of DeFi platforms, token standards, and existing DeFi products
Strong attention to detail, especially in the areas of security and scalability
Excellent communication skills, both verbal and written

Nice to Have:
Contributions to a major DeFi project in trading, lending, and derivatives spaces
Technical curiosity, experience with other blockchain platforms and technologies
Other contributions to open-source blockchain projects

  • Backend Developer

    Há 6 dias

    Lisboa, Lisboa, Portugal Precise Tempo inteiro

    We are looking for a Backend Developer to join our client's team. Our client is a financial services software provider with offices in Lisbon. ResponsibilitiesAs a Backend Developer, you will be responsible for designing and implementing software and corresponding services, collaborating with your team to define, design and develop new features. You will...

  • Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Career Renew Tempo inteiro

    Career Renew is recruiting for one of its clients a Backend Developer with a focus on Crypto. Candidates must be open to occasional travel to Lisbon.We are a decentralized finance (DeFi) project preparing to introduce an on-chain derivatives trading venue (DEX). Our goal is to integrate the most significant asset class in traditional Finance into the...

  • Senior Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Talka Tempo inteiro

    We are looking for a talented, experienced and highly-motivated backend developer to build and maintain services at Talka, joining our engineering team in one of our Lisbon, Toronto or Silicon Valley offices. Engineers at Talka are expected to get things done, while exercising a great degree of critical thinking, creativeness and innovativeness in their...

  • Senior Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Sweatcoin Tempo inteiro

    Senior Backend Developer (Ruby on Rails) Lisboa Senior Backend Developer (Ruby on Rails)Lisboa Lisbon, Lisbon, Portugal Sweatcoin is a London-based and- funded- up with a team of 100 and the mission to make the world more physically active. Our iOS and Android apps have more than 100MM installs, 15M+ active users, more than 300 commercial partners and...

  • Senior Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Tn Portugal Tempo inteiro

    Senior Backend Developer (Ruby On Rails) Lisboa Senior Backend Developer (Ruby On Rails)Lisboa Lisboa, Lisboa, Portugal col-wideJob Description:Sweatcoin is a London-based and- funded- up with a team of 100 and the mission to make the world more physically active. Our iOS and Android apps have more than 100MM installs, 15M+ active users, more than 300...

  • Backend Web Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Network Locum Tempo inteiro

    Job Title:Backend Web Developer (remote working) Location: Wherever you are, Portugal Network Locum is a Brick Lane based startup, using the web to create an online marketplace that brings together GP practices and locum doctors looking for work. We've been featured in the Guardian, Sunday Times and City AM. We've been seeing incredible growth month-on-month...

  • Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal YDigital Media SA Tempo inteiro

    In case you've been living under a rock, YDigital is a 360o Agency present in Europe (Lisbon (HQ), Madrid and Paris), Africa (Cape Town and Johannesburg) and Latin America (São Paulo, Bogota and Mexico City). We're looking for a Backend Developer.We are looking for developers with a minimum 1 year of experience, to be part of our development team, with the...

  • Junior Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Talka Tempo inteiro

    We are looking for a talented and highly-motivated backend developer to build and maintain services at Talka, joining our engineering team in one of our Lisbon, Toronto or Silicon Valley offices.Engineers at Talka are expected to get things done, while exercising a great degree of critical thinking, creativeness and innovativeness in their solutions to our...

  • Junior Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Talka Tempo inteiro

    We are looking for a talented and highly-motivated backend developer to build and maintain services at Talka, joining our engineering team in one of our Lisbon, Toronto or Silicon Valley offices.Engineers at Talka are expected to get things done, while exercising a great degree of critical thinking, creativeness and innovativeness in their solutions to our...

  • Mid-Level Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Sosafe Awareness Tempo inteiro

    Mid-level Backend Node.Js Developer (m/f/d) Ready for a challenge? We need a Mid-Level Backend Developer with Node.Js experience to help us grow in our fast-paced scale-up environment You'll contribute to our backend systems and help design and implement innovative solutions. If you're passionate about cutting-edge technology and want to be part of a...

  • Backend Web Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Network Locum Tempo inteiro

    Job Title:Backend Web Developer (remote working)Location: Wherever you are, Portugal Network Locum is a Brick Lane based startup, using the web to create an online marketplace that brings together GP practices and locum doctors looking for work. We've been featured in the Guardian, Sunday Times and City AM. We've been seeing incredible growth month-on-month...

  • Senior Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Talka Tempo inteiro

    We are looking for a talented, experienced and highly-motivated backend developer to build and maintain services at Talka, joining our engineering team in one of our Lisbon, Toronto or Silicon Valley offices.Engineers at Talka are expected to get things done, while exercising a great degree of critical thinking, creativeness and innovativeness in their...

  • Senior Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Talka Tempo inteiro

    We are looking for a talented, experienced and highly-motivated backend developer to build and maintain services at Talka, joining our engineering team in one of our Lisbon, Toronto or Silicon Valley offices.Engineers at Talka are expected to get things done, while exercising a great degree of critical thinking, creativeness and innovativeness in their...

  • Senior Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Habit Analytics, Inc. Tempo inteiro

    Habit combines technology with people and insurance. Our platform enables our affinity partners to distribute embedded insurance products in context and with the highest conversion rates. We are looking for an experienced Senior Backend Developer to play a pivotal role in implementing business logic rules for our partnerships.Responsibilities:Develop backend...

  • Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Grabjobs Portugal Tempo inteiro

    Remofirst empowers employers to be free from geographical boundaries when accessing talent, allowing employees to pursue opportunities wherever they may exist. We are on a mission to be the FIRST to truly revolutionise the industry and be a generational company. Our platform offers a full-range people management tool, employee benefits like health...

  • Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Deco Proteste Tempo inteiro

    Senior Backend Developer at Digital Services Platform / Online Services Team About the company Gathering five national consumer organizations and giving voice to a total of more than 1.5 million people, Euroconsumers is the world's leading consumer cluster in innovative information, personalized services, and defense of consumer's rights. We work closely...

  • Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal HuntsBot Tempo inteiro

    Backend Developer (.NET)at SmartcatRemoteSmartcat was founded in 2016 to help global enterprises create and manage their multilingual content. Today, Smartcat is the essential language AI platform for the global enterprise.Our client-tailored language AI turns content in any format into any language, from documents to videos to complex websites and software,...

  • Backend Developer Ai Focus

    2 semanas atrás

    Lisboa, Lisboa, Portugal 10Folders Tempo inteiro

    Job Title:Backend Developer with AI Focus Location:100% Remote Duration:Minimum 5 months commitment Hours:Full-time (160 hours/month) Rate:€40-€60 per hour Languages Required: Spanish and English (minimum B2 level) About the Role: Hey there We're looking for a tech-savvy Backend Developer who's not just into coding but also digs AI like it's no big deal....

  • Php Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Fyld Pt Tempo inteiro

    Ready to Take the Field?Fyld is a Portuguese consulting company specializing in IT services. We bring high-performance professionals into the field across a wide range of technological areas.Inspired by sports management philosophy, we strive to achieve peak performance with each of our consultants. We focus on training and excellence.Join us for the next...

  • Backend Developer

    2 semanas atrás

    Lisboa, Lisboa, Portugal Ydigital Media Sa Tempo inteiro

    In case you've been living under a rock, YDigital is a 360o Agency present in Europe (Lisbon (HQ), Madrid and Paris), Africa (Cape Town and Johannesburg) and Latin America (São Paulo, Bogota and Mexico City).We're looking for a Backend Developer.We are looking for developers with a minimum 1 year of experience, to be part of our development team, with the...