Smart Contract Engineer Job at Childhood Cancer Society

Sr. Protocol Engineer, Product

We’re looking for an experienced protocol engineer to join our Trade team, build...

Location

United States

Salary:

200000.00 - 300000.00 USD / Year

Zora

Expiration Date

Until further notice

Requirements

4+ years of experience shipping production-level contracts or protocol features
Experience with DeFi protocols
Deep understanding of EVM
Familiarity with Git, Foundry, Hardhat and modern solidity toolchains
Experience with formal/invariant thinking, MEV considerations, upgrade safety, and incident response
Comfort moving across the stack when needed (TypeScript / React / Next / Python)
High degree of ownership and autonomy
Strong communication and collaboration skills, across both technical and non-technical teams

Job Responsibility

Contribute to the Zora protocol by designing and implementing smart contracts
Handle maintenance, security review, and full protocol lifecycle
Write adversarial tests (fuzzing, invariant/property-based testing) and maintain a security-first mindset in development and review
Partner with auditors and respond to findings
drive fixes through deployment
Participate in RFC and code review process with a security and reusability mindset
Collaborate across engineering teams to integrate smart contracts across the stack
Communicate status, updates, blockers, etc., to cross-functional stakeholders

What we offer

Remote-First Culture: Work from anywhere in the world!
Competitive Compensation: Including salary, pre-IPO stock options, token compensation, and additional financial incentives
Comprehensive Benefits: Robust healthcare options, including fully covered medical, dental, and vision for employees
Retirement Contributions: Up to 4% employer match on your 401(k) contributions
Health & Wellness: Free memberships to One Medical, Teladoc, and Health Advocate
Unlimited Time Off: Flexible vacation policies, company holidays, and recharge weeks to prioritize wellness
Home Office Reimbursement: To cover home office items, monthly home internet, and monthly cell phone (if applicable)
Ease of Life Reimbursement: To cover everything from an Uber home in the rain, childcare, or meal delivery
Career Development: Access to mentorship, training, and opportunities to grow your career
Inclusive Environment: A culture dedicated to diversity, equity, inclusion, and belonging

Fulltime

Rail Systems Coordinator

At EKFB we’re shaping Infrastructure for a better tomorrow. We're looking for a ...

Location

United Kingdom , Milton Keynes

Salary:

Not provided

EKFB

Expiration Date

Until further notice

Requirements

Degree or equivalent experience in Engineering, Project Management or a related field
Experience in design coordination/management
Experience in infrastructure or civil engineering projects, ideally in a major project environment
Familiarity with Rail Systems and NTSN Disciplines
Understanding of NEC contract mechanism (Early Warnings, Technical queries etc.)
Strong stakeholder management and communication skills
Ability to produce high-quality documentation and technical records
Proficient in Microsoft Office and project collaboration tools (e.g. SharePoint, Smart Connect)
Experience with assurance processes and document control

Job Responsibility

Lead stakeholder interfaces for Rail Systems and National Technical Specification Notices (NTSN) including chairing key meetings such as integration and design reviews
Produce comprehensive meeting minutes capturing decisions and agreements in contractual and technical terms
Maintain and manage action trackers and issue logs, ensuring timely resolution and evidence-based closeout
Collaborate effectively with the client team while advocating for best-for-project outcomes
Liaise with design, construction, and assurance teams to address Rail Systems and NTSN concerns
Draft and manage technical queries and contractual communications, with a working knowledge of early warnings, general communications, and change events
Support the Rail Systems Discipline Lead in production and maintenance of interface management plans, ensuring assurance processes are followed and client comments are resolved
Review short-notice construction changes, assess Rail Systems and NTSN impacts, and coordinate resolutions with stakeholders
Oversee the development of interface control documents during design stage close out, ensuring client buy-in and tracking items for construction-stage development
Coordinate and support approval body reviews for NTSN

What we offer

competitive salary & benefits

Fulltime

Lead Blockchain Engineer

We’re looking for a Blockchain Development Lead to join our Engineering team and...

Location

India , Noida

Salary:

Not provided

Taazaa Inc

Expiration Date

Until further notice

Requirements

5+ years of software development experience
2+ years in blockchain or distributed systems
Strong experience with Solidity, Rust, or Go for blockchain protocols or smart contract development
Hands-on experience with Ethereum, Hyperledger, Polygon, or Solana ecosystems
Deep understanding of cryptographic primitives, consensus algorithms, and decentralized architectures
Familiarity with web3 libraries, Node.js/TypeScript, and REST/gRPC API integration
Proven experience in leading teams, conducting code reviews, and mentoring developers

Job Responsibility

Architecture & Design: Lead the design of scalable, secure, and efficient blockchain systems (permissioned and public)
Technical Leadership: Mentor and guide developers on smart contracts, distributed ledger design, and cryptographic principles
Integration: Collaborate with backend, cloud, and data engineering teams to integrate blockchain components with existing SaaS architectures
Innovation: Evaluate emerging technologies (L2s, ZK proofs, stablecoins, cross-chain protocols) for use in real-world business applications
Quality & Security: Establish best practices for code reviews, audits, and on-chain security
Collaboration: Partner with cross-functional teams including Product Managers, Designers, and Data Scientists to prototype and deploy blockchain-powered features

What we offer

Continuous professional growth, offering workshops and training
Work-life balance with flexible hours and remote options
Competitive salaries
Health benefits
Various perks

Fulltime

Senior Software Engineer (Blockchain)

Are you ready to shape the future of digital finance? We’re partnering with a pi...

Location

United Kingdom

Salary:

120000.00 GBP / Year

Formula Recruitment

Expiration Date

Until further notice

Requirements

Senior level experience in fullstack and blockchain engineering
Deep expertise in Solidity, TypeScript, and EVM-based smart contract development
Strong understanding of DeFi primitives, stablecoin mechanics, and treasury operations
Experience with distributed systems, microservices, and modern CI/CD pipelines
Familiarity with compliance-aware systems (KYC, AML) and security best practices
Proficiency in React or Next.js for front-end development

Job Responsibility

Architect and implement smart contracts for core financial operations
Build backend services and APIs that ensure secure, real-time transaction flows
Develop responsive, user-friendly front-end interfaces for seamless experiences
Design and integrate yield-generating protocols and treasury management tools
Collaborate with cross-functional teams to ensure compliance, scalability, and security
Drive engineering excellence through best practices, testing, and mentorship

What we offer

Bonus
Fully remote working environment
Work on transformative technology redefining digital money
Join a well-funded organisation with resources to innovate at scale
Collaborate with a world-class team in a high-impact role
Competitive compensation and benefits package

Fulltime

Smart Grids and Energy Management (Senior) Research Engineer

The successful candidate will be responsible for researching and developing adva...

Location

Germany , Aachen

Salary:

Not provided

Toshiba EMEA

Expiration Date

January 31, 2026

Requirements

Extensive technical knowledge and hands-on skillset of the field in the Target Technology
Ability to seize R&D opportunities in line with technology challenges and business objectives
Proactive analytic problem-solving skills
PhD (or near completion) in electrical/electronic engineering, systems engineering or related discipline
Excellent team player with experience of working in collaborative projects
Strong communication skills in English

Job Responsibility

Conducting industry-applied R&D such as innovative research and advanced development in the field of the target technology
Networking with business and R&D divisions in Toshiba Corporation, business partners, and academia partners, etc.
Proposing projects relevant to the target technology to EU or local external funding, then joining to deliver field trials as proof of concept, through engaging with academia and industry experts
Technology scouting and industry trend analysis leveraging our European presence, and providing strategic feedback to Toshiba’s R&D and business operations based on these insights
Business concept validation activities in collaboration with business divisions and business development teams
Producing intellectual property and high-quality journal and conference papers
Investigating relevant standardization activities for advanced technology features
Demonstrating the ability to work with other engineers not only in EMEA but globally and showing a broad understanding of the work across the global organisation
Supporting RIC’s deliverables under internal company contract and in external collaborative projects etc.

What we offer

The opportunity to attain a group leader/senior manager position depending on the candidate’s ability and experience
Opportunities to grow, take initiatives and work within a dynamic and multi-cultural organisation.
An attractive remuneration package (incl. several benefits) commensurate with qualifications and experience

Senior Blockchain Engineer

Groma is blending real estate and technology to unlock a new real estate asset c...

Location

United States , Boston

Salary:

Not provided

Groma (MA)

Expiration Date

Until further notice

Requirements

Senior-level role
Hands-on experience building, deploying, and maintaining smart contracts in a production environment on EVM networks (Ethereum and Base)
Experience working with a variety of token standards
Willing and able to contribute across the entire technology stack
Comfortable building web applications in Django or a comparable framework
Startup interest
Product mindset
Technical breadth
Desire to move fast

Job Responsibility

Build the digital infrastructure and products that power the company
Work on tools to manage the real estate portfolio efficiently
Work on products that enable investors to initiate and manage their investments
Work on infrastructure to express property assets, investor share holdings, and REIT operations on Ethereum and other networks

What we offer

Competitive salary for the Boston area
Early stage equity
5% 401k match
100% employer-paid premiums for high-quality health, dental, and vision insurance plans
Fully covered commuter passes for bus, subway, boat, or commuter rail
Unlimited PTO
13 official company holidays
1 floating holiday
Beautiful office in downtown Boston with a gym, locker rooms, game room, rooftop garden, and at least one catered lunch and breakfast per week

Fulltime

Lead Instrumentation Engineer

We are a leading provider of IT, engineering and consulting services. We are loo...

Location

Poland , Krakow

Salary:

Not provided

Astek

Expiration Date

Until further notice

Requirements

Master’s degree in Automation or a related technical field
Prior experience as an Instrumentation Engineer in a plant engineering company
Proficient in AutoCAD and Smart Plant 3D
Capable of working independently on domestic and international projects
Skilled in MS Office applications
Possess strong interpersonal and communication skills
Willing to travel occasionally for short-term assignments
Eager to work in a multicultural team

Job Responsibility

Lead a team of in-house and third-party instrumentation engineers, ensuring smooth project execution
Develop project-specific basis of design in line with specifications and contract requirements
Analyze and evaluate technical contract annexes
Plan, manage, monitor, review, and approve the discipline’s work while meeting quality, schedule, budget, and contract requirements
Prepare full instrumentation documentation, including Instrument Lists, Data Sheets, wiring diagrams, loop drawings, cable lists, layout inputs, hook-ups, and material take-off
Prepare RFQs/TRS and perform technical bid evaluations
Coordinate package units and interfaces with other disciplines, clients, and vendors
Participate in inspections of instruments and valves, and verify project documentation for completeness and compliance with standards

What we offer

Long-term collaboration
Technical training, certifications, and skills development
Competence Center mentoring
Clear career path
Employee benefits package (Multisport, private healthcare, life insurance, subsidized city card)
Friendly working atmosphere, team-building events, and team-building meetings

Sr. Full-Stack Engineer, Product

We’re looking for an experienced product-focused full-stack engineer to join our...

Location

United States

Salary:

175000.00 - 215000.00 USD / Year

Zora

Expiration Date

Until further notice

Requirements

4+ years of experience as a software engineer working on user-facing or product-centric systems
Strong experience building both front-end applications at scale (React, React Native, Next.js, TypeScript) and back-end systems & APIs (Node/TypeScript, GraphQL, or similar)
Ability to move fluidly across the stack: Front-end (React/React Native), Back-end (TypeScript/Node, GraphQL, Python), Smart contracts or on-chain logic (Solidity) — or a willingness to learn
A strong product sense and a user-first mindset
Comfort owning features from ideation through implementation and production support
Familiarity with or desire to learn crypto/web3 concepts
Desire to stay current with modern software best practices across full-stack development
MUST be located in a US Time Zone

Job Responsibility

Build and continuously improve trading-related features across web, mobile, backend services, and on-chain components
Design, build, and maintain APIs, services, and user interfaces that support high-scale trading and creation experiences
Own projects end-to-end—from system design to implementation, testing, rollout, and post-launch iteration
Work closely with PMs and Designers to shape product direction and ensure user needs are kept at the center
Participate in code reviews, RFCs, technical design discussions, and architecture planning
Collaborate with engineers across the stack, contributing wherever the product needs you most
Participate in on-call rotation and help maintain reliability of core trading surfaces
Communicate clearly with cross-functional stakeholders on status, risks, and milestones

What we offer

Remote-First Culture: Work from anywhere in the world!
Competitive Compensation: Including salary, pre-IPO stock options, token compensation, and additional financial incentives
Comprehensive Benefits: Robust healthcare options, including fully covered medical, dental, and vision for employees
Retirement Contributions: Up to 4% employer match on your 401(k) contributions
Health & Wellness: Free memberships to One Medical, Teladoc, and Health Advocate
Unlimited Time Off: Flexible vacation policies, company holidays, and recharge weeks to prioritize wellness
Home Office Reimbursement: To cover home office items, monthly home internet, and monthly cell phone (if applicable)
Ease of Life Reimbursement: To cover everything from an Uber home in the rain, childcare, or meal delivery
Career Development: Access to mentorship, training, and opportunities to grow your career
Inclusive Environment: A culture dedicated to diversity, equity, inclusion, and belonging

Fulltime

Smart Contract Engineer

Childhood Cancer Society

Location:

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 07, 2025

Looking for more opportunities? Search for other job offers that match your skills and interests.

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Smart Contract Engineer

Childhood Cancer Society

Location:

Category:IT - Software Development

Contract Type:Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:December 07, 2025

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