CrawlJobs Logo

Staff Software Engineer - Coin Integration

https://www.ledger.com Logo

Ledger

Location Icon

Location:
France , Paris

Category Icon

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided

Job Description:

We’re a team of experts pushing the limits of what’s possible, united by our common goal to unlock true freedom through digital ownership, making technology accessible for all. We believe in a world where users, creators and enterprises manage their value with ownership and freedom. Our curiosity drives us to innovate, empowering individuals on a global scale. We believe change is constant and our team moves forward as one, with a culture of problem-solving where every employee is empowered and supported to challenge tradition and create solutions. Our mission is simple: to make self-custody accessible and give people the keys to their own financial futures. If you want to make a true impact, we want you to join us at Ledger. At Ledger, we’re proud to be the global platform for digital assets and Web3, with over 20% of the world’s crypto assets secured through our Ledger devices. With our headquarters in Paris, and offices in Vierzon, Grenoble, Montpellier, London, Portland, Geneva, Zurich and Central Singapore, we have a team of around 600 professionals developing a variety of products and services to enable individuals and companies to securely buy, store, swap, grow and manage crypto assets – including the Ledger hardware wallets line with more than 7.5 millions units already sold in 200 countries. The team The Blockchain Support Team plays a key role in expanding the Ledger ecosystem. The team integrates new blockchains into Ledger products—bringing secure, reliable support for an ever-growing set of protocols used by millions of Ledger users. The team works closely with the Coin Integration Team, which designs and maintains the coin framework powering all blockchain modules. While the Coin Integration Team owns the core architecture, the Blockchain Support Team applies it in practice: delivering new chain integrations, maintaining existing ones, and ensuring that each module meets Ledger’s security, quality, and reliability standards.

Job Responsibility:

  • Act as the technical lead for blockchain integrations owned by the Blockchain Support Team
  • Own the technical quality, correctness, and maintainability of delivered integrations
  • Design, implement, and maintain blockchain modules from early exploration to production
  • Contribute significantly through coding, reviews, and architectural prototypes
  • Identify architectural risks early and propose pragmatic solutions
  • Set a high bar for code quality, testing, documentation, and security practices
  • Drive the documentation of integration patterns, architectural decisions, and protocol-specific learnings
  • Mentor engineers through technical guidance, pairing, and design discussions
  • Help engineers grow their expertise in blockchain protocols, systems thinking, and Ledger’s architecture
  • Collaborate with product, security, and other engineering teams when needed

Requirements:

  • Strong experience as a senior or staff-level engineer in complex technical environments
  • Proven ability to lead technically without direct people management responsibility
  • Ability to dive into protocol-level details
  • Strong communication skills, especially around technical documentation and design rationale
  • Comfortable working with distributed or international teams

Nice to have:

  • Hands-on experience integrating blockchain protocols (EVM, Bitcoin, Cosmos, Solana, Polkadot, etc.)
  • Familiarity with SDKs, developer platforms, or modular architectures
  • Strong TypeScript / Node.js background
  • Strong interest in blockchain technology and the evolution of Web3
What we offer:
  • Flexible work options - Our hybrid policy allows employees to work from home up to 3 times per week
  • Health & Wellness support - Health and Life Insurance
  • Financial growth opportunities - Employees can become shareholders in Ledger as well as other financial benefits depending on your country of work
  • Commuter allowance - Ledger offers a commuter allowance to contribute to your preferred means of transportation
  • Learning & Development - A comprehensive suite of training solutions providing a personalised learning experience for every employee

Additional Information:

Job Posted:
January 15, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
Job Link Share:

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

Briefcase Icon

Similar Jobs for Staff Software Engineer - Coin Integration

Staff Software Engineer - Coin Integration

As a Senior Engineer on the Coin Integration Team at Ledger, you will play a key...
Location
Location
France , Paris
Salary
Salary:
Not provided
https://www.ledger.com Logo
Ledger
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Strong proficiency in JavaScript, TypeScript, Node.js, and React
  • Familiarity with agile project teams and methodologies
  • Excellent problem-solving abilities with a strategic mindset regarding blockchain integrations and product outcomes
  • Exceptional communication and interpersonal skills, capable of contributing to a collaborative and innovative team environment
Job Responsibility
Job Responsibility
  • Integrate Diverse Blockchains
  • Design and implement strategies for blockchain integration
  • Work closely with product management, software development, and quality assurance teams
  • Address complex blockchain integration challenges
  • Provide guidance and share expertise with team members
  • Apply agile best practices
  • Engage in regular agile ceremonies
  • Encourage a culture of feedback and innovation
What we offer
What we offer
  • Equity
  • Flexibility
  • Annual company outing
  • Frequent social events
  • Comprehensive health insurance policy
  • Personal development, coaching & fitness
  • Five weeks of paid leave per year
  • Access to high performance office equipment
  • Ledger reimburses part of your preferred means of transportation
  • Employee discount on all our products
  • Fulltime
Read More
Arrow Right
New

Manager, Customer Retention Strategy

This role is responsible for developing and implementing customer retention stra...
Location
Location
United States , Bellevue; Frisco
Salary
Salary:
86200.00 - 155500.00 USD / Year
https://www.t-mobile.com Logo
T-Mobile
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s degree plus 3 years of related work experience OR advanced degree with 1 year of related work experience OR combination of education and experience deemed equivalent. Acceptable areas of study include Business, Marketing, Economics, Statistics, Engineering, Computer Science, or other quantitative/technical subject areas
  • 3-5 years confirmed experience in CRM, lifecycle marketing, retention strategy, or customer base management
  • 2+ years Hands-on experience building and implementing campaigns in Braze or similar marketing automation platforms (e.g., Salesforce Marketing Cloud, Adobe Campaign, Iterable, or similar tools)
  • Consulting-style problem solving with the ability to break sophisticated, ambiguous business challenges into structured analytical workstreams and actionable retention strategies
  • Strong understanding of lifecycle marketing strategies including segmentation, triggered messaging, personalization, and customer journey orchestration across digital channels
  • Hands-on experience building and implementing campaigns within CRM platforms such as Braze, including audience segmentation, journey configuration, campaign QA, and deployment
  • Ability to interpret large customer datasets, campaign performance metrics, and lifecycle analytics to find opportunities and optimize retention programs
  • Excellent written and verbal communication skills with the ability to synthesize sophisticated analytical insights into clear recommendations for business collaborators
  • Ability to develop compelling visual narratives and presentations that communicate retention performance, strategic insights, and business impact to leadership
  • Strong organizational skills with the ability to lead multiple initiatives simultaneously and drive cross-functional collaboration to deliver retention programs
Job Responsibility
Job Responsibility
  • Analyze customer behavior, lifecycle performance, and churn drivers to identify retention opportunities and develop targeted strategies to improve renewal and customer engagement
  • Design and implement lifecycle retention programs across email, SMS, push notifications, and other owned channels within the Braze platform. This includes audience segmentation, journey orchestration, campaign configuration, and deployment
  • Develop and implement test-and-learn strategies to optimize messaging, timing, personalization, and offer structure to improve retention performance and customer lifetime value
  • Partner with cross-functional teams including Product, Marketing, BI, Data Science, and Customer Experience to align retention initiatives with broader customer lifecycle and business objectives
  • Monitor campaign and lifecycle program performance, analyze results, and translate insights into actionable recommendations that improve retention strategies and program effectiveness
  • Ensure operational excellence and accuracy in campaign deployment through strong QA practices, platform governance, and adherence to CRM guidelines within Braze
  • Prepare and present clear, data-driven narratives to leadership highlighting retention trends, program performance, and strategic recommendations
  • Also responsible for other duties/projects as assigned by business management as needed
What we offer
What we offer
  • Medical insurance
  • Dental insurance
  • Vision insurance
  • Flexible spending account
  • 401(k)
  • Employee stock grants
  • Employee stock purchase plan
  • Paid time off
  • Up to 12 paid holidays
  • Paid parental and family leave
  • Fulltime
Read More
Arrow Right
New

Storeperson/Forklift Driver

Are you an experienced Storeperson/Forklift Driver? This is an opportunity to jo...
Location
Location
Australia , Brisbane
Salary
Salary:
37.00 AUD / Hour
https://www.randstad.com Logo
Randstad
Expiration Date
May 22, 2026
Flip Icon
Requirements
Requirements
  • A current and valid LF Forklift Licence is mandatory
  • Proven, hands-on experience utilising SAP (or similar warehousing systems) for warehouse operations
  • Demonstrated experience in high-volume pick packing
  • Solid experience managing both receiving and dispatch processes
  • Strong attention to detail and commitment to safety
  • Valid Australian Work rights
  • Current LF Forklift ticket
Job Responsibility
Job Responsibility
  • Safe operation of the LF Forklift for moving, loading, and unloading goods
  • Performing efficient pick packing of stock for customer orders
  • Managing all processes related to receiving and dispatch
  • Accurate data entry and inventory management using the SAP system
  • General storeperson duties as required
  • Fulltime
Read More
Arrow Right
New

Car Delivery Driver

As a Car Delivery Driver, you’ll be the face of Domino’s in your local community...
Location
Location
United Kingdom , Lincolnshire
Salary
Salary:
10.85 - 12.71 GBP / Hour
jobs.360resourcing.co.uk Logo
360 Resourcing Solutions
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Full, valid UK or International driving licence
  • Own a reliable, roadworthy car with valid MOT, tax, and insurance
  • Smartphone for delivery app use
  • Good knowledge of the local area
  • Friendly, reliable, and able to work independently
  • Able to work flexible hours, including evenings and weekends
Job Responsibility
Job Responsibility
  • Deliver pizzas and menu items to customers promptly and safely
  • Provide excellent customer service at every doorstep
  • Operate your vehicle in accordance with road safety regulations
  • Use the Domino’s Delivery App on your smartphone to manage orders
  • Support the in-store team during quieter delivery periods (e.g. cleaning, restocking, folding boxes)
  • Represent Domino’s positively in the community
What we offer
What we offer
  • Competitive hourly pay + per-delivery payment + tips
  • 28 days paid holiday per year (includes BH, pro rata for part time)
  • Flexible working hours to suit your lifestyle
  • Staff discount on our delicious food
  • Occasional Business Use insurance provided whilst out driving
  • Staff meals (conditions apply)
  • Company pension scheme (where eligible)
  • Family Leave policies in place
  • Paid training and clear career progression pathway with linked pay increases
  • Supportive, inclusive, and fun team environment
Read More
Arrow Right
New

Accounting Clerk

We are looking for a detail-oriented PART TIME Accounting Clerk to support daily...
Location
Location
United States , Eliot
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Experience supporting accounts payable functions in an accounting or finance environment
  • Strong data entry skills with a high level of accuracy and attention to detail
  • Background in invoice processing and handling routine financial documentation
  • Ability to reconcile accounts and work comfortably with spreadsheets for tracking and reporting purposes
  • Familiarity with daily cash application, payment posting, or related cash handling responsibilities
  • Strong organizational skills and the ability to handle confidential financial information professionally
Job Responsibility
Job Responsibility
  • Process vendor invoices and support accounts payable activities by reviewing documentation, entering data accurately, and helping ensure timely payments
  • Apply daily cash receipts, record cash activity, and complete regular cash balancing tasks to keep financial records current
  • Prepare and print checks as needed while following established procedures for payment processing and documentation
  • Perform account reconciliations and maintain spreadsheets that track financial activity, outstanding items, and supporting details
  • Use banking and scanning equipment to organize deposit-related documents and assist with daily cash-out procedures
  • Enter and update vendor and financial information in accounting records to support accurate reporting and operational continuity
  • Assist with finance-related administrative work connected to payroll, tax, utilities, motor vehicle transactions, and other routine departmental needs
  • Provide support for finance system-related updates and related record setup as accounting functions continue to be rolled out
  • Help manage day-to-day accounting priorities by maintaining organized files, verifying transaction details, and responding to routine processing needs
What we offer
What we offer
  • medical
  • vision
  • dental
  • life and disability insurance
  • 401(k) plan
  • Parttime
Read More
Arrow Right
New

Pharmacy Intern

You’ve invested a lot of time and energy in your education. Now you want the cha...
Location
Location
United States , Fuquay Varina
Salary
Salary:
18.00 - 19.75 USD / Hour
https://www.cvshealth.com/ Logo
CVS Health
Expiration Date
July 30, 2026
Flip Icon
Requirements
Requirements
  • Accepted into or actively enrolled in an ACPE accredited college or school of pharmacy
  • 0-3 years relevant work experience
  • Must possess or be in process of obtaining valid intern and/or technician licensure as required
  • Strong communication and presentation skills
  • Complete all required training within state guidelines and required timeframe
  • Have regular and predictable attendance, including nights and weekends
  • Be mobile and remain upright for extended periods of time
  • Lift, scan, and bag items
  • Finger Dexterity: Picking, pinching, typing or otherwise working primarily with fingers rather than whole hand or arm
  • Reach overhead
Job Responsibility
Job Responsibility
  • Keeping customers and patients healthy through adoption and management of patient care programs
  • Lead with Heart – display empathy and compassion for patients, customers, caregivers, and colleagues
  • Seek new ways to grow, collaborate with others, and deliver better outcomes
  • Align others around our purpose to bring your heart to every moment of your health and gain support and commitment
  • Facilitate a team culture that promotes caring, energy, enthusiasm, and pride
Read More
Arrow Right
New

Accounts Payable Officer

Location
Location
Australia , Brisbane
Salary
Salary:
Not provided
https://www.randstad.com Logo
Randstad
Expiration Date
May 22, 2026
Flip Icon
Requirements
Requirements
  • Proven experience in a dedicated Accounts Payable role
  • Experience with MYOB is essential
  • High level of attention to detail and data entry accuracy
  • Immediate availability
  • Full and unlimited Australian working rights
  • 2 years of experience
Job Responsibility
Job Responsibility
  • Processing high-volume supplier invoices accurately
  • Reconciling vendor statements and resolving discrepancies
  • Ensuring timely payment runs and maintaining the ledger
  • Responding to internal and external accounts queries
  • General administrative support to the finance function
What we offer
What we offer
  • 4-week temporary assignment with the potential for extension
  • Immediate start available
  • Murarrie location with free parking
  • Supportive and great team environment
  • Opportunity to work with a growing, national brand
  • Fulltime
Read More
Arrow Right
New

Home Health Salaried Or Per Point Occupational Therapist Full Time

We are looking for an Occupational Therapist (OT) to join our team! You will uti...
Location
Location
United States , Viroqua
Salary
Salary:
85000.00 - 105000.00 USD / Year
aveanna.com Logo
Aveanna Healthcare
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Degree in Occupational Therapy from an accredited university/program
  • Current, unrestricted state license as an Occupational Therapist in the state of practice
  • Valid CPR
Job Responsibility
Job Responsibility
  • Perform initial and ongoing assessments to evaluate mobility, coordination, strength and current level of function
  • Responsible for administration, evaluation, and interpretation of tests and measurements to determine functional goals and outcomes
  • Provide a written evaluation and plan of care defining occupational therapy needs, goals, progress and expected outcomes
  • Delivery of occupational therapy services to comply with prescribed physician orders
  • Maintains plan of care by performing timely documentation of client performance, modifying goals and treatment as needed, and determine discharge care plans as appropriate
  • Responsible for discharge planning, including collaborating and educating the patient and his/her caretakers on home exercise plan to follow discharge
  • Participates in coordination of services with health care team, physicians, parent/guardians, nurses, etc.
  • Documents according to policy and procedure and requires minimal supervision or instruction
  • Documents effectively resulting in no technical or clinical denials subsequent to review of documentation by payers
  • Maintain effective communication between staff, healthcare team members and family
What we offer
What we offer
  • $15,000 Sign on Bonus
  • Thorough training
  • Flexible schedules
  • Electronic charting
  • Access to a clinical supervisor 24/7
  • Tuition Reimbursement
  • Advancement opportunities
  • Weekly pay via multiple payment options
  • Fulltime
Read More
Arrow Right