C++ Senior Software Engineer
TechJobs.ie Job Insights
At a glance
- Employment type
- Full-time
- Workplace
- Remote
- Category
- Full-stack
What you'll be doing
Join a fast-scaling global fintech as a Senior C++ Software Engineer. Lead greenfield backend initiatives, architect core infrastructure, and own key system components. Work remotely from Ireland, driving impactful solutions for financial inclusion and scalable payment infrastructure.
- Architect core infrastructure
- Deliver greenfield features
- End-to-end ownership of key system components
Key requirements
Must-have
- 6+ years professional experience delivering production C++ systems
- Background in multi-threaded programming and concurrency controls
- Experience with system architecture
- Proficiency in REST API design and microservices communication
- Expertise with relational databases and SQL query optimization
Experience: 6+ years
Role signals
- Technical focus
- backend
- Architecture / system design
- Indicated in the listing
- Hands-on vs management
- Hands-on
Similar jobs
Full job description
Senior C++ Software Engineer
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**Purpose-Driven Greenfield Build **
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**Global Impact **
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Accelerated Growth
A fast-scaling global fintech organization is actively recruiting a Senior Software Engineer to join a lean, high-performing backend team. The company focuses on financial inclusion, developing scalable payment infrastructure designed to bring essential financial services and cross-border payments to underbanked communities worldwide.
This position combines high-impact social purpose with complex, low-level software engineering. You will lead greenfield initiatives, take end-to-end technical ownership of key system components, and resolve intricate concurrency challenges. Given the agile structure of the engineering team, your code will directly influence platform direction, offering exceptional visibility and rapid career growth as operations expand into new international regions.
This is an ideal environment for a seasoned C++ developer seeking full remote independence, significant technical ownership, and work that drives real global change.
Key Responsibilities
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Architect Core Infrastructure
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Deliver Greenfield Features
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End-to-End Ownership
Candidate Profile
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6+ years of professional software engineering experience delivering production C++ systems.
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Proven background in multi-threaded programming, concurrency controls, and system architecture.
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Strong proficiency in REST API design and microservices communication.
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Practical expertise with relational databases and SQL query optimization.
Compensation & Benefits
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€70,000-€80,000
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Full corporate benefits package.
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Fully remote
For additional details or to arrange a confidential conversation, contact Samuel Knox at +353 1 960 9973 or submit your CV directly to .
Interview prep pack
Grounded in this listing. Use it to prepare examples before you apply.
Your interview focus
Based on this listing, the role is for a Senior C++ Software Engineer to architect and deliver greenfield backend infrastructure for a global fintech focused on scalable, high-impact payment systems. The position emphasizes technical ownership, advanced concurrency, and system architecture in a remote, agile environment.
- C++ Production Experience·Medium
- Concurrency and Multi-threading·Medium
- System Architecture·High
- REST API and SQL·High
Only have 30 minutes?
Follow a focused preparation plan based on this job.
Start 30-minute prep
Your 30-minute plan
Review and Summarize Key C++ Projects
0–8 minSelect 1-2 major C++ projects that best demonstrate your experience with production systems, concurrency, and technical ownership. Prepare concise summaries and outcomes.
Refresh Concurrency and Multi-threading Concepts
8–15 minStudy advanced concurrency patterns, synchronization mechanisms, and debugging techniques relevant to C++.
Prepare REST API and SQL Optimization Examples
15–21 minIdentify specific instances where you designed REST APIs or optimized SQL queries, focusing on challenges and measurable results.
Draft Questions for the Interviewer
21–25 minSelect and tailor 3-4 questions from the provided list to ask during your interview.
Practice Communicating Technical Decisions
25–30 minRehearse explaining your architectural choices and problem-solving approaches clearly and concisely, especially for remote settings.
Talking points
, 5 itemsProduction-Grade C++ Systems
Demonstrate your experience building, deploying, and maintaining robust C++ applications in real-world environments.
Concurrency and Multi-threading
Showcase your ability to design and debug multi-threaded systems, addressing race conditions and performance bottlenecks.
System Architecture and Technical Ownership
Prepare examples where you led the design or overhaul of core infrastructure, especially in greenfield or high-growth contexts.
REST API Design and Microservices
Highlight your experience designing APIs and integrating backend services, focusing on scalability and maintainability.
SQL Query Optimization
Be ready to discuss optimizing relational database queries for performance and reliability in production systems.
What to research
, 4 itemsRecent C++ Projects
Review your most relevant C++ projects, focusing on those involving production systems, concurrency, and technical ownership.
Concurrency Patterns and Debugging
Refresh your knowledge of multi-threading, synchronization primitives, and debugging tools for concurrency issues in C++.
REST API and Microservices Design
Prepare to discuss your experience designing and implementing REST APIs and integrating microservices in backend systems.
SQL Query Optimization Techniques
Review strategies for analyzing and optimizing SQL queries, including indexing, query planning, and profiling.
Questions to ask
, 6 itemsWhat are the main technical challenges currently facing the backend team?
Why ask this? To understand where your expertise can have the most immediate impact.
How is technical ownership distributed within the team, especially for greenfield projects?
Why ask this? To clarify expectations around autonomy and leadership.
What is the typical process for designing and deploying new system components?
Why ask this? To gauge the maturity of engineering processes and your potential influence.
How does the company support knowledge sharing and collaboration in a fully remote environment?
Why ask this? To assess the tools and culture for remote teamwork.
What are the key metrics for success in this role during the first six months?
Why ask this? To align your efforts with the company's immediate priorities.
How does the team approach balancing rapid delivery with long-term maintainability?
Why ask this? To understand the company's philosophy on technical debt and code quality.
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