Backend Engineer

• Work alongside team members to implement new technologies and systems within the GovTech sector, using Java as the main back-end technology stack
• Contribute to the design and development of secure, scalable, and efficient solutions for public-sector digital transformation
• Collaborate with your team and clients to identify the right technical approaches and deliver impactful results
• Ensure code quality, performance, and reliability across the system architecture
• Act as a trustworthy and proactive team player, communicating risks, challenges, and improvements early
• Take part in R&D initiatives, exploring innovative tools and methods to enhance existing systems
• Participate in code reviews, architecture discussions, and continuous improvement efforts
• Support and mentor junior colleagues, helping them grow technically and professionally

Senior Software Engineer, Java

• Develop and maintain backend services using Golang
• Support migration activities for a growing SaaS product
• Build scalable, reliable, and maintainable backend solutions
• Collaborate with cross-functional teams to refine and deliver technical requirements
• Contribute to a flexible delivery setup as project needs evolve
• Participate in technical discussions and interviews where needed to ensure strong team fit

Backend Engineer, Golang

• Design, develop, and maintain Java-based applications and services
• Support development of enterprise solutions related to investment services and securities processes
• Collaborate with cross-functional teams to refine and implement technical requirements
• Troubleshoot and optimize application performance while ensuring code quality
• Contribute to robust, scalable, and maintainable software systems

Java Developer

• You will be a member of an agile engineering team, working on strategic projects including helping to build API-first services that form part of a new target architecture.
• You will have the opportunity to contribute towards building and scaling customer products and services, collaborating with other Engineering and Mobile, DevOps and Data teams.
• You'll engage with cutting edge technologies and utilize CI/CD pipelines built with Terraform and Kubernetes on GCP.
• You'll navigate complex challenges and drive development process improvements, working with your team to achieve common objectives.

Scala Software Engineer

• Work on robust back-end solutions, ensuring scalability and security
• Deliver high-quality code solutions and make decisions on the architecture
• Write clean, efficient, and well-tested code while adhering to best practices
• Understand the functionalities being developed, both from business and technical perspectives
• Participate in technical decisions by providing alternatives, specific opinions, as well as reasoning behind those
• Collaborate closely with cross-functional teams to ensure alignment between business objectives and technical implementations

Back-end Developer – Mid/Senior

• Ownership of system design, implementation and support
• Write high-quality C# code on the latest .NET stack
• Run .NET on Linux in container cluster (docker)
• Use Infrastructure as a Code to manage cloud infrastructure (terraform.io)
• Design distributed (micro)service architecture which processes data in real time
• Work extensively with Amazon Web Services infrastructure (we use 30+ AWS services)
• Mentoring less experienced colleagues
• Instrument and monitor code

Senior Software Engineer, Backend, C#

• Work on payment processing integrations;
• Build and maintain our current APIs as well as create new ones;
• Focus on writing clear, tested, documented code that delivers real business value;
• Develop back-end solutions with Symfony;
• Build highly scalable systems.

Senior PHP Developer

• Write high-quality C# code on the latest .NET stack.
• Run .NET on Linux in container cluster (docker).
• Use Infrastructure as a Code to manage cloud infrastructure (terraform.io).
• Design distributed (micro) service architecture which processes data in real time.
• Work extensively with Amazon Web Services infrastructure (we use 30+ AWS services).
• Instrument and monitor code.

Software Engineer – Backend, C#

• Our team is hiring a Senior Database Engineer (Oracle PL/SQL) with skills for engineering ETL, data warehousing and reporting solutions
• This highly technical role requires a candidate who can bridge between requirements from Financial Service Authorities and banks operational IT systems
• The ideal applicant will have a proven ability to engineer complex data transformations, such as translating data from a bank's internal operational systems to the formats needed for regulatory reporting datasets

Senior Database Engineer, ETL – PL/SQL

• Own the platform end-to-end. A multi-module .NET application serving real customers. You operate it, evolve it, and help decide where it goes next.
• Build integrations that matter. Background screening, payroll, and the next provider on the roadmap. Reliable, observable, and built to handle real-world edge cases.
• Ship customer-driven features. Feedback comes in, features go out. We work in tight feedback loops with our customers and product team.
• Run an agentic workflow. Use AI agents to explore code, design systems, generate tests, and accelerate delivery.
• Help define the playbook the rest of the team will adopt.
• Own quality without a safety net. Automated tests and CI gates are how we ship with confidence. No QA team — quality is part of the engineering job.
• Lead technically. Write design docs, run design reviews, mentor teammates, and communicate clearly with both engineers and non-technical stakeholders.

Senior .NET Software Engineer

• Developing an AI product in our cloud data portfolio within Investment Advice area
• Primary focus on developing a newly introduced AI product deploying on both local and cloud platform
• Working closely with your team and having good collaboration with architects to deliver exceptional results

Full-stack Developer, React, Python – AI Solution

• Design, develop, and sustain a reliable payment solution built on Python.
• Collaborate with product managers and stakeholders to gather requirements and deliver effective solutions.
• Write clean, maintainable, and efficient code while adhering to best practices.
• Participate in code reviews to ensure code quality and adherence to standards.

Python Software Engineer

• Delivering a first-class Web applications experience
• Developing back-end services and integration modules for various business and consumer needs
• Collaborating closely with a cross-functional team (Product Owners, UX designers, QA, and developers) to build product features that drive the core business models of CityBee
• Writing high-quality, maintainable code, testing it, participating in code reviews, and shipping it
• Ensuring proper technical design and thorough documentation
• Working effectively in a dynamic, fast-paced environment where processes evolve, and creative problem-solving is encouraged.

Mid-Senior .NET Back-End Developer

• Own and evolve a complex Python/Django monolith, defining architecture decisions for scalability and performance
• Design and optimize backend systems supporting bug bounty workflows, pentest programs, and real-time messaging
• Lead integration of AI/LLM solutions into production pipelines (e.g., report triage, classification, validation)
• Build and scale asynchronous systems using Celery and real-time services via Django Channels
• Improve system security, access controls, and data validation across the platform
• Optimize PostgreSQL queries, caching strategies, and background job performance
• Enhance CI/CD pipelines, Docker-based environments, and infrastructure reliability
• Customize and extend internal tools (e.g., Django Admin) to support operational teams
• Collaborate closely with product and security stakeholders to deliver user-centric solutions
• Continuously refactor and modernize code while maintaining high test coverage and system stability.

Lead Backend Engineer, Python, Django, AI-Driven Systems

• Architect Scalability: Design and develop highly resilient back-end systems using Java, ensuring our infrastructure handles global scale with ease.
• Feature Innovation: Own the end-to-end lifecycle of new features, from initial implementation to refined bug fixing and performance tuning.
• Collaborative Engineering: Work closely with product managers, UX designers, and QA to translate complex business needs into elegant technical solutions.
• Code Excellence: Drive quality through automated testing, rigorous code reviews, and the creation of clear, maintainable technical documentation.
• Stay Ahead: Continuously research and evaluate emerging technologies and methodologies to keep Wallee at the cutting edge of the fintech industry.

Java Software Engineer – Payment Integration

• Drive the implementation of technical initiatives to improve the quality of our product
• Partner with Product to impact the roadmap and ensure engineering decisions align with user needs
• Collaborate closely within a cross-functional team as well as other engineering teams to understand business requirements and ensure the timely delivery of features
• Work closely with architects to identify and address technical challenges, ensuring the scalability, reliability, and usability of our Marketplace products
• Take ownership of engineering decisions for larger topics and features
• Be a part of a push to improve the product delivery process

Senior Software Engineer, PHP

• Investigate, test, and resolve technical problems
• Act as a member of the team, scoping requirements, carrying out peer review of code
• Work closely with the product team to understand the vision and translate it into engineering product requirements
• Support junior members of the team via tech review and mentoring
• Ensure best practices are kept

Senior Developer, PHP

• Design and develop highly resilient back-end systems using Java, ensuring our infrastructure handles global scale with ease.
• Follow best practices such as SOLID principles, design patterns, and proper error handling.
• Write and maintain unit and integration tests for new and existing code, ideally following a Test-Driven Development (TDD) approach.
• Participate in peer code reviews to ensure code quality and consistency across the codebase.
• Perform root cause analysis and implement fixes when incidents occur.
• Maintain clear documentation for systems and features.

Java Software Engineer – Terminal Integration

• Lead end-to-end software development and design robust solutions
• Collaborate with AI coding agents inside the IDE to scaffold code
• Drive solution design and technical decision making
• Evaluate, refine, and take accountability for AI-assisted outputs
• Champion a modern development mindset focusing on decision quality

See all jobs on JobTailor

Senior Software Engineer, Java

Backend Engineer, Golang

Java Developer

Scala Software Engineer

Back-end Developer – Mid/Senior

Senior Software Engineer, Backend, C#

Senior PHP Developer

Software Engineer – Backend, C#

Senior Database Engineer, ETL – PL/SQL

Senior .NET Software Engineer

Full-stack Developer, React, Python – AI Solution

Python Software Engineer

Mid-Senior .NET Back-End Developer

Lead Backend Engineer, Python, Django, AI-Driven Systems

Java Software Engineer – Payment Integration

Senior Software Engineer, PHP

Senior Developer, PHP

Java Software Engineer – Terminal Integration

Mid/Senior PHP Developer

Back-end Developer – Mid/Senior