Senior Backend / Platform Engineer Job at Randstad (London)

Senior Backend & Platform Engineer

We're hiring a Senior Backend & Platform Engineer to join the CSI squad and stre...

Location

France , Bordeaux

Salary:

Not provided

PhantomBuster

Expiration Date

Until further notice

Requirements

7+ years of experience in backend or infrastructure engineering
strong in TypeScript/Node.js (Koa)
comfortable with PostgreSQL, Redis, RabbitMQ/AMQP and distributed multi-service deploys
solid AWS experience (or equivalent cloud)
Docker
IaC (Ansible, Pulumi)
CI/CD pipelines
familiar with observability practices (logging, metrics, tracing)
comfortable enough with React to ship features end-to-end with AI assistance
bonus: exposure to LLM/agentic AI (AWS Bedrock AgentCore, LangChain/LangGraph) or browser automation/scraping at scale

Job Responsibility

Own end-to-end delivery of Platform projects
tackle scalability and sharding work
maintain and evolve our API and its MCP compatibility layer
improve reliability, observability, and performance of our systems
contribute to infrastructure (AWS, Docker, IaC, CI/CD)
prevent bugs and technical debt through rigorous code reviews
improve internal tooling, deployment workflows, and developer experience
write tests
drive monitoring and observability improvements
participate in weekly Support Duty rotation

What we offer

International team
Fun team building events
€40/month for remote work
Flexible working time
Home office budget up to €1500
100% of an Alan Blue subscription (french-based contracts)
Lunch vouchers - €8 (50% The Phantom Company) / worked day (french-based contracts)
Partnership with MokaCare
€70 a month benefit for entertainment expenses
Book Allowance and Sharing Program

Senior Backend Engineer – Platform (Go)

You will join an established engineering team responsible for enabling and accel...

Location

Serbia , Belgrade

Salary:

Not provided

Easygo Gaming

Expiration Date

Until further notice

Requirements

Bachelor's/Master's degree in Computer Science or equivalent practical experience
7+ years of hands-on experience in software engineering, focusing on scalable system design and development
Strong experience with Go, and familiarity with building and operating distributed systems, APIs, and shared services
Proven track record of designing and modernising systems with a focus on scalability, maintainability, and system optimisation
Experience contributing to technical direction through collaboration, design input, and mentorship when appropriate
Strong communication skills with the ability to explain technical concepts to a broad audience and work effectively with cross-functional teams
Strong problem-solving skills and the ability to thrive in a fast-paced, dynamic environment
Experience debugging production applications and managing incidents

Job Responsibility

Architect and implement high-performance software solutions in alignment with project requirements and company standards
Design and build shared services and platform capabilities, ensuring high standards of code quality, scalability, and maintainability
Optimise existing services for performance, scalability, and reliability, identifying and resolving bottlenecks, reducing technical debt, and improving system resilience
Take ownership of services throughout their lifecycle while ensuring high code quality, security, and maintainability
Collaborate effectively with cross-functional teams and operational stakeholders, clearly communicating technical concepts, trade-offs, and progress
Work across different problem domains and projects over time, adapting to changing priorities and contributing to improvements of varying complexity based on business needs
Actively contribute as a team player, supporting others when needed, asking questions, and participating constructively in technical discussions and decision-making
Provide technical leadership through solution design, code reviews, and knowledge sharing, supporting the team's overall technical quality and consistency
Communicate effectively in written and spoken English, presenting ideas clearly to colleagues and stakeholders across teams

What we offer

Performance Reward: Annual bonus linked to individual and company performance
Professional Growth: Opportunities for development, learning, and career progression within a global organization
Health & Wellbeing: Private health insurance for you and your dependants
Office Perks: Daily catered lunch, snacks and beverages, parking reimbursement, and a modern Belgrade office
Global Exposure: Opportunities to collaborate with—and occasionally visit—our Melbourne headquarters
Team Culture: Regular team-building activities and a professional, collaborative working environment

Senior Backend Engineer – Platform (Go)

You will join an established engineering team responsible for enabling and accel...

Location

Serbia , Belgrade

Salary:

Not provided

Easygo Gaming

Expiration Date

Until further notice

Requirements

Bachelor's/Master's degree in Computer Science or equivalent practical experience
7+ years of hands-on experience in software engineering, focusing on scalable system design and development
Strong experience with Go, and familiarity with building and operating distributed systems, APIs, and shared services
Proven track record of designing and modernising systems with a focus on scalability, maintainability, and system optimisation
Experience contributing to technical direction through collaboration, design input, and mentorship when appropriate
Strong communication skills with the ability to explain technical concepts to a broad audience and work effectively with cross-functional teams
Strong problem-solving skills and the ability to thrive in a fast-paced, dynamic environment
Experience debugging production applications and managing incidents

Job Responsibility

Architect and implement high-performance software solutions in alignment with project requirements and company standards
Design and build shared services and platform capabilities, ensuring high standards of code quality, scalability, and maintainability
Optimise existing services for performance, scalability, and reliability, identifying and resolving bottlenecks, reducing technical debt, and improving system resilience
Take ownership of services throughout their lifecycle while ensuring high code quality, security, and maintainability
Collaborate effectively with cross-functional teams and operational stakeholders, clearly communicating technical concepts, trade-offs, and progress
Work across different problem domains and projects over time, adapting to changing priorities and contributing to improvements of varying complexity based on business needs
Actively contribute as a team player, supporting others when needed, asking questions, and participating constructively in technical discussions and decision-making
Provide technical leadership through solution design, code reviews, and knowledge sharing, supporting the team's overall technical quality and consistency
Communicate effectively in written and spoken English, presenting ideas clearly to colleagues and stakeholders across teams

What we offer

Performance Reward: Annual bonus linked to individual and company performance
Professional Growth: Opportunities for development, learning, and career progression within a global organization
Health & Wellbeing: Private health insurance for you and your dependants
Office Perks: Daily catered lunch, snacks and beverages, parking reimbursement, and a modern Belgrade office
Global Exposure: Opportunities to collaborate with—and occasionally visit—our Melbourne headquarters
Team Culture: Regular team-building activities and a professional, collaborative working environment

Senior Software Engineer, Backend Platform

At Harvey, we’re transforming how legal and professional services operate — not ...

Location

United States , San Francisco

Salary:

200000.00 - 260000.00 USD / Year

Harvey

Expiration Date

Until further notice

Requirements

5+ years of software engineering experience (post-BS/MS), including building scalable backend systems or internal developer platforms
Proficiency in Python (or similar languages) and deep knowledge of backend development fundamentals (APIs, data stores, concurrency, distributed systems)
Hands-on experience with web frameworks and service architectures (e.g. Flask/FastAPI, Bounded context services, microservices) and an understanding of designing clean, versioned APIs
Familiarity with caching, messaging, and database technologies (Redis, Kafka, SQL/NoSQL databases, Vector databases, etc.) and how to use them effectively for high performance and reliability
A track record of writing high-quality, well-tested code and using tools (unit/integration testing, static typing, CI) to catch issues early and ensure reliability
Strong problem-solving skills and a passion for improving developer experience — you enjoy creating tools or frameworks that make other engineers more productive
Excellent collaboration and communication skills, with the ability to work across teams and incorporate feedback

Job Responsibility

Develop and maintain Harvey’s internal backend frameworks and libraries that provide common capabilities (API routing, service lifecycle management, caching and messaging primitives, error handling interfaces, etc.), so product teams don’t have to reinvent them
Create and improve APIs, service templates, and versioned interfaces that establish consistent patterns for building new services and features
Introduce and champion modern backend architecture patterns like asynchronous I/O (asyncio) and streaming data processing, continually evolving our platform for better performance and scalability
Design Harvey-specific abstractions and domain-specific frameworks—covering cross-cutting concerns (e.g., authorization, streaming) and areas like data governance and event processing—to provide product engineers with these capabilities out of the box
Embed reliability and observability into the platform by building in tracing, metrics, and automated tests (shift-left), ensuring services built on our foundation are robust and easy to monitor
Collaborate with Model Infrastructure team to tackle challenges unique to GenAI-native applications — such as supporting high-throughput model inference, managing streaming and long-running API interactions, and designing abstractions for retrieval, context handling, and prompt lifecycle
Collaborate with the Developer Experience and Infrastructure teams (who own CI/CD pipelines, build tools, and release infrastructure) to integrate our platform components seamlessly into the deployment and monitoring ecosystem
Work closely with product engineering teams to gather feedback, evangelize best practices, and make the “paved road” approach a reality — providing strong defaults and clear documentation so teams can move fast with confidence

What we offer

Offers Equity
Offers Bonus
Comprehensive health, dental and vision coverage
retirement benefits (401k match up to 4%)
flexible PTO

Fulltime

Senior Backend Engineer (Go) / Platform

At Paribu, every team member plays a crucial role in driving innovation and deli...

Location

Türkiye , İstanbul

Salary:

Not provided

Paribu

Expiration Date

Until further notice

Requirements

Bachelor's degree in Computer Science, Software Engineering, or a related field
5+ years of experience in software development with a strong focus on Go
Proven experience with Docker and Kubernetes for containerization and orchestration
Strong knowledge of relational databases such as MySQL or PostgreSQL
Proficiency in using Redis for caching and data storage
Experience with cloud platforms, preferably AWS (e.g., S3, ECS, SQS, SNS, Lambda)
Familiarity with CI/CD tools and practices
Excellent problem-solving skills and attention to detail
Strong communication skills and ability to work collaboratively
Skilled in working with microservices architecture and distributed systems

Job Responsibility

Design, develop, and maintain scalable, reliable, and secure applications using Go
Collaborate with cross-functional teams to define, design, and ship new features
Write clear, manageable, and optimized code
Review code and guide junior developers to uphold best practices and coding standards
Troubleshoot and debug applications to optimize performance
Implement and manage CI/CD pipelines for automated testing and deployment
Stay current with industry trends and technologies to ensure our applications are current and competitive
Participate in architectural discussions and decision-making processes to shape the future of our technology stack

What we offer

Meal allowance – Generous support with a flexible meal card
Private health insurance – Comprehensive coverage for employees, including spouse and children
Commuting support – Financial support for commuting based on your office route
S.O.S. leave (10 days) – Additional leave days up to 10 days per year for urgent and unexpected matters, apart from annual leave
Birthday leave – One extra day off during your birthday month
Language learning support – Resources to enhance English communication skills
Personal development support – Budget for exploring hobbies, attending professional courses, and personal growth
Well-being & health platform – Access to digital health and wellness services, including mental health support, and well-being resources
Relocation allowance – Financial support for relocation within a 15-km radius of the Paribu’s office
Top-tier work equipment – High-performance devices and all the essential tools you need to do your best work

Fulltime

Senior Backend Engineer, Inference Platform

Together AI is building the Inference Platform that brings the most advanced gen...

Location

United States , San Francisco

Salary:

160000.00 - 250000.00 USD / Year

Together AI

Expiration Date

Until further notice

Requirements

5+ years of demonstrated experience building large-scale, fault-tolerant, distributed systems and API microservices
Strong background in designing, analyzing, and improving efficiency, scalability, and stability of complex systems
Excellent understanding of low-level OS concepts: multi-threading, memory management, networking, and storage performance
Expert-level programming in one or more of: Rust, Go, Python, or TypeScript
Bachelor’s or Master’s degree in Computer Science, Computer Engineering, or related field, or equivalent practical experience

Job Responsibility

Build and optimize global and local request routing, ensuring low-latency load balancing across data centers and model engine pods
Develop auto-scaling systems to dynamically allocate resources and meet strict SLOs across dozens of data centers
Design systems for multi-tenant traffic shaping, tuning both resource allocation and request handling — including smart rate limiting and regulation — to ensure fairness and consistent experience across all users
Engineer trade-offs between latency and throughput to serve diverse workloads efficiently
Optimize prefix caching to reduce model compute and speed up responses
Collaborate with ML researchers to bring new model architectures into production at scale
Continuously profile and analyze system-level performance to identify bottlenecks and implement optimizations

What we offer

Competitive compensation
equity
health insurance
other competitive benefits

Fulltime

Senior Software Engineer - Backend - Catalog Platform

Whether it’s a sandwich, a burrito, or groceries, the Uber Eats team builds tech...

Location

Denmark , Aarhus

Salary:

Not provided

Uber

Expiration Date

Until further notice

Requirements

5+ years of professional software development experience
Relevant degree (B.Sc, M.Sc, Ph.D) in Computer Science or related technical field or equivalent practical experience
Experience coding with C++, Java, Python, or Go
Enjoy building high quality software that is relied upon by millions of people around the world
Comfortable working with ambiguity in constantly evolving environment
Experience working in large scale distributed systems

Job Responsibility

Design reliable solutions to solve business use cases in a highly distributed system
Implement solutions in Go with a strong focus on clean, readable code with unit and integration test coverage - and run it in production
Actively drive collaboration across multiple teams to create alignment and progress
Take active part in code change peer-reviews to ensure quality and knowledge sharing across the team
Contribute to engineering culture in terms of quality, monitoring and on-call practices
Own part of the team’s charter and through that help setting longer term direction for the team

Fulltime

Senior Software Engineer, Backend - GTPN Platform

Join the Global Treasury and Payment Network (GTPN) team, the core of Airwallex'...

Location

Singapore , Singapore

Salary:

180000.00 - 240000.00 SGD / Year

Airwallex

Expiration Date

Until further notice

Requirements

10+ years working in modern engineering practices focused on continuous innovation and high-quality engineering
Strong role-related expertise and sharp thinking
Experience in system architecturing and software development
Outstanding leadership and motivational abilities
Deep empathy for customer needs
Ability to interpret data to inform decision-making
Collaborative and knowledge-sharing
Adaptable and continuously learning
Proactive and ownership-driven
Efficient and prioritization-savvy

Job Responsibility

Lead the strategy, architecture, development, and operation of Airwallex’s GTPN team
Collaborate with engineers, product managers, and designers to bring finance products from concept to launch
Design and implement solutions that resonate with users
Leverage data to drive decisions, measure product success, and identify optimization opportunities

What we offer

Equity
Medical, dental, and vision insurance (US)
401(k) plan (US)
Short-term and long-term disability (US)
Basic life insurance (US)
Well-being benefits (US)
20 paid days of vacation (US)
12 paid days of company holidays (US)

Fulltime

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