Senior Backend & Platform Engineer Job at PhantomBuster (Bordeaux)

Senior Backend Engineer (Platform and API)

We're looking for a senior backend engineer to join the Channels and Platform te...

Location

Salary:

156500.00 - 202300.00 USD / Year

Buffer

Expiration Date

Until further notice

Requirements

You have practical experience designing, implementing, and maintaining public APIs, plug-in ecosystems, or extensibility platforms
You have deep experience with modern stack — we use Node.js, TypeScript, GraphQL, and MongoDB
You’ve led backend projects from start to finish — shaping architecture, guiding trade-offs, and delivering reliable systems that support real-world product needs
You have strong systems thinking. You look beyond the immediate task, anticipate downstream effects, and help teams converge on architecture that supports the long game
You’ve worked across teams to drive platform or infrastructure improvements — whether simplifying service boundaries, improving observability, or evolving internal tooling
You’ve contributed to collaborative or multi-user product features, and you understand the data, consistency, and UX considerations that come with them
You’re fluent with modern AI tools — not just using them for code generation, but integrating them into how you debug, document, explore ideas, and reduce manual effort
You care about performance, scale, and clean abstractions — and know how to measure, prioritize, and improve them pragmatically
You’ve influenced engineering culture through code reviews, mentoring, or leading by example, and you’re comfortable being a resource for others on architectural decisions
You have a personal stake in the world of content creation

Job Responsibility

Be part of a small, dedicated squad within the Channels and Platform team responsible for Public API development
Lead the development of the backend systems for the Buffer Platform. This includes creating an API for core Buffer features, internal services to ensure Public API stability, availability, high performance, and developer tools for platform clients
Improve and evolve our internal systems — helping consolidate services into a monorepo, improve tooling and observability, and reduce complexity across the board
Collaborate closely with engineers, product, and design to scope work, explore trade-offs, and find the simplest path to something great
Make steady improvements to performance, reliability, and data modeling, helping us scale quality over time
Participate in on-call rotation (all engineers take on a 24/7 week-long shift once a quarter on average) and day-to-day maintenance work required to keep the lights on the systems owned by the team (this includes bug fixing, addressing security vulnerabilities, incident follow-ups, etc.)
Contribute to shaping our engineering culture by sharing knowledge, reviewing code, and leading by example

What we offer

Competitive salary
Work remotely
4-Day workweeks
Health insurance
Home office setup
Growth mindset fund
New laptop
Unlimited free books
AI tools stipend
Flexible time off

Fulltime

Senior Backend Engineer- Data Ingestion - (ClickPipes Platform)

The ClickPipes Platform plays a critical role in driving the growth of our compa...

Location

United States

Salary:

133450.00 - 197200.00 USD / Year

ClickHouse

Expiration Date

Until further notice

Requirements

5+ years of relevant software development industry experience building data-intensive software solutions
Strong knowledge of Golang and experience with its ecosystem
Experience with distributed systems and microservices architecture
The ability to design and build robust ETL data pipelines that can handle large volumes of data reliably and efficiently
Understanding data replication methodologies like CDC
Good knowledge of cloud-native architecture and practical experience with at least one major CSP
You have excellent communication skills and the ability to work well within a team and across engineering teams
You are a strong problem solver and have solid production debugging skills

Job Responsibility

Develop and enhance integrations with various data sources including streaming platforms, databases, data lakes, and object stores
Continuously improve our systems based on operational metrics, customer feedback, and evolving business requirements
Drive technical discussions and contribute to architectural decisions that impact our platform's scalability and resilience
Participate in on-call rotations to ensure system reliability and respond to production incidents

What we offer

Flexible work environment - ClickHouse is a globally distributed company and remote-friendly
Healthcare - Employer contributions towards your healthcare
Equity in the company - Every new team member who joins our company receives stock options
Time off - Flexible time off in the US, generous entitlement in other countries
A $500 Home office setup if you’re a remote employee
Global Gatherings – We believe in the power of in-person connection and offer opportunities to engage with colleagues at company-wide offsites

Fulltime

Senior Software Engineer, Backend (Voice Platform)

At Cresta, the Voice Platform team is on a mission to transform real-time voice ...

Location

Romania , Bucharest

Salary:

Not provided

Cresta

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Computer Science or related field
5+ years of experience in backend system development, distributed systems, or cloud infrastructure
Expertise in Go (or a similar systems language) with strong API and service design skills
Proven experience with scalable architectures using microservices, workflow orchestration, distributed caching, and cloud databases
Strong knowledge of Kubernetes, Docker, and modern cloud infrastructure
Solid understanding of networking, real-time communication protocols, and cloud security best practices
Demonstrated ability to lead complex technical projects from design through production

Job Responsibility

Lead the design and development of scalable, distributed backend microservices in Golang (with some Python for AI-related services)
Own and evolve voice platform integrations with large-scale enterprise communication and contact center systems
Drive initiatives to expand platform capabilities, including bi-directional SIP, WebRTC integrations, multilingual support, advanced transcription, and real-time translation
Build systems that power conversation intelligence for both remote and in-person interactions
Improve observability, reliability, and self-service troubleshooting across the platform
Ensure performance, scalability, and resilience of real-time voice pipelines running in the cloud
Collaborate with cross-functional teams (ML, product, solution architects) to design end-to-end solutions for customer deployments
Provide technical guidance, mentorship, and best practices to other engineers on the team

What we offer

Compensation for this position includes a base salary, equity, and a variety of benefits

Senior Backend Engineer

As a Senior Software Engineer in the Customer Platform team, you’ll own and evol...

Location

Sweden , Stockholm

Salary:

Not provided

Epidemic Sound

Expiration Date

Until further notice

Requirements

5+ years of experience building and maintaining backend systems
Proven experience in at least one backend language, such as Java, Node.js, Kotlin or Go
Strong grasp of distributed systems and system design principles
Experience operating in cloud environments (GCP preferred, AWS also welcome)
Experience working with modern CI/CD pipelines
Willingness to work with Golang as we evolve in that direction
Strong communication skills and ability to collaborate cross-functionally

Job Responsibility

Design, build, and maintain scalable backend services primarily in Golang on Google Cloud Platform (GCP)
Champion technical excellence from system design and architecture through development, deployment, reliability, and security
Collaborate closely with frontend developers to deliver seamless React/Next.js-based interfaces for managing accounts
Partner closely with enterprise, commercial, and product teams to define requirements, prioritize features, and shape the product roadmap
Clearly communicate technical plans, challenges, and solutions to both technical and non-technical stakeholders

Fulltime

Senior TypeScript Backend Engineer - CoreApps Platform

Join the CoreApps Platform team, the foundational engineering group at Groupon r...

Location

Salary:

Not provided

Groupon

Expiration Date

Until further notice

Requirements

6+ years of professional backend software development experience (or 3+ years with proven, exceptional AI-driven impact)
Strong professional experience in building backend systems with TypeScript and Node.js
Mandatory: Proven track record using AI coding tools (e.g., Cursor, GitHub Copilot, Claude Code) to successfully deliver production features and refactor complex, multi-service codebases
Proven experience designing and building high-throughput distributed systems (e.g., handling 100K+ RPM)
Strong understanding of microservices, event-driven architecture (e.g., Kafka), and transactional systems
Proficiency with SQL/NoSQL databases (MySQL/PostgreSQL, MongoDB) and leveraging Kubernetes in a cloud environment (GCP/AWS)

Job Responsibility

Architect and Develop high-throughput, low-latency Core Platform services (e.g., API Gateway, Deal Catalog, User Identity)
Drive Modernization by actively refactoring and migrating critical services from legacy stacks to a modern TypeScript/Node.js microservices architecture
Champion AI-Assisted Development by leveraging AI coding tools (e.g., Copilot, Cursor) to accelerate feature delivery, navigate complex codebases, and mentor team members on best practices
Ensure Operational Excellence for global, production systems, including incident response, system resilience design (circuit breakers, retry logic), and participation in the on-call rotation
Design Distributed Systems that are fault-tolerant, self-healing, and resilient, including sophisticated caching and rate-limiting strategies
Own Complex Commerce Logic for financial systems, order management, and payment processing within the platform

Senior Software Engineer-Platform Backend

We are looking for Senior Engineer Software to be a part of a group with the men...

Location

Israel , Tel Aviv

Salary:

Not provided

Palo Alto Networks

Expiration Date

Until further notice

Requirements

BS in Computer Science, equivalent knowledge or equivalent military experience
4+ years of software engineering experience – Must
Experience in distributed cloud products
Experienced with a variety of database technologies (Mysql / Cassandra / Google BigQuery Amazon Redshift / ElasticSearch)
Experience with writing CI–CD pipelines – advantage
Experience in designing, building and maintaining a scalable server side application
Experience in Go / Python – an advantage
Experience with GCP – advantage
Experience with Kubernetes/Docker – advantage
Knowledge of the cyber field – advantage

Job Responsibility

Responsible for the complete software development life cycle including requirement analysis, design, development, deployment, and support
Drive ideas and initiatives, making innovation a reality
Design and build an infrastructure that supports billions of events per second, storing, processing and making them accessible and visible to the user while collaborating with the industry's leading cyber products

Fulltime

Senior Backend Engineer

BioCatch is the leader in Behavioral Biometrics, a technology that leverages mac...

Location

Israel , TLV

Salary:

Not provided

BioCatch

Expiration Date

Until further notice

Requirements

3–5 years of experience in backend development
Strong hands-on experience with Python
Experience building high-scale, low-latency, robust services deployed across multiple AKS namespaces/regions with different configurations
Experience with at least one major cloud platform (Azure preferred)

Job Responsibility

Design and implement infrastructure for high-volume data processing
Continuously improve performance, cost, and reliability at scale
Collaborate with frontend teams on customer-facing features and applications
Work with stakeholders across the company to ensure data processes meet their requirements
Maintain high engineering standards: testing, observability, clean code, and solid CI/CD practices

Fulltime

Senior LLM Backend Engineer

We are looking for a Senior Backend Engineer with a strong focus on Large Langua...

Location

Spain

Salary:

Not provided

Bark

Expiration Date

Until further notice

Requirements

Extensive production experience with Python in backend engineering
Proven experience integrating LLMs into applications via APIs or SDKs
Strong experience building and maintaining APIs for LLM-based features
Strong experience building and maintaining event-driven workflows
Strong experience building and maintaining business logic that consumes AI outputs
Strong experience building and maintaining integrations with 3rd party AI/ML platforms
Solid SQL and NoSQL experience (especially in AI data pipelines)
Production experience with Docker, ideally with Kubernetes or AWS Fargate/ECS/EKS
Experience deploying and maintaining AI services in cloud environments
Strong organisational skills and ability to deliver in a fast-paced, product-focused environment

Job Responsibility

Work with product managers to understand user needs and translate them into AI-powered functionality
Design and build APIs, services, and workflows that integrate LLMs (both proprietary and open-source)
Implement prompt engineering, RAG pipelines, and model fine-tuning where required
Optimise AI inference performance, scalability, and cost-effectiveness
Ensure AI features meet high standards for security, reliability, and maintainability
Collaborate with other engineers to integrate AI features seamlessly into the wider system
Stay on top of emerging LLM technologies and best practices, running experiments and sharing knowledge across the team

What we offer

Fully remote working
Personal annual L&D Budgets with 600€ to spend on your development
Being at the forefront of an industry with new and exciting problems to solve

Fulltime

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Senior Backend & Platform Engineer

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