CrawlJobs Logo

Lead Back-End Developer

danads.com Logo

DanAds

Location Icon

Location:
Sweden , Malmö

Category Icon

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided

Job Description:

We are at a pivotal moment. You aren't joining to maintain a legacy system; you are joining to re-architect the future of the DanAds platform. DanAds is shifting to a "Platform-First" architecture. We are moving away from monolithic, client-specific codebases to a standardized, API-driven ecosystem. As the Platform Lead Back-End Developer, your mission is to design and build the high-performance, reusable Microservices (Identity, Booking, Reporting, AI) that power our entire product suite. You will act as the "Technical Guardian" of the backend, ensuring that every service we ship is multi-tenant, serverless, and strictly decoupled from the frontend.

Job Responsibility:

  • Enforce the Contract: You are the gatekeeper of the API. You will define and maintain strict OpenAPI specifications
  • Serverless-First: Drive our FinOps strategy by architecting solutions on AWS Serverless (Lambda, API Gateway, DynamoDB, EventBridge) to ensure a "Scale-to-Zero" cost model
  • The Reusability Filter: You will ruthlessly reject "snowflake" logic. If a Product Team asks for a specific feature, your job is to abstract it into a generic capability that serves 10+ clients
  • Data Standards (AdCP): Enforce the Ad Context Protocol (AdCP) across all data models
  • Security & Tenancy: implement strict Logical Isolation patterns
  • Lead by Code: You are a hands-on leader. You write the "Golden Path" templates and libraries that other developers use
  • Review & Refine: Conduct rigorous code reviews to ensure adherence to our NFRs (Non-Functional Requirements) regarding latency (<200ms), availability (99.99%), and observability
  • Bridge the Gap: Translate the CPO's commercial requirements into technical specs

Requirements:

  • Senior Engineering Experience: 7+ years in backend development, with a deep focus on API design and microservices
  • AWS Native: Mastery of the AWS ecosystem, specifically Lambda, DynamoDB, EventBridge, and CloudFormation/Terraform
  • API Design Pro: Extensive experience designing RESTful/GraphQL APIs and treating them as products (Versioning, Documentation, Backward Compatibility)
  • The "Platform Mindset": You understand the difference between building a Project (for one client) and a Platform (for many)
  • AdTech Experience (Bonus): Familiarity with concepts like VAST, OpenRTB, and Campaign workflows is a major plus

Nice to have:

AdTech Experience (Bonus): Familiarity with concepts like VAST, OpenRTB, and Campaign workflows is a major plus

What we offer:
  • Competitive salary
  • Wellness grant and occupational pension
  • A fun and entrepreneurial environment
  • Career growth opportunities
  • Industry leading clients such as Paramount Advertising, Yahoo, Nine Group, Roku and many more

Additional Information:

Job Posted:
January 30, 2026

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 Lead Back-End Developer

Back-End Developer

Start.io is a mobile marketing and audience platform. Start. io empowers the mob...
Location
Location
Salary
Salary:
Not provided
start.io Logo
Start.io
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s degree in Computer Science or equivalent practical experience
  • 2-3 years of professional Java development experience - Must
  • Proven track record in designing and delivering complex distributed systems and microservices (Docker, Kubernetes)
  • Strong understanding of scalability, concurrency, and performance optimization challenges
  • Hands-on experience with CI/CD tools and automated build/deployment pipelines
  • Proficiency in Spring & Spring Boot frameworks
  • Excellent communication skills and the ability to influence technical direction across teams
  • Experience running applications on Kubernetes, with a focus on designing services that scale efficiently and consume resources effectively (rather than cluster administration)
  • Ability to measure and improve application performance using profiling, benchmarking, and APM tools (e.g., JFR, JMeter, Micrometer, New Relic, Datadog)
Job Responsibility
Job Responsibility
  • Design and develop highly scalable, modular backend applications and APIs using Java and Spring Boot
  • Own the full development lifecycle — from requirements analysis, design, coding, and testing to deployment and monitoring in production
  • Lead initiatives to improve system scalability, performance, and security
  • Collaborate closely with Product, Algo, DevOps, BI, and Marketing to deliver integrated, business-driven solutions
  • Ensure observability through robust logging, metrics, and alerting with tools like Prometheus, Grafana, Kibana
  • Drive adoption of engineering best practices, code quality standards, and technical documentation
  • Mentor and guide junior developers, fostering knowledge sharing and continuous improvement
Read More
Arrow Right

Back-End (Cloud) Engineering Manager

Zerto, part of Hewlett Packard Enterprise, powers business continuity for organi...
Location
Location
Israel , Herzliya
Salary
Salary:
Not provided
https://www.hpe.com/ Logo
Hewlett Packard Enterprise
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • BSc. in computer science (or equivalent)
  • at least 2 years of proven experience as a team leader
  • 4+ years of hands-on development experience in C# or Java, focusing on enterprise backend/server-side systems
  • hands-on mentality with a can-do, innovative approach
  • broad knowledge of system architecture patterns and best practices
  • independent research capabilities of new technologies
  • great design and architecture capabilities accompanied by passion for clean code and solid architectures
  • customer-facing and business-oriented approach
  • great soft skills, desire for mentoring and training people, and excellent inbound and outbound communication skills
  • strong capabilities in performance tuning and troubleshooting of large-scale systems
Job Responsibility
Job Responsibility
  • Manage an agile/scrum team, with full managerial responsibility for the entire employee lifecycle (hiring, mentoring, performance, etc.)
  • perform code and design reviews, maintaining high engineering standards within the team
  • collaborate with other teams to share ideas and lead cross-team development initiatives
  • analyze business requirements and architect scalable, high performing, testable solutions
  • become a domain expert within Zerto for the AWS and Azure public clouds and serve as a focal point for current and future developments on that platform
  • lead research activities and POCs
  • collaborate and work with global development teams
  • collaborate with our partners in Amazon and Microsoft in order to set our future-plans, share roadmaps and visions
  • develop enterprise backend systems and serverless architecture components using C# in .NET core
  • drive end-to-end delivery of projects
What we offer
What we offer
  • Health & Wellbeing: comprehensive suite of benefits that support physical, financial and emotional wellbeing
  • personal & professional development: tailored programs to help you achieve career goals
  • unconditional inclusion: inclusive workplace celebrating individual uniqueness
  • flexibility to manage work and personal needs
  • Fulltime
Read More
Arrow Right

Staff Software Engineer, Back-end

Affirm is reinventing credit to make it more honest and friendly, giving consume...
Location
Location
Spain
Salary
Salary:
101000.00 - 131000.00 EUR / Year
affirm.com Logo
Affirm
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 8+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin
  • Extensive track record of developing highly available distributed systems using technologies like AWS, MySQL, Spark and Kubernetes
  • Strong verbal and written communication skills that support effective collaboration with our global engineering team
  • Experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan
  • Write high quality code that is easily understood and used by others
  • On-Call Rotation
Job Responsibility
Job Responsibility
  • Set technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects
  • Collaborate across teams in the product development lifecycle by collaborating with product management, design & analytics to ensure technical sustainability, risks and trade-offs are well understood and managed
  • Act as a force-multiplier for your team through your definition and advocacy of technical solutions and operational processes
  • Take ownership of your team’s operations and availability by ensuring you have the right monitoring, triage rotations, playbooks, polcities, testing and alerting in place to support “keep the lights on” & on-call efforts
  • Foster a culture of quality and ownership on your team by setting code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks
  • Help develop talent on your team by providing feedback and guidance, and leading by example
What we offer
What we offer
  • Flexible Spending Wallets for tech, food and lifestyle
  • Away Days - wellness days to take off work and recharge
  • Learning & Development programs
  • Parental benefit
  • Employee Resource & Community Groups
  • Health care coverage - Affirm covers all premiums for all levels of coverage for you and your dependents
  • Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
  • Time off - competitive vacation and holiday schedules allowing you to take time off to rest and recharge
  • ESPP - An employee stock purchase plan enabling you to buy shares of Affirm at a discount
  • Visa sponsorship
  • Fulltime
Read More
Arrow Right

Tech Lead

Our client, a leading Entertainment group, is looking for a strong Tech Lead to ...
Location
Location
United Kingdom , London
Salary
Salary:
85000.00 GBP / Year
blu-digital.co.uk Logo
Blu Digital
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Experience leading and working with Product teams
  • Been in a decision-making role
  • Experience across both front and back-end development
  • Strong technical skills
  • Able to work in an Agile environment
  • Experience of developing large-scale web applications would be a massive bonus
Job Responsibility
Job Responsibility
  • Lead on product development
  • Ensure that developers deliver each high-reach project
  • Fulltime
Read More
Arrow Right

Lead Developer

Are you looking for an exciting new role? Are you looking to make the next steps...
Location
Location
United Kingdom , Sheffield
Salary
Salary:
60000.00 GBP / Year
blu-digital.co.uk Logo
Blu Digital
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Track record of building high-performance products
  • Strong technical skills
  • Good understanding of software development and delivery practices
  • Experience with SaaS-based products on cloud platforms
  • Experience with API integrations with external systems
  • Experience with automated unit and integration testing tools and frameworks such as PHPUnit and PHPStan
  • Experience with full-stack development with PHP and Laravel
  • Line management experience
  • Ability to implement front-end framework and libraries
  • Ability to implement UI/UX designs
Job Responsibility
Job Responsibility
  • Responsible for the overall architecture and development of the platform, including front-end and back-end components
  • Supporting the growth of the development team
  • Develop Software for the front-end web experience and back-end system using Laravel PHP
  • Taking an existing platform and building in-house capabilities for development & infrastructure
  • Providing new development and maintenance fixes for the system
  • Driving and evolving the architecture of the existing platform
  • Ensuring high-quality and integrated automated testing
  • Integrating toolsets to assist with the development process such as CI/CD
  • Supporting the skills growth development of team members
  • Fulltime
Read More
Arrow Right

Applications Development Technology Lead Analyst

The Applications Development Technology Lead Analyst is a senior level position ...
Location
Location
India , Pune
Salary
Salary:
Not provided
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 6-10 years of relevant experience in Apps Development or systems analysis role
  • Extensive experience system analysis and in programming of software applications
  • Experience in managing and implementing successful projects
  • Subject Matter Expert (SME) in at least one area of Applications Development
  • Ability to adjust priorities quickly as circumstances dictate
  • Demonstrated leadership and project management skills
  • Consistently demonstrates clear and concise written and verbal communication
  • Expertise in Agile Software methodology using JIRA
  • Relevant experience in preparing Software design artifacts including Architecture, flowcharts and Sequence diagrams
  • 5+ years of expertise in application design and development using the below mentioned technologies and frameworks: Back-end: Spring, Spring boot, Java 11+ , Hibernate , Design patterns: Microservices , Docker , Kubernetes, etc.
Job Responsibility
Job Responsibility
  • Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements
  • Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
  • Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
  • Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
  • Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
  • Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
  • Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary
  • Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency
  • Fulltime
Read More
Arrow Right

Senior Back-end WordPress/PHP Developer

Teal Media is looking for a Senior Backend Developer who's a thoughtful problem-...
Location
Location
United States
Salary
Salary:
115000.00 - 135000.00 USD / Year
Teal Media
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Strong back-end expertise
  • Experience with WordPress back-end development (themes, plugins, systems integrations)
  • Ability to write clean, well-structured, and well-documented code
  • Experience ensuring site performance, security, accessibility, and scalability
  • Experience with site maintenance, updates, and feature enhancements
  • Experience with QA and testing
  • Experience with deployment workflows, version control, staging environments, CI/CD
  • Ability to collaborate closely with designers, strategists, and front-end developers
  • Ability to lead technical work and mentor other developers
Job Responsibility
Job Responsibility
  • Lead technical implementation of custom web projects
  • Act as lead developer on new builds and ongoing support work
  • Write clean, well-structured, and well-documented code
  • Ensure sites are fast, secure, accessible, and scalable
  • Handle site maintenance, updates, and feature enhancements
  • Own QA and testing
  • Support deployment workflows
  • Collaborate with designers and front-end developers
  • Partner with project teams and clients to scope solutions
  • Join internal and client-facing meetings
What we offer
What we offer
  • Comprehensive benefits package
  • Generous PTO
  • Flexible, people-first workplace
  • Fulltime
Read More
Arrow Right

Lead Java Developer

The Applications Development Technology Lead Analyst is a senior level position ...
Location
Location
Canada , Mississauga
Salary
Salary:
120800.00 - 170800.00 USD / Year
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Strong-level proficiency in React.js: Demonstrated experience building complex, dynamic, and performant user interfaces. Deep understanding of React ecosystem, state management (e.g., Redux, Context API), and component lifecycle
  • Strong proficiency in Node.js: Experience designing and implementing scalable RESTful APIs and microservices
  • Strong proficiency in Java and Spring Boot: Proven experience in building enterprise-grade back-end applications and services
  • Proven experience in designing and building complex dynamic rendering frameworks/systems. Understanding of server-side rendering (SSR), client-side rendering (CSR), and hydration techniques
  • Solid understanding and hands-on experience with Microservices Architecture and best practices
  • Proficient in Hibernate, JPA and working with both relational (Oracle) and NoSQL(MongoDB) databases
  • Experience with Redis or equivalent for caching and performance optimization
  • Proven experience with Test-Driven Development (TDD) and Shift-Left testing strategies
  • Hands-on experience with test automation tools/frameworks such as Junit, Mockito, REST Assured, Cucumber or Selenium
  • Strong understanding of application performance, monitoring and optimization techniques
Job Responsibility
Job Responsibility
  • Design and development of complex systems using Spring, Spring Boot and Spring Cloud, React/Angular, Workflow technologies
  • Architect and implement microservices-based solutions with focus on scalability, reliability and performance
  • Apply TDD and test-first development practices across all development stages
  • Collaborate with cross-functional teams to define, design and deliver new features
  • Guide the integration and optimization of Oracle and MongoDB in high-performance environments
  • Implement data access layers using Hibernate and JPA and manage caching using Redis or other caching frameworks
  • Ensure high quality through effective code reviews, static code analysis and performance optimization
  • Mentor and guide junior developers and contribute to a culture of continuous improvement
  • Stay up-to-date with emerging technologies and industry trends, advocating for their adoption where appropriate
  • Fulltime
Read More
Arrow Right