Junior Backend Developer Halmstad · Hybrid — 100%

Effektify; Halmstads kommun; Hybrid; SEK 420,000 - 540,000; Full time

Benefits offered by this job

Collaborative environment

Rapid growth

Modern AI tools

Job summary

Effektify is seeking a Junior Backend Developer to help build and improve the platform that turns marketing, e-commerce, and business data into clearer insights. You’ll work on backend logic, databases, and integrations, with a hands-on role that offers rapid growth.

You will collaborate with the CTO and tech team (primarily based in Halmstad). The role is office-forward, with 2–3 days per week on-site, and flexible days for the rest.

Qualifications

• 0–2 years of experience in system development, backend development, or similar hands-on work.
• A university education in IT, computer science, software engineering, or related field, or equivalent hands-on experience.
• Good foundation in backend development and programming.
• Experience with databases such as PostgreSQL or MySQL.
• Comfortable with APIs, backend logic, and data flows.
• Fluent English, written and spoken.

Responsibilities

• Build and improve backend logic, APIs, and product functionality.
• Work with databases such as PostgreSQL and MySQL.
• Support integrations between ad platforms, analytics tools, e-commerce systems, and financial systems.
• Improve backend structure, performance, and maintainability.
• Collaborate with frontend and product to ship features end-to-end.
• Leverage modern AI tools to move faster and improve quality.

Skills

Backend development

APIs

PostgreSQL

MySQL

English fluency

Education

University IT / computer science / software engineering degree

Tools

PHP / Laravel

AWS

Terraform

Snowflake

Job description

As a Junior Backend Developer at Effektify, you will contribute to developing the backend of a platform that transforms complex data into meaningful insights for marketing, e-commerce, and business clients. Your responsibilities will include enhancing backend logic, managing databases like PostgreSQL and MySQL, and supporting API integrations. A background in backend development and programming is essential, along with a university degree in IT or a related field. Perks of the role include a collaborative environment, opportunities for rapid growth, and the chance to work with modern AI tools in a rapidly evolving company.

Description

Do you enjoy building backend products that make complex data easier to work with? Effektify is now looking for a Junior Backend Developer to help build and improve a platform used to turn marketing, e-commerce, and business data into clearer insights and better decisions.

In this role, you will help build the backend of a product that handles large amounts of connected data from many different sources. A big part of the job is to make sure data flows, backend logic, and technical foundations are stable, clear, and easy to keep building on over time.

You will work with backend development, databases, integrations, and product logic. The role is hands-on and gives you the chance to grow quickly in a real product environment where backend quality matters a lot.

You will work closely withMartin, our CTO, and the rest of the tech team, most of which is based inHalmstad. Since the team is still relatively small, you will get broad exposure, short feedback loops, and a good chance to learn by building together with experienced developers.

What you will work on

Your work will include a mix of:

• Building and improving backend logic, APIs, and product functionality
• Working with databases such asPostgreSQLandMySQL
• Supporting integrations between ad platforms, analytics tools, e-commerce systems, and financial systems
• Helping improve structure, performance, and maintainability on the backend side of the platform
• Working closely with frontend and product to build features end-to-end
• Using modern AI tools in development to move faster, test ideas, and improve implementation quality

Examples of projects and focus areas

In the first phase, your work may include areas such as:

Backend flows for connected data
Help build and improve the backend logic that pulls together data from multiple sources and makes it usable inside the product.

APIs and product logic for new features
Support the development of backend functionality that powers insights, recommendations, and other product features.

Improving backend quality as the platform grows
Contribute to cleaner structure, better performance, and more maintainable systems as the product becomes more advanced and widely used.

Team and setup

A large part of the tech team is based inHalmstad, and for this role that is the preferred location.

We would like you to work from theHalmstad office around 2–3 days per week. The rest can be flexible depending on what makes sense for you and the team.

This is a strong environment if you enjoy working in a smaller team where decision paths are short, people help each other, and good ideas are taken seriously. You will not be expected to know everything from day one, but your curiosity, learning speed, and willingness to take responsibility will matter a lot.

What we are looking for

Required

• 0–2 yearsof experience in system development, backend development, or similar hands-on work
• A university education inIT, computer science, software engineering, or a related field — or another background combined with hands-on experience we consider equivalent
• Good foundation in backend development and programming
• Experience working with databases such asPostgreSQLorMySQL
• Comfortable working with APIs, backend logic, and data flows
• Fluent English, written and spoken

Nice to have

• Experience withPHP / Laravel
• Experience withAWS, cloud environments, or deployment-related work
• Experience withInfrastructure as Code, for exampleTerraform
• Experience withSnowflakeor other data warehouse environments
• Experience from marketing platforms, e-commerce, or other data-heavy products
• Good Swedish, written and spoken

Who are you?

We are looking for a developer who is:

• Prestigeless and easy to work with
• Curious and genuinely interested in learning fast
• Comfortable trying new technologies and better ways of working
• Happy to use modern AI tools as part of daily development
• Driven, responsible, and willing to take ownership earlier than your title might suggest
• Motivated by broad scope and a close connection between product decisions and implementation

More about Effektify

At Effektify, we help companies understand what drives marketing performance and what to do next.

Our platform brings together data from sources such asGoogle, Meta, LinkedIn, TikTok, analytics tools, Shopify, WooCommerce, and financial systems. That creates a product environment with a lot of connected data, many moving parts, and a constant need for backend systems that are stable, clear, and scalable.

For a backend developer, that means working on more than isolated endpoints. You will help shape how data is collected, structured, processed, and used across the platform.

Effektify is a profitable scale-up with50+ employeesand350+ customers. Since 2021, we have grown from a small founding team into a multi-office company with offices inHalmstad (HQ), Gothenburg, Stockholm, Jönköping, and Berlin. We have strong momentum, a working product, and a lot of room to shape what comes next.

• Location:PreferablyHalmstad, with office presence around2–3 days per week