Details
| Founded: | 2016 |
|---|---|
| Hourly Rates: | $25 - $49 |
| Employees: | 10 - 49 |
| Avg. Project Cost: | $100,000+ |
| Ratings: |
4.5
7 Reviews
|
Industries Served
About
CoreLine has dedication and expertise to breathe life into your ideas and create compelling digital experiences. CoreLine’s core business is developing mobile apps. They use the newest technologies & best systems to provide efficient solutions on time and on a budget. They are perfectionists and they never stop half.
CoreLine Reviews
Migrated without the outages and rollback drama our first attempt at this produced
Matilda Osborne / Head of Engineering | Jun 09, 2026Five months post-launch, we're running at roughly double the transaction volume we'd specified in the original scope document, and the platform hasn't needed a single structural change to handle it. That's the real tell for whether a team designed for what you told them versus what you were actually going to need. We're now scoping a second phase and I expect this to be a multi-year relationship at this point.
Project summary
Our internal engineering capacity was fully committed to keeping existing systems running, with no room for a build of this size. An outside partner with the right depth was really our only option.
| 4.5 Overall Rating |
| 5.0 Quality |
| 5.0 Schedule |
| 4.0 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | Cloud Services |
|---|---|
| Project Cost: | $10,000 to $49,999 |
| Project Duration: | Oct 2025 - Mar 2026 |
| Business Type: | Gaming & Gambling |
|---|---|
| Location: | Adelaide, Australia |
Questions & Answers
Product teams can finally move independently instead of queuing behind each other
Larissa Nogueira / Chief Digital Officer | May 30, 2026The easiest thing to praise is the technical output itself — solid test coverage, a deployment pipeline that just works, documentation that people actually reference instead of ignoring. But what I keep coming back to is the number of conversations we haven't had to have since launch. No 2am incident calls. No emergency patches. No post-mortems about what went sideways. That absence is really the whole pitch, if you ask me.
Project summary
Our internal engineering capacity was fully committed to keeping existing systems running, with no room for a build of this size. An outside partner with the right depth was really our only option.
| 4.5 Overall Rating |
| 4.5 Quality |
| 5.0 Schedule |
| 4.5 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | DevOps Services |
|---|---|
| Project Cost: | $50,000 to $149,999 |
| Project Duration: | Aug 2025 - Apr 2026 |
| Business Type: | Mining & Metals |
|---|---|
| Location: | Porto Alegre, Brazil |
Questions & Answers
The research surfaced friction points we'd stopped noticing because they'd always been there
Airi Kobayashi / Head of Product Development | May 30, 2026The easiest thing to praise is the technical output itself — solid test coverage, a deployment pipeline that just works, documentation that people actually reference instead of ignoring. But what I keep coming back to is the number of conversations we haven't had to have since launch. No 2am incident calls. No emergency patches. No post-mortems about what went sideways. That absence is really the whole pitch, if you ask me.
Project summary
Our internal engineering capacity was fully committed to keeping existing systems running, with no room for a build of this size. An outside partner with the right depth was really our only option.
| 4.5 Overall Rating |
| 4.5 Quality |
| 4.0 Schedule |
| 4.5 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | UI/UX Design |
|---|---|
| Project Cost: | $10,000 to $49,999 |
| Project Duration: | Sep 2025 - Mar 2026 |
| Business Type: | Events & Event Management |
|---|---|
| Location: | Nagoya, Japan |
Questions & Answers
First time our online and in-store inventory have shown the same numbers
Preston Locke / Director of Technology | May 29, 2026We handed this team an aggressive deadline, a genuinely complicated scope, and a client-side team on our end that was stretched thin and slow to respond at times. They handled all of it without complaint. When they needed something from us they asked precisely and on time. When they didn't, they just kept moving. The project still landed on schedule despite our side being the weaker link for a good chunk of it, which tells you something about how they operate under pressure.
Project summary
Years of incremental patches had left us with a platform that technically worked but was quietly holding the business back strategically. A proper rebuild was the agreed way forward.
| 4.5 Overall Rating |
| 4.5 Quality |
| 5.0 Schedule |
| 5.0 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | E-commerce Development |
|---|---|
| Project Cost: | $150,000 to $499,999 |
| Project Duration: | May 2025 - Mar 2026 |
| Business Type: | Aerospace & Defense |
|---|---|
| Location: | Philadelphia, USA |
Questions & Answers
Headless CMS let our designers and developers finally work in parallel instead of in sequence
Marc-Antoine Girard / VP of Innovation | May 04, 2026I went into this engagement genuinely skeptical. A previous vendor had left us with a system that technically worked but that nobody trusted, and I wasn't interested in repeating that experience. This team earned trust the slow way — solid discovery documentation, technical proposals that held up under scrutiny, sprints that landed when promised, and ultimately a production system that has simply behaved. I don't open conversations about them with caveats anymore.
Project summary
First notice of loss was taking us three days on average against a market benchmark of under four hours. Automating that intake and triage step became the clear priority.
| 4.5 Overall Rating |
| 4.0 Quality |
| 4.0 Schedule |
| 4.0 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | CMS Development |
|---|---|
| Project Cost: | $10,000 to $49,999 |
| Project Duration: | Jun 2025 - Apr 2026 |
| Business Type: | Insurance |
|---|---|
| Location: | Montreal, Canada |
Questions & Answers
Fast, accessible, responsive — every box checked, every deadline hit along the way
Kenji Watanabe / Director of IT Strategy | Apr 18, 2026We handed this team an aggressive deadline, a genuinely complicated scope, and a client-side team on our end that was stretched thin and slow to respond at times. They handled all of it without complaint. When they needed something from us they asked precisely and on time. When they didn't, they just kept moving. The project still landed on schedule despite our side being the weaker link for a good chunk of it, which tells you something about how they operate under pressure.
Project summary
Multi-touch attribution across our media mix was the single most requested capability from clients across our whole portfolio, and we couldn't deliver it without rebuilding the data layer underneath.
| 4.5 Overall Rating |
| 4.5 Quality |
| 5.0 Schedule |
| 4.0 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | Web Development |
|---|---|
| Project Cost: | $500,000+ |
| Project Duration: | May 2025 - Feb 2026 |
| Business Type: | Advertising & Marketing |
|---|---|
| Location: | Yokohama, Japan |
Questions & Answers
Technically sharp, commercially sensible, and genuinely easy to work with throughout
Nicolas Fontaine / Directeur Technique | Mar 14, 2026We handed this team an aggressive deadline, a genuinely complicated scope, and a client-side team on our end that was stretched thin and slow to respond at times. They handled all of it without complaint. When they needed something from us they asked precisely and on time. When they didn't, they just kept moving. The project still landed on schedule despite our side being the weaker link for a good chunk of it, which tells you something about how they operate under pressure.
Project summary
Our client portal hadn't been touched since it launched years earlier, and clients had started comparing it unfavorably to competitors' portals in live pitches.
| 4.5 Overall Rating |
| 4.5 Quality |
| 5.0 Schedule |
| 5.0 Project Cost |
| 5.0 Willing To Refer |
| Project Type: | Low-Code / No-Code Development |
|---|---|
| Project Cost: | $10,000 to $49,999 |
| Project Duration: | Apr 2025 - Jan 2026 |
| Business Type: | Legal Services |
|---|---|
| Location: | Lyon, France |
Questions & Answers
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